Martin Pumera

Summary

Affiliation: Nanyang Technological University
Country: Singapore

Publications

  1. doi request reprint Nanotoxicology: the molecular science point of view
    Martin Pumera
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Chem Asian J 6:340-8. 2011
  2. ncbi request reprint Marangoni self-propelled capsules in a maze: pollutants 'sense and act' in complex channel environments
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Lab Chip 14:2818-23. 2014
  3. ncbi request reprint Magnetic control of electrochemical processes at electrode surface using iron-rich graphene materials with dual functionality
    Chee Shan Lim
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 6:7391-6. 2014
  4. ncbi request reprint Electrochemical tuning of oxygen-containing groups on graphene oxides: towards control of the performance for the analysis of biomarkers
    Chee Shan Lim
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 637371, Singapore
    Phys Chem Chem Phys 16:12178-82. 2014
  5. pmc Artificial micro-cinderella based on self-propelled micromagnets for the active separation of paramagnetic particles
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
    Chem Commun (Camb) 49:5147-9. 2013
  6. pmc Poisoning of bubble propelled catalytic micromotors: the chemical environment matters
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 5:2909-14. 2013
  7. doi request reprint Towards electrochemical purification of chemically reduced graphene oxide from redox accessible impurities
    Shu Min Tan
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Phys Chem Chem Phys 16:7058-65. 2014
  8. doi request reprint Detection of biomarkers with graphene nanoplatelets and nanoribbons
    Chee Shan Lim
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Analyst 139:1072-80. 2014
  9. doi request reprint Towards biocompatible nano/microscale machines: self-propelled catalytic nanomotors not exhibiting acute toxicity
    Elaine Lay Khim Chng
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 6:2119-24. 2014
  10. doi request reprint Cytotoxicity of halogenated graphenes
    Wei Zhe Teo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Nanoscale 6:1173-80. 2014

Collaborators

  • Richard D Webster
  • Hong Wang
  • Samuel Sanchez
  • Lu Wang
  • Petr Simek
  • Nam Trung Nguyen
  • Michal Otyepka
  • Radek Zboril
  • Adriano Ambrosi
  • Guanjia Zhao
  • Chun Kiang Chua
  • Zdeněk Sofer
  • Alessandra Bonanni
  • Hwee Ling Poh
  • Adeline Huiling Loo
  • Elaine Lay Khim Chng
  • Marcella Giovanni
  • Bahareh Khezri
  • Chee Shan Lim
  • Shu Min Tan
  • Alex Yong Sheng Eng
  • Colin Hong An Wong
  • Filip Saněk
  • Madeline Shuhua Goh
  • Sze Yin Chee
  • Emma J E Stuart
  • James Guo Sheng Moo
  • Oliver G Schmidt
  • Rou Jun Toh
  • Wei Zhe Teo
  • Stanislava Matějková
  • Miroslav Maryško
  • Gwendeline K S Wong
  • Jiri Kosina
  • Marlitt Viehrig
  • Jeffrey S Cross
  • Tzu Hui Seah

Detail Information

Publications95

  1. doi request reprint Nanotoxicology: the molecular science point of view
    Martin Pumera
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Chem Asian J 6:340-8. 2011
    ..This Focus Review discusses the current state of nanotoxicity research and nanotoxicology from the point of view of molecular science...
  2. ncbi request reprint Marangoni self-propelled capsules in a maze: pollutants 'sense and act' in complex channel environments
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Lab Chip 14:2818-23. 2014
    ..These devices are foreseen to have real-world environmental applications in the near future. ..
  3. ncbi request reprint Magnetic control of electrochemical processes at electrode surface using iron-rich graphene materials with dual functionality
    Chee Shan Lim
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 6:7391-6. 2014
    ..The feasibility of this magnetically switchable method for on-demand sensing and energy production thus brings about potential developments for future electrochemical applications. ..
  4. ncbi request reprint Electrochemical tuning of oxygen-containing groups on graphene oxides: towards control of the performance for the analysis of biomarkers
    Chee Shan Lim
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore 637371, Singapore
    Phys Chem Chem Phys 16:12178-82. 2014
    ..We demonstrate that each biomarker requires different optimal conditions which can be easily matched by varying the electrochemical pre-treatment of the sensing GO film. ..
  5. pmc Artificial micro-cinderella based on self-propelled micromagnets for the active separation of paramagnetic particles
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
    Chem Commun (Camb) 49:5147-9. 2013
    ..In this work, we will show that ferromagnetic microjets can pick-up paramagnetic beads while not showing any interaction with diamagnetic silica microparticles for the active separation of microparticles in solution...
  6. pmc Poisoning of bubble propelled catalytic micromotors: the chemical environment matters
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 5:2909-14. 2013
    ..We believe that our findings will contribute significantly to this field to develop alternative systems or catalysts for self-propulsion when practical applications in the real environment are considered...
  7. doi request reprint Towards electrochemical purification of chemically reduced graphene oxide from redox accessible impurities
    Shu Min Tan
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Phys Chem Chem Phys 16:7058-65. 2014
    ....
  8. doi request reprint Detection of biomarkers with graphene nanoplatelets and nanoribbons
    Chee Shan Lim
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Analyst 139:1072-80. 2014
    ..The ENP surface displayed a better sensitivity for guanine, whereas the oxidation of adenine was more sensitive on the ENR surface. ..
  9. doi request reprint Towards biocompatible nano/microscale machines: self-propelled catalytic nanomotors not exhibiting acute toxicity
    Elaine Lay Khim Chng
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 6:2119-24. 2014
    ..This is strongly indicative of the benign nature of our nanojets, which is of paramount significance as it is the first step towards the applications of nano/micromotors in real-world practical medical devices. ..
  10. doi request reprint Cytotoxicity of halogenated graphenes
    Wei Zhe Teo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Nanoscale 6:1173-80. 2014
    ..More studies need to be carried out in the future to complement the results obtained in this initial study in an attempt to develop a better understanding of the health hazards that the halogenated graphenes pose. ..
  11. ncbi request reprint Blood electrolytes exhibit a strong influence on the mobility of artificial catalytic microengines
    Hong Wang
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Phys Chem Chem Phys 15:17277-80. 2013
    ..A strategy to counterbalance this negative influence is suggested. These findings have a strong influence in the field of bubble-propelled artificial micromotors, where applications in blood are often envisioned. ..
  12. doi request reprint Prolonged exposure of graphite oxide to soft X-ray irradiation during XPS measurements leads to alterations of the chemical composition
    Chun Kiang Chua
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Analyst 138:7012-5. 2013
    ..Proper and careful consideration on the time span of XPS analysis of graphite oxide is, thus, highly advocated. ..
  13. doi request reprint Chemical reduction of graphene oxide: a synthetic chemistry viewpoint
    Chun Kiang Chua
    Nanyang Technological University Chemistry and Biological, Chemistry, Singapore 637371, Singapore
    Chem Soc Rev 43:291-312. 2014
    ..This review will serve as a valuable platform to understand the efficiency of these reducing agents for the reduction of graphene oxide. ..
  14. doi request reprint The CVD graphene transfer procedure introduces metallic impurities which alter the graphene electrochemical properties
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 6:472-6. 2014
    ..The presence of these metallic impurities within the transferred graphene film affects tremendously its electrochemical behavior when adopted as an electrode material. ..
  15. doi request reprint Corrosion of self-propelled catalytic microengines
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chem Commun (Camb) 49:9125-7. 2013
    ..Here we show that rolled-up and electroplated catalytic microjet engines undergo dramatic corrosion in fuel solution. ..
  16. doi request reprint Reynolds numbers influence the directionality of self-propelled microjet engines in the 10(-4) regime
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 5:7277-83. 2013
    ..We show that such dependence of trajectories of microjets on Re is a general issue. This observation has a strong implication for the real-world applications of microjets. ..
  17. doi request reprint Graphane and hydrogenated graphene
    Martin Pumera
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
    Chem Soc Rev 42:5987-95. 2013
    ..The special cases of patterning of hydrogenated graphene strips in a graphene lattice are discussed. ..
  18. doi request reprint Graphenes prepared from multi-walled carbon nanotubes and stacked graphene nanofibers for detection of 2,4,6-trinitrotoluene (TNT) in seawater
    Shu Min Tan
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Analyst 138:1700-4. 2013
    ..We demonstrate that it is of high importance to study different sources and methods of preparation of graphenes for analytical chemistry applications...
  19. ncbi request reprint Graphene, carbon nanotubes and nanoparticles in cell metabolism
    Martin Pumera
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    Curr Drug Metab 13:251-6. 2012
    ..First, the introduction to the materials science of graphene, carbon nanotubes and metallic nanoparticles is given. Second, different mechanisms of participation of these materials on the cell metabolism are discussed and elucidated...
  20. ncbi request reprint Metal-based impurities in graphenes: application for electroanalysis
    Sze Yin Chee
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Analyst 137:2039-41. 2012
    ..This opens doors for turning metallic impurities into potentially useful components of graphene based electrochemical systems...
  21. ncbi request reprint Voltammetry of carbon nanotubes and graphenes: excitement, disappointment, and reality
    Martin Pumera
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 Singapore
    Chem Rec 12:201-13. 2012
    ..Here, I provide a personal view of these developments and some "reality checks" for the electrochemistry of these nanomaterials. DOI 10.1002/tcr.201100027...
  22. ncbi request reprint Nanomaterials meet microfluidics
    Martin Pumera
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Chem Commun (Camb) 47:5671-80. 2011
    ..In our opinion, the "marriage" of nanomaterials and microfluidics is highly beneficial and is expected to solve vital challenges in related fields...
  23. doi request reprint Electrochemically powered self-propelled electrophoretic nanosubmarines
    Martin Pumera
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    Nanoscale 2:1643-9. 2010
    ..This minireview focuses on a discussion of the fundamentals of the electrophoretic mechanism underlying the propulsion of this sort of nanosub, as well as a demonstration of the proof-of-concept capabilities of nanosubmarines...
  24. doi request reprint Graphene-based nanomaterials and their electrochemistry
    Martin Pumera
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
    Chem Soc Rev 39:4146-57. 2010
    ..Inherent electrochemistry and spectroelectrochemistry of graphene nanomaterials is discussed thoroughly. Important application in sensing and energy storage areas are highlighted...
  25. doi request reprint Noble metal (Pd, Ru, Rh, Pt, Au, Ag) doped graphene hybrids for electrocatalysis
    Marcella Giovanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
    Nanoscale 4:5002-8. 2012
    ..Research in the field of energy storage and production, electrochemical sensing and biosensing as well as biomedical devices can take advantage of the properties and catalytic capabilities of the metal doped graphene hybrids...
  26. doi request reprint Inherently electroactive graphene oxide nanoplatelets as labels for single nucleotide polymorphism detection
    Alessandra Bonanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    ACS Nano 6:8546-51. 2012
    ..We believe that our findings are very important to open a new route in the use of graphene oxide in electrochemistry...
  27. doi request reprint Chemically-modified graphenes for oxidation of DNA bases: analytical parameters
    Madeline Shuhua Goh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    Analyst 136:4738-44. 2011
    ..The findings in this report will provide a useful guide for the future development of label-free electrochemical devices for DNA analysis...
  28. doi request reprint Sulfur-doped graphene via thermal exfoliation of graphite oxide in H2S, SO2, or CS2 gas
    Hwee Ling Poh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    ACS Nano 7:5262-72. 2013
    ..Resulting sulfur-doped graphenes act as metal-free electrocatalysts for an oxygen reduction reaction. ..
  29. doi request reprint Searching for magnetism in hydrogenated graphene: using highly hydrogenated graphene prepared via Birch reduction of graphite oxides
    Alex Yong Sheng Eng
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    ACS Nano 7:5930-9. 2013
    ..The origin of the magnetism is also determined to arise from the hydrogenated graphene itself, and not as a result of any metallic impurities. ..
  30. pmc Chemically reduced graphene contains inherent metallic impurities present in parent natural and synthetic graphite
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    Proc Natl Acad Sci U S A 109:12899-904. 2012
    ..Our findings have important implications on the whole field of graphene research...
  31. doi request reprint Inherently electroactive graphene oxide nanoplatelets as labels for specific protein-target recognition
    Adeline Huiling Loo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 5:7844-8. 2013
    ..Therefore, it is expected that inherently electroactive graphene oxide nanoplatelet labels will play a similar role as electroactive gold nanoparticle labels which were developed more than a decade ago. ..
  32. doi request reprint Thrombin aptasensing with inherently electroactive graphene oxide nanoplatelets as labels
    Adeline Huiling Loo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
    Nanoscale 5:4758-62. 2013
    ..Therefore, the inherently electroactive graphene oxide nanoplatelets are a material which can serve as an electroactive label, in a manner similar to metallic nanoparticles...
  33. doi request reprint Nucleic acid functionalized graphene for biosensing
    Alessandra Bonanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 18:1668-73. 2012
    ..In addition, covalent functionalization of graphene with ssDNA is expected to have broad implications, from biosensing to nanoelectronics and directed, DNA programmable, self-assembly...
  34. ncbi request reprint Blood proteins strongly reduce the mobility of artificial self-propelled micromotors
    Hong Wang
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore, Fax 65 6791 1961
    Chemistry 19:16756-9. 2013
    ..These findings have serious implications for the biomedical applications of catalytic microjets. ..
  35. doi request reprint Self-propelled nanojets via template electrodeposition
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 5:1319-24. 2013
    ..This highly parallel method which is of low-cost and requires the usage of low-end equipment that can be easily located in any laboratory opens up the doors for world-wide nanojet fabrication in the near future...
  36. doi request reprint Impedimetric immunoglobulin G immunosensor based on chemically modified graphenes
    Adeline Huiling Loo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
    Nanoscale 4:921-5. 2012
    ..3 μg ml(-1) to 7 μg ml(-1). Finally, the fabricated immunosensor also displays selectivity for IgG...
  37. doi request reprint Thermally reduced graphenes exhibiting a close relationship to amorphous carbon
    Colin Hong An Wong
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
    Nanoscale 4:4972-7. 2012
    ....
  38. doi request reprint Nanoporous carbon materials for electrochemical sensing
    Hwee Ling Poh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chem Asian J 7:412-6. 2012
    ..Nanoporous carbon exhibits a superior electrochemical performance for sensing of important biomarkers such as dopamine, ascorbic acid, uric acid, NADH, DNA bases, and forensic-related compounds such as nitroaromatic explosives...
  39. doi request reprint An insight into the hybridization mechanism of hairpin DNA physically immobilized on chemically modified graphenes
    Adeline Huiling Loo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Analyst 138:467-71. 2013
    ..In addition, these findings also have a profound impact on the understanding of both the interactions between DNA and graphene platforms and the DNA recognition event on graphene platforms for the construction of biosensors...
  40. doi request reprint High-pressure hydrogenation of graphene: towards graphane
    Hwee Ling Poh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 4:7006-11. 2012
    ..Sheet and specific resistance of the graphene and hydrogenated graphene were measured. This scalable synthesis method has great potential to serve as a pathway towards the mass production of graphane...
  41. doi request reprint Electrochemistry of folded graphene edges
    Adriano Ambrosi
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Nanoscale 3:2256-60. 2011
    ..As folded edges are the product of thermal treatment of multilayer graphene, such thermal procedures should be avoided when fabricating graphene for electrochemical applications...
  42. doi request reprint Unusual inherent electrochemistry of graphene oxides prepared using permanganate oxidants
    Alex Yong Sheng Eng
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 Singapore, Fax 65 6791 1961
    Chemistry 19:12673-83. 2013
    ..Our findings are of extreme importance for the electrochemistry community as they reveal that electrode materials undergo cyclic changes in charge/discharge cycles, which has strong implications for energy-storage and sensing devices...
  43. doi request reprint Unscrolling of multi-walled carbon nanotubes: towards micrometre-scale graphene oxide sheets
    Colin Hong An Wong
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
    Phys Chem Chem Phys 15:7755-9. 2013
    ..This difference is suggested to arise from the type of nanotube used, such as the Russian Doll form or Scroll form causing a change in the initial oxidation site location and ultimately leading to an alternate nanotube opening process...
  44. ncbi request reprint Metallic impurities in graphenes prepared from graphite can dramatically influence their properties
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore Singapore
    Angew Chem Int Ed Engl 51:500-3. 2012
    ..These impurities may dominate their properties and can have a negative influence on their potential applications...
  45. doi request reprint Detection of DNA hybridization on chemically modified graphene platforms
    Marcella Giovanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    Analyst 137:580-3. 2012
    ..We believe that our findings may present a foundation for further research and development in graphene-based impedimetric biosensing...
  46. doi request reprint Influence of parent graphite particle size on the electrochemistry of thermally reduced graphene oxide
    Sze Yin Chee
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Phys Chem Chem Phys 14:12794-9. 2012
    ..Our findings will have profound influence upon practical fabrication of graphene for applications in sensing and energy storage devices...
  47. doi request reprint Number of graphene layers exhibiting an influence on oxidation of DNA bases: analytical parameters
    Madeline Shuhua Goh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore
    Anal Chim Acta 711:29-31. 2012
    ..We use glassy carbon electrode as substrate coated with graphenes. Our findings shall have profound influence on construction of graphene based genosensors...
  48. ncbi request reprint Impurities within carbon nanotubes govern the electrochemical oxidation of substituted hydrazines
    Emma J E Stuart
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    Phys Chem Chem Phys 13:10818-22. 2011
    ..Our findings have strong implications on the electrochemical sensing of hydrazines and on the use of hydrazines as fuels for nanomotors...
  49. ncbi request reprint Capacitance of p- and n-doped graphenes is dominated by structural defects regardless of the dopant type
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 Singapore, Fax 65 6791 1961
    ChemSusChem 7:1102-6. 2014
    ....
  50. doi request reprint Influence of real-world environments on the motion of catalytic bubble-propelled micromotors
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Lab Chip 13:2937-41. 2013
    ....
  51. doi request reprint Graphene oxide nanoribbons from the oxidative opening of carbon nanotubes retain electrochemically active metallic impurities
    Colin Hong An Wong
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 Singapore
    Angew Chem Int Ed Engl 52:8685-8. 2013
    ..The CNTs contain significant amounts of metallic impurities even after purification. These impurities persist after oxidative opening of the CNTS to GONRs and heavily influence the electrochemical behavior of the resulting material. ..
  52. ncbi request reprint Graphenes prepared by Staudenmaier, Hofmann and Hummers methods with consequent thermal exfoliation exhibit very different electrochemical properties
    Hwee Ling Poh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371Singapore
    Nanoscale 4:3515-22. 2012
    ..This clearly shows that the methods of preparations have dramatic influences on the materials properties and, thus, such findings are of eminent importance for practical applications as well as for academic research...
  53. ncbi request reprint Oxidation debris in graphene oxide is responsible for its inherent electroactivity
    Alessandra Bonanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    ACS Nano 8:4197-204. 2014
    ....
  54. doi request reprint Nanographite impurities in carbon nanotubes: their influence on the oxidation of insulin, nitric oxide, and extracellular thiols
    Elaine Lay Khim Chng
    Division of Chmistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 18:1401-7. 2012
    ..Our findings will have a profound influence upon the biomedical applications of CNTs...
  55. doi request reprint Reynolds numbers exhibit dramatic influence on directionality of movement of self-propelled systems
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    Phys Chem Chem Phys 14:6456-8. 2012
    ..Our findings have strong implication on the motion controllability and predictability of these independent self-propelled systems...
  56. ncbi request reprint Biomimetic artificial inorganic enzyme-free self-propelled microfish robot for selective detection of Pb(2+) in water
    James Guo Sheng Moo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Fax 65 6791 1961
    Chemistry 20:4292-6. 2014
    ..It is a first step towards replacing the biological toxicity assays with biomimetic inorganic autonomous robotic systems. ..
  57. doi request reprint Highly hydrogenated graphene through microwave exfoliation of graphite oxide in hydrogen plasma: towards electrochemical applications
    Alex Yong Sheng Eng
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 Singapore, Fax 65 6791 1961
    Chemistry 19:15583-92. 2013
    ..The highly hydrogenated graphenes exhibit fast heterogeneous electron-transfer rates, suggestive of their suitability for electrochemical applications in electrodes, supercapacitors, batteries, and sensors. ..
  58. doi request reprint Detection of silver nanoparticles on a lab-on-chip platform
    Chun Kiang Chua
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    Electrophoresis 34:2007-10. 2013
    ..In this work, the detection of AgNPs via electrochemical oxidation has been achieved on a "Lab-on-chip" platform. This platform provides a fast, convenient, and portable detection system for the detection of AgNPs in common water. ..
  59. doi request reprint Carcinogenic organic residual compounds readsorbed on thermally reduced graphene materials are released at low temperature
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 Singapore, Fax 65 6791 1961
    Chemistry 19:14446-50. 2013
    ....
  60. doi request reprint Boron-doped graphene and boron-doped diamond electrodes: detection of biomarkers and resistance to fouling
    Shu Min Tan
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Analyst 138:4885-91. 2013
    ..These findings show that boron-doped sp(2) graphene and sp(3) diamond behave, in many aspects, dramatically differently and this shall have a profound influence upon their applicability as electrochemical materials. ..
  61. doi request reprint Micromotors with built-in compasses
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    Chem Commun (Camb) 48:10090-2. 2012
    ....
  62. doi request reprint Electrochemistry at chemically modified graphenes
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
    Chemistry 17:10763-70. 2011
    ..Our findings have a profound impact for the applications of chemically modified graphenes in electrochemical devices...
  63. doi request reprint Biorecognition on graphene: physical, covalent, and affinity immobilization methods exhibiting dramatic differences
    Adeline Huiling Loo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chem Asian J 8:198-203. 2013
    ..Hence, it is believed that our findings are very important in order to optimize and improve the performance of graphene-based aptasensors...
  64. doi request reprint Transition metal (Mn, Fe, Co, Ni)-doped graphene hybrids for electrocatalysis
    Rou Jun Toh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
    Chem Asian J 8:1295-300. 2013
    ..Moreover, nickel-doped graphene hybrids displayed outstanding electrocatalytic activities towards reduction of O2 when compared to bare graphenes. These findings may be exploited in the research field of renewable energy...
  65. doi request reprint Purification of carbon nanotubes by high temperature chlorine gas treatment
    Elaine Lay Khim Chng
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Phys Chem Chem Phys 15:5615-9. 2013
    ..Therefore it is suggested that the Cl2 treatment of carbon nanotubes is a highly promising route towards the production of pure CNTs...
  66. doi request reprint Large-scale quantification of CVD graphene surface coverage
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 5:2379-87. 2013
    ....
  67. doi request reprint The inherent electrochemistry of nickel/nickel-oxide nanoparticles
    Marcella Giovanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore
    Chem Asian J 7:702-6. 2012
    ..Therefore, methods to rapidly quantify the amount of Ni and NiO nanoparticles are of widespread potential use...
  68. doi request reprint Redox-active nickel in carbon nanotubes and its direct determination
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 18:3338-44. 2012
    ..Metallic Ni impurities play an extremely active role in toxicological assays as well as in undesired catalytic processes, and thus a method to rapidly quantify the amount of redox-active Ni is of great importance...
  69. doi request reprint Beyond platinum: bubble-propelled micromotors based on Ag and MnO2 catalysts
    Hong Wang
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    J Am Chem Soc 136:2719-22. 2014
    ..1% of H2O2. These catalysts should enable unparalleled widespread use of such motors in real applications, as it will be possible to make them in large quantities at low cost. ..
  70. ncbi request reprint Rational design of carboxyl groups perpendicularly attached to a graphene sheet: a platform for enhanced biosensing applications
    Alessandra Bonanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore, Fax 65 6791 1961
    Chemistry 20:217-22. 2014
    ..Such reactive carboxyl groups grafted perpendicularly on GO holds promise for a highly efficient tailored biofunctionalization for applications in biosensing or drug delivery. ..
  71. doi request reprint Direct determination of bioavailable molybdenum in carbon nanotubes
    Marcella Giovanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 17:1806-10. 2011
    ..This method will be indispensable for future toxicological studies of CNTs...
  72. doi request reprint Challenges of the movement of catalytic micromotors in blood
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Lab Chip 13:1930-6. 2013
    ....
  73. doi request reprint Carbonaceous impurities in carbon nanotubes are responsible for accelerated electrochemistry of cytochrome c
    Lu Wang
    Division of Chemistry and Biological Chemistry, School of Physical, Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Anal Chem 85:6195-7. 2013
    ..We will show here that the observed electrocatalytic effect toward this probe could be mainly attributed to the carbonaceous impurities present within the carbon nanotubes samples, instead of the carbon nanotubes themselves...
  74. doi request reprint Impedimetric thrombin aptasensor based on chemically modified graphenes
    Adeline Huiling Loo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Nanoscale 4:143-7. 2012
    ..Lastly, the aptasensor was found to demonstrate selectivity for thrombin. Such simply fabricated graphene oxide aptasensor shows high promise for clinical diagnosis of biomarkers and point-of-care analysis...
  75. doi request reprint Graphene platform for hairpin-DNA-based impedimetric genosensing
    Alessandra Bonanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    ACS Nano 5:2356-61. 2011
    ..We investigate the influence of various graphene platforms consisting of different numbers of same-sized graphene layers. We believe that our findings are an important step toward highly sensitive and selective sensing architectures...
  76. ncbi request reprint Introducing dichlorocarbene in graphene
    Chun Kiang Chua
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Chem Commun (Camb) 48:5376-8. 2012
    ..The obtained material was fully characterized using high resolution X-ray photoelectron spectroscopy, transmission electron microscopy, infrared and Raman spectroscopies...
  77. doi request reprint Halogenation of graphene with chlorine, bromine, or iodine by exfoliation in a halogen atmosphere
    Hwee Ling Poh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 19:2655-62. 2013
    ..The halogen atoms that have successfully been attached to the graphene surfaces will serve as basic building blocks for further graphene nanoarchitectonics...
  78. ncbi request reprint Bioavailability of metallic impurities in carbon nanotubes is greatly enhanced by ultrasonication
    Rou Jun Toh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 18:11593-6. 2012
    ..These findings will have profound impact on the processing of CNTs as well as on nanotoxicity studies...
  79. doi request reprint Graphite oxides: effects of permanganate and chlorate oxidants on the oxygen composition
    Chun Kiang Chua
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Science, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
    Chemistry 18:13453-9. 2012
    ..These observations indicated large disparities between the GOs obtained from different oxidation methods. Such insights would provide fundamental knowledge for fine tuning GO for future applications...
  80. doi request reprint Graphene sheet orientation of parent material exhibits dramatic influence on graphene properties
    Chun Kiang Chua
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Science, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
    Chem Asian J 7:2367-72. 2012
    ..Our findings have shown that the orientation of the graphene sheets in starting materials has a dramatic influence on their chemical, material, and electrochemical properties...
  81. ncbi request reprint On oxygen-containing groups in chemically modified graphenes
    Alessandra Bonanni
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore, Fax 65 6791 1961
    Chemistry 18:4541-8. 2012
    ..Our findings are very important to clearly identify the presence, nature, and distribution of oxygen functionalities on different chemically modified graphenes...
  82. ncbi request reprint Inherent electrochemistry and activation of chemically modified graphenes for electrochemical applications
    James Guo Sheng Moo
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore
    Chem Asian J 7:759-70. 2012
    ..These findings will have far-reaching consequences for the evaluation of different CMGs as electrode materials in electrochemical devices...
  83. doi request reprint Could carbonaceous impurities in reduced graphenes be responsible for some of their extraordinary electrocatalytic activities?
    Lu Wang
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chem Asian J 8:1200-4. 2013
    ..Herein, we show that the claimed electrocatalytic activities of these materials for the oxidation of NADH, acetaminophen, and hydroquinone are mainly due to the presence of carbonaceous impurities...
  84. doi request reprint Magnetotactic artificial self-propelled nanojets
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore
    Langmuir 29:7411-5. 2013
    ..This behavior is similar to that of the magnetotactic bacteria. The ability to sense the magnetic field is expected to have a strong impact on future applications of autonomous self-propelled nanojets...
  85. doi request reprint The toxicity of graphene oxides: dependence on the oxidative methods used
    Elaine Lay Khim Chng
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 19:8227-35. 2013
    ....
  86. doi request reprint Covalent chemistry on graphene
    Chun Kiang Chua
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
    Chem Soc Rev 42:3222-33. 2013
    ..We focus on the reactions of the graphene sp(2) backbone, such as nucleophilic addition, cycloaddition, free radical additions, substitutions and rearrangements...
  87. doi request reprint Precise tuning of surface composition and electron-transfer properties of graphene oxide films through electroreduction
    Adriano Ambrosi
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chemistry 19:4748-53. 2013
    ....
  88. doi request reprint Selective removal of hydroxyl groups from graphene oxide
    Chun Kiang Chua
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Science, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore
    Chemistry 19:2005-11. 2013
    ..Moreover, the selective defunctionalisation of hydroxyl groups could potentially allow for the tailoring of graphene properties for various applications...
  89. doi request reprint Graphene-based electrochemical sensor for detection of 2,4,6-trinitrotoluene (TNT) in seawater: the comparison of single-, few-, and multilayer graphene nanoribbons and graphite microparticles
    Madeline Shuhua Goh
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
    Anal Bioanal Chem 399:127-31. 2011
    ..We established the limit of detection of TNT in untreated seawater at 1 μg/mL...
  90. ncbi request reprint Liquid-liquid interface motion of a capsule motor powered by the interlayer Marangoni effect
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371 Singapore
    J Phys Chem B 116:10960-3. 2012
    ..Intrinsic and environment factors influencing the motion were investigated. It is also possible for the velocity, direction, and start/stop of the motion of the capsule to be manipulated...
  91. doi request reprint Macroscopic self-propelled objects
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Chem Asian J 7:1994-2002. 2012
    ....
  92. ncbi request reprint Friedel-Crafts acylation on graphene
    Chun Kiang Chua
    School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore
    Chem Asian J 7:1009-12. 2012
    ..The success of the Friedel-Crafts reaction provides an important expansion of the synthetic "toolbox" for future modifications of graphene towards the specific needs of different applications...
  93. doi request reprint External-energy-independent polymer capsule motors and their cooperative behaviors
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    Chemistry 17:12020-6. 2011
    ..We believe that a plethora of applications can be envisioned with this motor, such as cargo delivery, manipulation of matter, sensing and detection, biorecognition, and environmental remediation...
  94. ncbi request reprint Enhanced diffusion of pollutants by self-propulsion
    Guanjia Zhao
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
    Phys Chem Chem Phys 13:12755-7. 2011
    ..Here we demonstrate the paradigm-changing concept that pollutants can propagate themselves with a rate that is greater than the rate for standard molecular diffusion by five orders of magnitude...
  95. doi request reprint Signal transducers and enzyme cofactors are susceptible to oxidation by nanographite impurities in carbon nanotube materials
    Emma J E Stuart
    Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
    Chemistry 17:5544-8. 2011
    ..Our findings are of high importance for both industrial and biomedical applications...