Research Topics
| Suresh ValiyaveettilSummaryAffiliation: National University of Singapore Country: Singapore Publications
| Collaborators
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Detail Information
Publications
Anti-proliferative activity of silver nanoparticlesP V AshaRani
Department of Chemistry, Faculty of Science, 3 Science Drive 3, National University of Singapore, 117543 Singapore
BMC Cell Biol 10:65. 2009..No safety regulations are in practice for the use of these nanomaterials. The interactions of nanomaterials with cells, uptake mechanisms, distribution, excretion, toxicological endpoints and mechanism of action remain unanswered...
Active targeting of cancer cells using folic acid-conjugated platinum nanoparticlesYiwei Teow
Department of Chemistry, National University of Singapore NUS, 3 Science Drive 3, 117543, Singapore
Nanoscale 2:2607-13. 2010..Such toxicity, combined with the possibility to incorporate functional organic molecules as capping agents, can be used for developing new drug candidates...- Biomimetic metal oxides for the extraction of nanoparticles from waterRamakrishna Mallampati
Materials Research Laboratory, Department of Chemistry, National University of Singapore, Science Drive 3, Singapore 117543
Nanoscale 5:3395-9. 2013..Easy access and enhanced stability of metal oxides makes them interesting candidates for applications in industrial effluent treatments and water purifications... - Differential regulation of intracellular factors mediating cell cycle, DNA repair and inflammation following exposure to silver nanoparticles in human cellsPv Asharani
Department of Chemistry, Faculty of Science, 3 Science Drive 3, National University of Singapore, 117543, Singapore
Genome Integr 3:2. 2012..abstract:.. 
Fabrication of nanostructure on a polymer film using atomic force microscopeSubbiah Jegadesan
Department of Chemistry, 3 Science Drive 3, National University of Singapore, Singapore
J Nanosci Nanotechnol 7:2172-5. 2007..The nanostructure of size 28 nm was created using the biased AFM tip on the PMAA film coated on Si(100) substrate and found that this method is a direct and reliable method to produce uniform nanostructures on a polymer film...- Amphiphilic poly(p-phenylene)-driven multiscale assembly of fullerenes to nanowhiskersMuhammad Hanafiah Nurmawati
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
ACS Nano 2:1429-36. 2008..The formation of whiskers with high aspect ratio and investigation of interesting photophysical properties are discussed. An amphiphilic PPP was used as a template for preparing nanohybrids of C(60) at ambient temperature and conditions... - Multicolored carbon nanotubes: decorating patterned carbon nanotube microstructures with quantum dotsXiaodai Lim
Department of Physics, BLK S12, Faculty of Science, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore
ACS Nano 2:1389-95. 2008..As a result, multicolored/multicomponents hybrid functional materials were achieved... - Easy writing of nanopatterns on a polymer film using electrostatic nanolithographySubbiah Jegadesan
Department of Chemistry, NUS Nanoscience and Nanotechnology Initiative, National University of Singapore, 3 Science Drive 3, 117543, Singapore
Small 2:481-4. 2006 - In vitro study of magnesium-calcite biomineralization in the skeletal materials of the seastar Pisaster giganteusSubramanyam Gayathri
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
Chemistry 13:3262-8. 2007.... - Structure, self-assembly, and dual role of a beta-defensin-like peptide from the Chinese soft-shelled turtle eggshell matrixRajamani Lakshminarayanan
Department of Chemistry, Faculty of Science, 3 Science Drive 3, National University of Singapore, Singapore 117543
J Am Chem Soc 130:4660-8. 2008..The results demonstrate the adaptability of an extracellular matrix protein to perform multiple tasks: polymorph discrimination and protection of the contents of the egg against bacterial invasion... - Simple and efficient biomimetic synthesis of Mn3O4 hierarchical structures and their application in water treatmentRamakrishna Mallampati
Department of Chemistry, National University of Singapore, 117543, Singapore
J Nanosci Nanotechnol 12:618-22. 2012..The prepared Mn3O4 showed good ability to remove organic pollutants from water and expected to be useful in effluent treatment in textile industry... - Health impact and safety of engineered nanomaterialsYiwei Teow
Department of Chemistry, National University of Singapore NUS, 3 Science Drive 3, 117543, Singapore
Chem Commun (Camb) 47:7025-38. 2011..This review focus on the possible biological impact of engineered NPs, serving as a reminder that nanomaterials can become a double-edged sword if not properly handled... - Comparison of the toxicity of silver, gold and platinum nanoparticles in developing zebrafish embryosP V AshaRani
Department of Chemistry, National University of Singapore, Singapore
Nanotoxicology 5:43-54. 2011..The toxic effects exhibited by the zebrafish embryos as a consequence of nanoparticle exposure, accompanied by the accumulation of metals inside the body calls for urgent further investigations in this field... - Fabrication and characterization of hybrid nanofibers from poly(vinyl alcohol), milk protein and metal carbonatesNarahari Mahanta
Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
J Nanosci Nanotechnol 12:6156-62. 2012..The cytocompatibility and increase in cell adhesion property of the hybrid nanofiber may provide significant advantages for such materials in biomedical applications... - Biophysical characterization of anticoagulant hemextin AB complex from the venom of snake Hemachatus haemachatusYajnavalka Banerjee
Department of Biological Sciences, Faculty of Science, and Department of Chemistry, National University of Singapore, Singapore
Biophys J 93:3963-76. 2007..The two dimers formed under each of these conditions display distinct differences in their apparent molecular diameters and anticoagulant properties. Based on these results, we have proposed a model for this unique anticoagulant complex... - Carbon nanofibers extracted from soot as a sorbent for the determination of aromatic amines from wastewater effluent samplesSajini Vadukumpully
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
J Chromatogr A 1218:3581-7. 2011..The proposed microextraction method offers advantages such as easy operation, high recovery, fast extraction, minimal use of organic solvent and elimination of tedious solvent evaporation and reconstitution steps... - Surface modified electrospun poly(vinyl alcohol) membranes for extracting nanoparticles from waterNarahari Mahanta
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore
Nanoscale 3:4625-31. 2011..Our results highlight that functionalized nanofibers have high extraction efficiency for dissolved nanoparticles in water and can be used for removal of the nanocontaminants from the aqueous environment... - DNA damage and p53-mediated growth arrest in human cells treated with platinum nanoparticlesP V AshaRani
Department of Chemistry, Faculty of Science, 3 Science Drive 3, National University of Singapore, Singapore
Nanomedicine (Lond) 5:51-64. 2010..This study investigates the uptake and bioactivity (e.g., cytotoxicity, genotoxicity and protein expression) of platinum nanoparticles (Pt-NPs, approximately 5-8 nm in size) in human cells... - Size selective assembly of colloidal particles on a template by directed self-assembly techniqueBinni Varghese
Department of Physics, Faculty of Science, National University of Singapore, 2 Science Drive 3, Singapore
Langmuir 22:8248-52. 2006..This concept has been extended to the size selective sorting of colloidal particles. The capability of this technique for sorting and organizing colloidal particles of a particular diameter from a mixture of microspheres is demonstrated... - Functionalization of surfactant wrapped graphene nanosheets with alkylazides for enhanced dispersibilitySajini Vadukumpully
Department of Chemistry, National University of Singapore NUS, 3 Science Drive 3, 117543, Singapore
Nanoscale 3:303-8. 2011..Our results open the possibility to control the functionalization on graphene in the construction of composite nanomaterials... - Surface-structured gold-nanotube mats: fabrication, characterization, and application in surface-enhanced Raman scatteringShahitha Jahir Hussain Fathima
Department of Chemistry, NUS Nanoscience and Nanotechnology Initiative, National University of Singapore, 3 Science Drive 3, 117543 Singapore
Small 6:2443-7. 2010..Well-defined spectral peaks are obtainable at concentrations as low as 10(-7) M of CV, which did not give spectral signals at this low concentration on its own... - Toxicity of silver nanoparticles in zebrafish modelsP V AshaRani
Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, 117543, Singapore
Nanotechnology 19:255102. 2008..Furthermore, the acridine orange staining showed an increased apoptosis in Ag-np treated embryos. These results suggest that silver nanoparticles induce a dose-dependent toxicity in embryos, which hinders normal development... - Formation of transient amorphous calcium carbonate precursor in quail eggshell mineralization: an in vitro studyRajamani Lakshminarayanan
Department of Chemistry, NUS-Nanoscience and Nanotechnology Initiative, and Department of Biological Sciences, National University of Singapore, Singapore, 3 Science Drive 3, Singapore 117543
Biomacromolecules 7:3202-9. 2006..Altogether, these observations further demonstrate that this strategy may be common in both vertebrate and invertebrate mineralized structures... - Synthesis of perylene dyes with multiple triphenylamine substituentsAshok Keerthi
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
Chemistry 18:11669-76. 2012..Corresponding anhydrides of PMIs were used for fabrication of dye-sensitized solar cells. The molecule with four triphenylamine units on perylene monoanhydride showed the highest power conversion efficiency... - Regioisomers of perylenediimide: synthesis, photophysical, and electrochemical propertiesAshok Keerthi
Department of Chemistry, National University of Singapore, Singapore
J Phys Chem B 116:4603-14. 2012..Comparison of properties of a series of 1,6- or 1,7-substituted PDIs showed significant differences. Such regiomerically pure compounds can offer certain advantages in applications, which are currently being investigated... - Synthesis and properties of symmetric and unsymmetric dibenzothienopyrrolesGanapathy Balaji
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117 546
Org Lett 11:3358-61. 2009..The crystal structure, photophysical and electrochemical properties of symmetrical and unsymmetrical heteroacenes are described... - Synthesis and characterization of unsymmetric indolodithienopyrrole and extended diindolodithienopyrroleGanapathy Balaji
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117 543
Org Lett 12:232-5. 2010..Solid-state structures were examined using single-crystal X-ray diffraction to understand their packing behavior. The optical and electrochemical properties of these new heteroacenes are also described in detail... - Low band gap thiophene-perylene diimide systems with tunable charge transport propertiesGanapathy Balaji
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
Org Lett 13:18-21. 2011..8 × 10(-7) cm(2) V(-1) s(-1). This suggests that charge transport properties can be tuned by simply varying the architecture of pentathiophene units... - Cytotoxicity and genotoxicity of silver nanoparticles in human cellsP V AshaRani
Department of Chemistry, Faculty of Science, National University of Singapore, Singapore 117543, Singapore 117597
ACS Nano 3:279-90. 2009..The higher sensitivity of U251 cells and their arrest in G(2)/M phase could be explored further for evaluating the potential use of Ag-np in cancer therapy...