Martin Kalbac

Summary

Affiliation: Academy of Sciences of the Czech Republic
Country: Czech Republic

Publications

  1. ncbi request reprint The intermediate frequency modes of single- and double-walled carbon nanotubes: a Raman spectroscopic and in situ Raman spectroelectrochemical study
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech Republic
    Chemistry 12:4451-7. 2006
  2. ncbi request reprint The change of the state of an endohedral fullerene by encapsulation into SWCNT: a Raman spectroelectrochemical study of Dy3N@C80 peapods
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, v v i Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech Republic
    Chemistry 13:8811-7. 2007
  3. doi request reprint Development of the tangential mode in the Raman spectra of SWCNT bundles during electrochemical charging
    M Kalbac
    J Heyrovsky Institute of Physical Chemistry, vvi, Academy of Sciences of the Czech Republic, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    Nano Lett 8:1257-64. 2008
  4. doi request reprint Tuning of sorted double-walled carbon nanotubes by electrochemical charging
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, vvi, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    ACS Nano 4:459-69. 2010
  5. doi request reprint Doping of C60 fullerene peapods with lithium vapor: Raman spectroscopic and spectroelectrochemical studies
    Martin Kalbac
    Leibniz Institute of Solid State and Materials Research, Group of Electrochemistry and Conducting Polymers, Helmholtzstr 20, 01069 Dresden, Germany
    Chemistry 14:6231-6. 2008
  6. doi request reprint Addressing asymmetry of the charge and strain in a two-dimensional fullerene peapod
    V Vales
    J Heyrovsky Institute of Physical Chemistry, CAS, v v i, Dolejskova 3, 182 23 Praha, Czech Republic
    Nanoscale 8:735-40. 2016
  7. pmc Mass-related inversion symmetry breaking and phonon self-energy renormalization in isotopically labeled AB-stacked bilayer graphene
    Paulo T Araujo
    Department of Electrical Engineering and Computer Science, MIT, Cambridge, Massachusetts 02139, USA
    Sci Rep 3:2061. 2013
  8. doi request reprint Effects of heat treatment on Raman spectra of two-layer 12C/13C graphene
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
    Chemistry 18:13877-84. 2012
  9. doi request reprint Sexithiophene encapsulated in a single-walled carbon nanotube: an in situ Raman spectroelectrochemical study of a peapod structure
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry v v i, Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech Republic
    Chemistry 16:11753-9. 2010
  10. doi request reprint Probing charge transfer between shells of double-walled carbon nanotubes sorted by outer-wall electronic type
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
    Chemistry 17:9806-15. 2011

Collaborators

Detail Information

Publications29

  1. ncbi request reprint The intermediate frequency modes of single- and double-walled carbon nanotubes: a Raman spectroscopic and in situ Raman spectroelectrochemical study
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech Republic
    Chemistry 12:4451-7. 2006
    ..The dependence of IFM on electrochemical charging was also studied. In situ spectroelectrochemical data provide a means to distinguish the bands of the outer and inner tubes...
  2. ncbi request reprint The change of the state of an endohedral fullerene by encapsulation into SWCNT: a Raman spectroelectrochemical study of Dy3N@C80 peapods
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, v v i Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech Republic
    Chemistry 13:8811-7. 2007
    ..The results support the assignment of Raman bands to the Dy3N@C80 moiety inside a SWCNT...
  3. doi request reprint Development of the tangential mode in the Raman spectra of SWCNT bundles during electrochemical charging
    M Kalbac
    J Heyrovsky Institute of Physical Chemistry, vvi, Academy of Sciences of the Czech Republic, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    Nano Lett 8:1257-64. 2008
    ..The TO mode of metallic tubes has been identified only at a doping level corresponding to 1.0 V or above. Our results also indicate an asymmetry in the behavior of the TG mode for positive electrode potentials relative to negative ones...
  4. doi request reprint Tuning of sorted double-walled carbon nanotubes by electrochemical charging
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, vvi, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    ACS Nano 4:459-69. 2010
    ..A low doping level corresponds to a high efficiency of the charge-transfer, while a high doping level shows low charge-transfer efficiency...
  5. doi request reprint Doping of C60 fullerene peapods with lithium vapor: Raman spectroscopic and spectroelectrochemical studies
    Martin Kalbac
    Leibniz Institute of Solid State and Materials Research, Group of Electrochemistry and Conducting Polymers, Helmholtzstr 20, 01069 Dresden, Germany
    Chemistry 14:6231-6. 2008
    ..The TG band of the lithium-doped peapods did not undergo an upshift during the anodic doping, which points to the formation of a stable exohedral metallofullerene peapod...
  6. doi request reprint Addressing asymmetry of the charge and strain in a two-dimensional fullerene peapod
    V Vales
    J Heyrovsky Institute of Physical Chemistry, CAS, v v i, Dolejskova 3, 182 23 Praha, Czech Republic
    Nanoscale 8:735-40. 2016
    ..The local changes in the strain and doping were correlated with local roughness revealing asymmetry in the strain and doping with respect to the top and bottom graphene layers of the peapod. ..
  7. pmc Mass-related inversion symmetry breaking and phonon self-energy renormalization in isotopically labeled AB-stacked bilayer graphene
    Paulo T Araujo
    Department of Electrical Engineering and Computer Science, MIT, Cambridge, Massachusetts 02139, USA
    Sci Rep 3:2061. 2013
    ..These different charge distributions are reflected and demonstrated by different phonon self-energy renormalizations of the G modes for AB-2LG and for t-2LG. ..
  8. doi request reprint Effects of heat treatment on Raman spectra of two-layer 12C/13C graphene
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
    Chemistry 18:13877-84. 2012
    ..The top graphene layer is proposed to be more relaxed than the bottom graphene layer and thus reflects almost exclusively the temperature variations as a freestanding graphene layer would...
  9. doi request reprint Sexithiophene encapsulated in a single-walled carbon nanotube: an in situ Raman spectroelectrochemical study of a peapod structure
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry v v i, Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8, Czech Republic
    Chemistry 16:11753-9. 2010
    ..It is shown that the interaction of SWCNT with 6T also changes the electronic structure of SWCNT in its charged state. This change of electronic structure is demonstrated both for semiconducting and metallic tubes...
  10. doi request reprint Probing charge transfer between shells of double-walled carbon nanotubes sorted by outer-wall electronic type
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
    Chemistry 17:9806-15. 2011
    ..The potential needed to observe the effects of charge transfer between the inner and outer tubes is found to increase in the following order: M@M < S@M < M@S < S@S...
  11. doi request reprint Raman spectroscopy and in situ Raman spectroelectrochemistry of bilayer ¹²C/¹³C graphene
    Martin Kalbac
    J Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v v i, Dolejškova 3, CZ 18223 Prague 8, Czech Republic
    Nano Lett 11:1957-63. 2011
    ..Nevertheless, analysis of the intensity of the Raman modes showed an anomalous bleaching of the Raman intensity of the G mode with increasing electrode potential, which was not observed previously in one-layer graphene...
  12. doi request reprint The influence of strong electron and hole doping on the Raman intensity of chemical vapor-deposition graphene
    Martin Kalbac
    J Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v v i, Dolejškova 3, CZ 18223 Prague 8, Czech Republic
    ACS Nano 4:6055-63. 2010
    ..Furthermore, the observed increase of the Raman intensity of the G mode is found to be a function of laser excitation energy...
  13. doi request reprint Electrochemical charging of individual single-walled carbon nanotubes
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v v i, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    ACS Nano 3:2320-8. 2009
    ..Furthermore, for the metallic tube, a strong asymmetry is found in the bleaching of the Raman signal with respect to positive and negative potentials, which results from the different energy bandwidth for the pi* band and the pi band...
  14. ncbi request reprint In situ Raman spectroelectrochemical study of 13C-labeled fullerene peapods and carbon nanotubes
    Martin Kalbac
    Leibniz Institute of Solid State and Materials Research, Group of Electrochemistry and Conducting Polymers, Helmholtzstr 20, 01069 Dresden, Germany
    Small 3:1746-52. 2007
    ..In addition, the spectroelectrochemical behavior of the G mode of inner tubes in 13C(i)-DWCNTs is followed from the start of the electrochemical doping, which was not feasible for (Nat)C(i)-DWCNTs...
  15. doi request reprint Competition between the spring force constant and the phonon energy renormalization in electrochemically doped semiconducting single-walled carbon nanotubes
    M Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v v i, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    Nano Lett 8:3532-7. 2008
    ..Positive charging always causes an upshift of the TG mode frequency. However, the magnitude of the upshift is dependent on the tube diameter...
  16. doi request reprint Selective etching of thin single-walled carbon nanotubes
    Martin Kalbac
    Leibniz Institute of Solid State and Materials Research, Group of Electrochemistry and Conducting Polymers, Helmholtzstrasse 20, D 01069 Dresden, Germany
    J Am Chem Soc 131:4529-34. 2009
    ..This is a further confirmation of the removal of the small-diameter tubes...
  17. doi request reprint Decomposition of Fluorinated Graphene under Heat Treatment
    Jan Plsek
    Department of Low Dimensional Systems, J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v v i, Dolejskova 3, 18223, Prague 8, Czech Republic
    Chemistry 22:8990-7. 2016
    ..However, fluorine removal from graphene was not complete, as some fraction of strongly bonded fluorine can persist despite heating to 1000 K. The role of intercalated H2 O and OH species in the defluorination process is emphasised. ..
  18. ncbi request reprint Electrochemical doping of chirality-resolved carbon nanotubes
    Ladislav Kavan
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, CZ 182 23 Prague 8, Czech Republic
    J Phys Chem B 109:19613-9. 2005
    ..A suggested interpretation follows from the charging-induced structural changes of SWCNTs bundles, which also includes a partial de-bundling of tube ropes...
  19. ncbi request reprint In situ Raman spectroelectrochemistry as a tool for the differentiation of inner tubes of double-wall carbon nanotubes and thin single-wall carbon nanotubes
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, v v i Academy of Sciences of the Czech Republic, Dolejskova 3, CZ 182 23 Prague 8, Czech Republic
    Anal Chem 79:9074-81. 2007
    ..The significance of the proposed method is demonstrated on a commercial DWCNT sample...
  20. doi request reprint Tuning the reactivity of graphene by surface phase orientation
    Jan Plsek
    J Heyrovsky Institute of Physical Chemistry, Dolejskova 3, 18223, Prague, Czech Republic
    Chemistry . 2016
    ..The results are consistent with the variation of the mechanical strain of graphene on the different faces of copper. In contrast, no obvious correlation of the graphene reactivity with the doping induced by different facets was found...
  21. doi request reprint Covalent Reactions on Chemical Vapor Deposition Grown Graphene Studied by Surface-Enhanced Raman Spectroscopy
    Petr Kovaříček
    Department of Low Dimensional Systems, J Heyrovsky Institute of Physical Chemistry of the ASCR, v v i, Dolejskova 2155 3, 182 23, Prague, Czech Republic
    Chemistry 22:5404-8. 2016
    ..These deliverables provide a toolbox for reactivity of fluorinated graphene under mild reaction conditions, providing structural freedom of the species to-be-grafted to the single-layer graphene. ..
  22. doi request reprint Single Layer Molybdenum Disulfide under Direct Out-of-Plane Compression: Low-Stress Band-Gap Engineering
    Miriam Peña-Álvarez
    J Heyrovsky Institute of Physical Chemistry of the AS CR, v v i, Dolejskova 2155 3, 182 23 Prague 8, Czech Republic
    Nano Lett 15:3139-46. 2015
    ..5 GPa, and the transition to a semimetal occurs at stress smaller than 3 GPa. ..
  23. pmc Graphene wrinkling induced by monodisperse nanoparticles: facile control and quantification
    Jana Vejpravova
    Institute of Physics CAS, v v i, Department of Magnetic Nanosystems, Na Slovance 2, 18221 Prague 2, Czech Republic
    Sci Rep 5:15061. 2015
    ..Our study thus offers universal approach for both fine tuning and facile quantification of the graphene topography up to ~60% of wrinkling. ..
  24. doi request reprint Raman spectroscopy and in situ Raman spectroelectrochemistry of isotopically engineered graphene systems
    Otakar Frank
    J Heyrovsky Institute of Physical Chemistry of the Academy of Sciences of the Czech Republic, v v i, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    Acc Chem Res 48:111-8. 2015
    ....
  25. doi request reprint Doping of C70 fullerene peapods with lithium vapor: Raman spectroscopic and Raman spectroelectrochemical studies
    Martin Kalbac
    Leibniz Institute of Solid State and Materials Research, Group of Electrochemistry and Conducting Polymers, Helmholtzstr 20, D 01069 Dresden, Germany J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, CZ 18223 Prague 8, Czech Republic
    Nanotechnology 25:485706. 2014
    ..The TG band of the Li doped peapods is partly upshifted during the anodic doping, which points to the different state of C70@SWCNTs and C60@SWCNTs studied previously. ..
  26. doi request reprint FUNCTIONALIZATION OF HYDROGENATED CHEMICAL VAPOUR DEPOSITION-GROWN GRAPHENE: THE ON-SURFACE CHEMICAL REACTIONS
    Karolina Drogowska
    J Heyrovsky Institute of Physical Chemistry, Dolejskova 3, 18223, Prague, Czech Republic
    Chemistry . 2016
    ....
  27. doi request reprint Selective and Scalable Chemical Removal of Thin Single-Walled Carbon Nanotubes from their Mixtures with Double-Walled Carbon Nanotubes
    Zuzana Komínková
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague 8 Czech Republic
    Chemistry 21:16147-53. 2015
    ..The results are evaluated by Raman spectroscopy and in situ Raman spectroelectrochemistry. It is shown that the amount of SWCNTs was reduced by about 35 % after lithium vapor treatment of the studied SWCNTs-DWCNTs mixture. ..
  28. doi request reprint Fluorination of isotopically labeled turbostratic and Bernal stacked bilayer graphene
    Johan Ek Weis
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v v i Dolejskova 3, 18223 Prague 8 Czech Republic
    Chemistry 21:1081-7. 2015
    ..The fluorination changes the electronic structure similarly for the top and bottom layers in turbostratic bilayers. However, the top layer is more sensitive than the bottom layer in AB-stacked bilayers...
  29. doi request reprint Ion-irradiation-induced defects in isotopically-labeled two layered graphene: enhanced in-situ annealing of the damage
    Martin Kalbac
    J Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v v i, Dolejskova 3, Prague 8, Czech Republic
    Adv Mater 25:1004-9. 2013
    ..This observation is explained by in situ self-annealing of the defects...