Fuctionalization of single-walled carbon nanotubes with organo-lithium compounds: A combined XPS, STM, and AFM study

Beitrag in einem Sammelwerk
(Originalarbeit)


Details zur Publikation

Autor(en): Graupner R, Abraham J, Vencelová A, Lauffer P, Ley L, Hirsch A
Titel Sammelwerk: Electronic Properties of Novel Nanostructures
Verlag: American Institute of Physics
Jahr der Veröffentlichung: 2005
Titel der Reihe: AIP Conf. Proc.
Band: 786
Seitenbereich: 248-251
ISSN: 0094-243X


Abstract


A covalent sidewall functionalization of Single-Walled Carbon Nanotubes (SWCNTs) has been achieved by a reaction with butyllithium in benzene. The nucleophilic attack of the lithium organyl leads to a transfer of nagative charge to the SWCNTs which is balanced by the positive charge of the Li-ions. In our investigation we were able to verify the negative charge on the SWCNTs by a concomitant shift of the binding energy of the C 1s core levels of the SWCNTs in X-ray induced photoelectron spectroscopy (XPS). Moreover, scanning tunneling microscopy (STM) reveals a decoration of the tubewalls by features which exhibit the expected threefold symmetry of the butyl-groups. The charging of the SWCNTs in solution could also be verified by applying a homogeneous electric field using Au coated glass electrodes. The electrodes were chraracterized by XPS and atomic force microscopy (AFM). These measurements reveal the appearance of Li on one electrode, and the occurance of SWCNTs on the counter electrode. © 2005 American Institute of Physics.



FAU-Autoren / FAU-Herausgeber

Graupner, Ralf PD Dr.
Naturwissenschaftliche Fakultät
Hirsch, Andreas Prof. Dr.
Lehrstuhl für Organische Chemie II
Ley, Lothar Prof. Dr.
Naturwissenschaftliche Fakultät


Zitierweisen

APA:
Graupner, R., Abraham, J., Vencelová, A., Lauffer, P., Ley, L., & Hirsch, A. (2005). Fuctionalization of single-walled carbon nanotubes with organo-lithium compounds: A combined XPS, STM, and AFM study. In Electronic Properties of Novel Nanostructures (pp. 248-251). American Institute of Physics.

MLA:
Graupner, Ralf, et al. "Fuctionalization of single-walled carbon nanotubes with organo-lithium compounds: A combined XPS, STM, and AFM study." Electronic Properties of Novel Nanostructures American Institute of Physics, 2005. 248-251.

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