Dresden 2009 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 9: Poster 1

HL 9.1: Poster

Monday, March 23, 2009, 14:30–17:00, P2

Noncovalent Functionalization of Single Walled Carbon Nanotubes — •Pascal Bluemmel, Vitaliy Datsyuk, Antonio Setaro, and Stephanie Reich — Fachbereich Physik, Freie Universitaet, Berlin

Functionalization provides a tool to alter the electronic and dynamic properties of carbon nanotubes [1-2]. The degree of alteration depends on the type of bonding and the properties of the attached molecule. For some applications it is important to minimize the influence of the bond. Noncovalent functionalization is indicated to be a suitable way of attaching molecules to nanotubes while avoiding drastic modifications due to the bond itself [3].

We investigate pyrene and other organic molecules that are exohedrally adsorbed onto the nanotube surface via pi-pi stacking. The functionalized nanotubes are probed optically by absorption-, photoluminescence- and Raman spectroscopies.

[1] C.S. Lin et al. J. Phys. Chem. C 2007, 111(11), 4069-4073
[2] M. Müller et al. Phys. Stat. Sol. (b) 2007, 244 No. 11, 4056-4059
[3] X. Guo et al. J. Am. Chem. Soc. 2005, 127, 15045-15047