π-Chromophore-functionalized SWNTs by covalent bonding: substantial change in the optical spectra proving strong electronic interaction

Weihong Zhu; Nobutsugu Minami; Said Kazaoui; Yeji Kim

doi:10.1039/B405962J

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π-Chromophore-functionalized SWNTs by covalent bonding: substantial change in the optical spectra proving strong electronic interaction†

Weihong Zhu,‡^a Nobutsugu Minami,*^a Said Kazaoui^a and Yeji Kim^a

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* Corresponding authors

^a Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, Japan
E-mail: n.minami@aist.go.jp
Fax: 81 298 61 6309
Tel: 81 298 61 9385

Abstract

Electronic interaction between SWNTs and covalently linked π-chromophores is shown to critically depend on the bond length. A shorter link results in considerable changes in the absorption and luminescence spectra of the chromophore. The results suggest that the design of the bonding structure enables tuning of the electronic interaction between SWNTs and chromophores.

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Supplementary files

Fig. S1: UV-Vis-Near IR absorption spectra of a-SWNT-CO ₂H, b-SWNT-CO ₂H in DMF. Fig. S2: near IR absorption spectra of the intermediate NI, a-SWNT-NI, and b-SWNT-NI in CHCl ₃. Fig. S3: a possible resonance strucure of SWNT-NI. Fig. S4: luminescence excitation spectra monitored at 550 nm of a-SWNT-NI, b-SWNT-NI, the reference compounds NI-Ac, and NI DOC (322K)

Article information

DOI: https://doi.org/10.1039/B405962J
Article type: Communication
Submitted: 20 Apr 2004
Accepted: 14 May 2004
First published: 02 Jun 2004

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J. Mater. Chem., 2004,14, 1924-1926

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π-Chromophore-functionalized SWNTs by covalent bonding: substantial change in the optical spectra proving strong electronic interaction

W. Zhu, N. Minami, S. Kazaoui and Y. Kim, J. Mater. Chem., 2004, 14, 1924 DOI: 10.1039/B405962J

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Journal of Materials Chemistry

π-Chromophore-functionalized SWNTs by covalent bonding: substantial change in the optical spectra proving strong electronic interaction†

Abstract

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π-Chromophore-functionalized SWNTs by covalent bonding: substantial change in the optical spectra proving strong electronic interaction

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