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Helicity-selective photoreaction of single-walled carbon nanotubes with organosulfur compounds in the presence of oxygen

Title
Helicity-selective photoreaction of single-walled carbon nanotubes with organosulfur compounds in the presence of oxygen
Authors
Maeda Y.Higo J.Amagai Y.Matsui J.Ohkubo K.Yoshigoe Y.Hashimoto M.Eguchi K.Yamada M.Hasegawa T.Sato Y.Zhou J.Lu J.Miyashita T.Fukuzumi S.Murakami T.Tohji K.Nagase S.Akasaka T.
Ewha Authors
Shunichi Fukuzumi
SCOPUS Author ID
Shunichi Fukuzumiscopus
Issue Date
2013
Journal Title
Journal of the American Chemical Society
ISSN
0002-7863JCR Link
Citation
vol. 135, no. 16, pp. 6356 - 6362
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
This report describes a helicity-selective photoreaction of single-walled carbon nanotubes (SWNTs) with disulfide in the presence of oxygen. The SWNTs were characterized using absorption, photoluminescence (PL), Raman, and X-ray photoelectron spectroscopy, scanning electron microscopy, and current-voltage (I-V) measurements. Results showed remarkable helicity-selective (metallic SWNTs/semiconducting SWNTs and diameter) functionalization of SWNTs. The reaction rate decreases in the order of metallic SWNTs > semiconducting SWNTs and small-diameter SWNTs > large-diameter SWNTs. Control experiments conducted under various experimental conditions and ESR and femtosecond laser flash photolysis measurements revealed that the helicity-selective reaction proceeds via a photoinduced electron transfer reaction. The PL and I-V measurements showed that the photoreaction is effective not only to control SWNT conductivity but also for the band gap modulation of semiconducting SWNTs. © 2013 American Chemical Society.
DOI
10.1021/ja402199n
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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