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Photochemical Behavior of Single‐Walled Carbon Nanotubes in the Presence of Propylamine |
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| Authors: | Prof Yutaka Maeda Yuhei Hasuike Prof Kei Ohkubo Atsushi Tashiro Shinya Kaneko Masayuki Kikuta Dr Michio Yamada Prof Tadashi Hasegawa Prof Takeshi Akasaka Dr Jing Zhou Prof Jing Lu Prof Shigeru Nagase Prof Shunichi Fukuzumi |
| Affiliation: | 1. Department of Chemistry, Tokyo Gakugei University, 184‐8501 Tokyo (Japan);2. Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency, 565‐0871 Osaka (Japan);3. Life Center of Tsukuba Advanced Research Alliance, University of Tsukuba, 305‐8577 Ibaraki (Japan);4. College of Materials Science and Engineering, Huazhong University of Science and Technology, 430074 Wuhan (China);5. Mesoscopic Physics Laboratory, Department of Physics, Peking University, 100871, Beijing (P. R. China);6. Fukui Institute for Fundamental Chemistry, Kyoto University, 606‐8103, Kyoto (Japan);7. Department of Bioinspired Science, Ewha Womans University, 120‐750 Seoul (Korea) |
| Abstract: | This report describes the photochemical behavior of single‐walled carbon nanotubes (SWNTs) in the presence of propylamine. The SWNTs are characterized by absorption and Raman spectroscopy. The spectral changes due to photoirradiation indicate that reactions occur predominantly with the metallic SWNTs and small‐diameter SWNTs. The detection of amine radicalcation species by ESR spectroscopy reveals photoinduced electron transfer from the amine to the excited SWNTs. After exposure of the photoirradiated SWNTs to air, the characteristic spectra were recovered, except for that of the small‐diameter SWNTs. The results suggest that, after photoreduction of the SWNTs, subsequent selective sidewall functionalization of the small‐diameter SWNTs occurs. |
| Keywords: | amines carbon nanotubes electron transfer esr spectroscopy photochemistry |
