Electronic-type- and diameter-dependent reduction of single-walled carbon nanotubes induced by adsorption of electron-donor molecules

Jing Zhou, Yutaka Maeda, Jing Lu, Atsushi Tashiro, Tadashi Hasegawa, Guangfu Luo, Lu Wang, Lin Lai, Takeshi Akasaka, Shigeru Nagase, Zhengxiang Gao, Rui Qin, Wai Ning Mei, Guangping Li, Dapeng Yu
Small 2009, 5 (2): 244-55
The adsorption of the organic donor molecules tetrakis(dimethylamino)ethylene (TDAE) and cobaltocene (CoCp(2)) on high-pressure CO decomposition (HiPco) single-walled carbon nanotubes (SWNTs) is investigated using density functional theory (DFT), optical absorption, and Raman spectra methods. The selective reduction of SWNTs according to the electronic type and diameter of SWNTs is revealed. The reduction rate decreases in the order: metallic SWNTs >or= large-diameter semiconducting SWNTs > small-diameter semiconducting SWNTs.

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