Photochemical behavior of single-walled carbon nanotubes in the presence of propylamine.
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.
Department of Chemistry, Tokyo Gakugei University, 184-8501 Tokyo (Japan). ymaeda@u-gakugei.ac.jp.
Yutaka
Y
Maeda
Yuhei
Y
Hasuike
Kei
K
Ohkubo
Atsushi
A
Tashiro
Shinya
S
Kaneko
Masayuki
M
Kikuta
Michio
M
Yamada
Tadashi
T
Hasegawa
Takeshi
T
Akasaka
Jing
J
Zhou
Jing
J
Lu
Shigeru
S
Nagase
Shunichi
S
Fukuzumi
D000588:Amines / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010316:Particle Size; D055668:Photochemical Processes; D011437:Propylamines / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods
D000588:Amines; D037742:Nanotubes, Carbon; D011437:Propylamines
amines; carbon nanotubes; electron transfer; esr spectroscopy; photochemistry