Comparative study of spectroscopic properties of α- or β-butyloxy-substituted tribenzotetraazachlorin-fullerene conjugates

被引:4
|
作者
Fukuda, Takamitsu [1 ]
Kaneko, Hironori [1 ]
Kobayashi, Nagao [1 ]
机构
[1] Tohoku Univ, Grad Sch Sci, Dept Chem, Sendai, Miyagi 9808578, Japan
基金
日本学术振兴会;
关键词
chlorin; phthalocyanine; fullerene; PHOTOINDUCED ELECTRON-TRANSFER; ZINC NAPHTHALOCYANINES; METAL-FREE; PHTHALOCYANINE; TETRAAZACHLORINS; ABSORPTION; SEPARATION; STATES; DYES; DYAD;
D O I
10.1142/S1088424609001327
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Mixed condensation of 1,2-dicyanofullerene (1) and 3,6-dibutyloxyphthalonitrile (2a) in the presence of nickel chloride dihydrate (NiCl2 center dot 2H(2)O) in quinoline forms an alpha-hexabutyloxy-substituted tribenzotetraazachlorin (TBTAC)-fullerene (C-60) conjugate (3). UV-vis absorption and magnetic circular dichroism (MCD) properties of 3 have been obtained, and the results compared with those of the beta-substituted isomer (4). Although the absorption spectra of 3 and 4 are similar in shape, a significant band shift to longer wavelength is observed for 3. According to the results of DFT calculations, the observed spectroscopic differences are ascribed to differences in the distribution of the MO amplitudes at the alpha- and beta-positions of the TBTAC moiety.
引用
收藏
页码:999 / 1005
页数:7
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