Photoinduced Intramolecular Electron Transfer of Carbazole Trimer-[60]Fullerene Studied by Laser Flash Photolysis Techniques

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• 作者：Takashi Konno ; Mohamed E. El-Khouly ; Yosuke Nakamura ; Keisuke Kinoshita ; Yasuyuki Araki ; Osamu Ito ; Toshitada Yoshihara ; Seiji Tobita ; Jun Nishimura
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：January 31, 2008
• 年：2008
• 卷：112
• 期：4
• 页码：1244 - 1249
• 全文大小：330K
• 年卷期：v.112,no.4(January 31, 2008)
• ISSN：1932-7455

文摘

Photoinduced intramolecular events of newly synthesized bis(carbazole trimer)-C₆₀ adducts have been studiedby laser flash photolysis techniques in polar and nonpolar solvents. For bis(tert-butyl-substituted carbazoletrimer)-C₆₀ adduct, charge separation takes place via the excited singlet state of the C₆₀ moiety in polar solventsas revealed by the combination of the C₆₀-fluorescence quenching and transient absorptions of the radical ionpair. On the other hand, for bis(nonsubstituted carbazole trimer)-C₆₀ adduct, although charge separation takesplace, the charge recombination is fast because of the lower electron-donor ability.