Polyether-bridged sexithiophene as a complexation-gated molecular wire for intramolecular photoinduced electron transfer

被引：47

作者：

Oike, T

Kurata, T

Takimiya, K

Otsubo, T ^{[1
]}

Aso, Y

Zhang, HM

Araki, Y

Ito, O

机构：

[1] Hiroshima Univ, Grad Sch Engn, Dept Appl Chem, Higashihiroshima 7398527, Japan

[2] Osaka Univ, Inst Sci & Ind Res, Ibaraki 5670047, Japan

[3] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 44期

关键词：

D O I：

10.1021/ja055648w

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The porphyrin-sexithiophene-fullerene triad 2, where the two central thiophene units of the sexithiophene spacer are bridged with a crown-ether-like polyether chain, undergoes efficient intramolecular electron transfer from the photoexcited porphyrin moiety to the fullerene through the sexithiophene. However, complexation with a sodium cation in the crown ether ring causes complete suppression of electron transfer as a result of a drastic conformational change of the sexithiophene backbone. Furthermore, decomplexation resumes the photoinduced electron transfer. This on/off switching phenomenon indicates that the polyether-bridged sexithiophene can function as a complexation-gated molecular wire. Copyright © 2005 American Chemical Society.

引用

页码：15372 / 15373

页数：2

共 21 条

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