C70 vs. C60 in zinc porphyrin-fullerene dyads: prolonged charge separation and ultrafast energy transfer from the second excited singlet state of porphyrin

被引：40

作者：

Kesti, Tero ^{[1
]}

Tkachenko, Nikolai ^{[1
]}

Yamada, Hiroko ^{[2
]}

Imahori, Hiroshi ^{[3
,4
]}

Fukuzumi, Shunichi ^{[2
]}

Lemmetyinen, Helge ^{[1
]}

机构：

[1] Tampere Univ Technol, Inst Mat Chem, POB 541, Tampere 33101, Finland

[2] Osaka Univ, Grad Sch Engn, Dept Mat & Life Sci, Japan Sci & Technol Corp JST,CREST, Suita, Osaka 5650871, Japan

[3] Kyoto Univ, Grad Sch Engn, Dept Mol Engn, PRESTO,Japan Sci & Technol Corp JST,Sakyo Ku, Kyoto 6068501, Japan

[4] Kyoto Univ, Fukui Inst Fundamental Chem, Sakyo Ku, Kyoto 6068103, Japan

来源：

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES | 2003年 / 2卷 / 03期

基金：

芬兰科学院;

关键词：

D O I：

10.1039/b210127k

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The second excited singlet (S-2) state of porphyrin was efficiently quenched by the attached fullerene-C-70 moiety in a zinc porphyri n-C-70 dyad. The quenching is largely explained by energy transfer to C-70, but the possibility of additional reactions involving the S-2 state of porphyrin is discussed. Singlet energy transfer was found to be an important decay pathway also for the first excited singlet (S-1) state of porphyrin. In the polar solvent benzonitrile a charge-separated state was formed, and its lifetime was 890 ps, 50% longer than in the analogous porphyrin-C-60 dyad.

引用

页码：251 / 258

页数：8

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