Photoinduced electron transfer within porphyrin-containing poly(amide) dendrimers

被引：40

作者：

Capitosti, GJ

Cramer, SJ

Rajesh, CS

Modarelli, DA ^{[1
]}

机构：

[1] Univ Akron, Dept Chem, Akron, OH 44325 USA

[2] Univ Akron, Ctr Laser & Opt Spect, Knight Chem Lab, Akron, OH 44325 USA

来源：

ORGANIC LETTERS | 2001年 / 3卷 / 11期

关键词：

D O I：

10.1021/ol015837t

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

[GRAPHICS] The synthesis and photophysical characterization of a series of free base porphyrin containing polyamide dendrimers terminated with anthraquinone groups (FbP-Ga-AQ(n), a = 1-3, n = 12, 36, 108) are described. Substantial quenching (58-75%) of the porphyrin fluorescence of FbP-Ga-AQ(n) is observed when compared to the analogous ethyl terminated dendrimers (FbP-Ga-Et-n) in steady state fluorescence experiments and is attributed to intramolecular electron transfer. Time resolved fluorescence experiments were fit to 2-3 exponentials, indicating multiple orientations for electron transfer, consistent with the flexible nature of these dendrimers.

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页码：1645 / 1648

页数：4

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