Synthesis and characterization of dendritic poly(L-lysine) containing porphyrin-fullerene moieties

被引：16

作者：

Kobata, Keisuke

Ogawa, Junya

Pandey, Shyam S.

Oshima, Hidetoshi

Arai, Toru

Kato, Tamaki

Nishino, Norikazu ^{[1
]}

机构：

[1] Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, Kitakyushu, Fukuoka 8080196, Japan

[2] Kyushu Inst Technol, Fac Engn, Kitakyushu, Fukuoka 8088550, Japan

来源：

SYNTHETIC METALS | 2007年 / 157卷 / 6-7期

关键词：

porphyrin; fullerene; cyclodextrin; adamantanecarboxylic acid; photoluminescence; circular dichroism;

D O I：

10.1016/j.synthmet.2007.03.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Amphiphilic L-lysine dendrons containing porphyrin and fullerene bearing amino acids with the ratio of 2:0, 2:1 and 1:1 were synthesized and characterized using UV-visible absorption spectroscopy, fluorescence emission spectroscopy and transmission electron microscopy. Photoluminescence spectra of these dendrimers showed photoluminescence quenching due to photoinduced electron transfer from porphyrin to fullerene moieties. Transmission electron microscopic observation evidenced the self-association of these dendrimers in water. Controllable and reversible dissociation and re-aggregation of some of the water soluble dendrimers have been investigated using electronic absorption and fluorescence spectra upon the addition of 2-hydroxypropyl-beta-cyclodextrin and 1-adamantanecarboxylic acid in their aqueous dispersion. Enhanced ellipticity of dendritic porphyrin-fullerene conjugate compared to that only dendritic porphyrin indicates intramolecular porphyrin-fullerene interactions. (c) 2007 Published by Elsevier B.V.

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收藏

页码：311 / 317

页数：7

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