Fluorescence and intramolecular energy transfer in polyphenylene dendrimers

被引:107
作者
Liu, DJ
De Feyter, S
Cotlet, M
Stefan, A
Wiesler, UM
Herrmann, A
Grebel-Koehler, D
Qu, JQ
Müllen, K
De Schryver, FC
机构
[1] Katholieke Univ Leuven, Lab Photochem & Spect, Dept Chem, B-3001 Louvain, Belgium
[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
关键词
D O I
10.1021/ma0344801
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The fluorescence of polyphenylene dendrimers and the intramolecular energy transfer in polyphenylene dendrimers containing a perylenediimide core have been investigated in this paper. Polyphenylene dendrimers composed of tens or hundreds of out-of-plane twisted phenyl units exhibit strong fluorescence, with quantum yields ranging from 0.2 to 0.5 depending on the dendrimer generation and its degree of functionality. The fluorescence of polyphenylene dendrimers can be efficiently quenched by the incorporated perylenediimide core, and consequently, a predominant emission from the core has been observed, indicating a very efficient intramolecular energy transfer.
引用
收藏
页码:5918 / 5925
页数:8
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