Dendritic sidegroups as three-dimensional barriers to aggregation quenching of conjugated polymer fluorescence

被引:144
作者
Jakubiak, R
Bao, Z
Rothberg, L [1 ]
机构
[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA
[2] Univ Rochester, NSF, Ctr Photoinduced Charge Transfer, Rochester, NY 14627 USA
[3] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA
关键词
dendritic sidegroups; three-dimensional barriers; conjugated polymer fluorescence;
D O I
10.1016/S0379-6779(00)00225-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the photophysics of poly-phenylenevinylene (PPV) polymers with large dendritic sidegroups under both isolated chain and aggregated chain conditions. Aggregation causes a substantial reduction in photoluminescence (PL) quantum yield but that decrease is ameliorated by the attachment of an additional generation of dendron to the PPV backbone. Three-dimensional separation of chromophores can be achieved with these sidegroups and the formation of nearly nan-emissive interchain excitations leads to a factor of four enhancements in solid-state PL. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:61 / 64
页数:4
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