Static and dynamic photoluminescence (PL) quenching of polymer:quencher systems in solutions

被引：14

作者：

Wang, J ^{[1
]}

Wang, D ^{[1
]}

Miller, EK ^{[1
]}

Moses, D ^{[1
]}

Heeger, AJ ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Inst Polymers & Organ Solids, Santa Barbara, CA 93106 USA

来源：

SYNTHETIC METALS | 2001年 / 119卷 / 1-3期

关键词：

photoluminescence; Stern-Volmer constant; static quenching; dynamic quenching; optical absorption; temperature profile;

D O I：

10.1016/S0379-6779(00)00643-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quenching of the PL from conjugated polymers in solution by charge transfer to electron accepters was studied by PL measurements while varying the quencher concentration, the ion concentration in buffered aqueous solutions, and the temperature. For the aqueous solutions, the PL quenching was greatly enhanced by static quenching originating from the formation of a weakly bound complex between the anionic conjugated polymer and cationic electron accepters. The estimated Coulomb binding energy was similar to 150 meV. In contrast, for MEH-PPV and PCBM in 1,2-dichlorobenzene, dynamic quenching was identified as the basic mechanism.

引用

页码：591 / 592

页数：2

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