Fluorescence quenching and singlet energy migration in polystyrene and its copolymers

K. Sienicki, C. Bojarski
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引用次数: 2

Abstract

A study of fluorescence quenching of polystyrene and statistic styrene copolymers with methyl methacrylate, ethyl acrylate and acrylonitrile by carbon tetrachloride in 1,2-dichloroethane has been carried out. The results of the study have been interpreted on the basis of the modified Stern-Volmer relation, which takes into account the fact that isolated styrenes do not participate in the process of energy migration. The coefficients of energy migration were determined for the systems studied. It was shown that the intramolecular excimers restrict the process of energy migration in polystyrene and its copolymers. The results obtained are discussed.

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聚苯乙烯及其共聚物的荧光猝灭和单线态能量迁移
研究了聚苯乙烯和统计聚苯乙烯与甲基丙烯酸甲酯、丙烯酸乙酯和丙烯腈共聚物在1,2-二氯乙烷中被四氯化碳荧光猝灭的现象。研究结果是在修正的Stern-Volmer关系的基础上解释的,该关系考虑了分离的苯乙烯不参与能量迁移过程的事实。确定了所研究体系的能量迁移系数。结果表明,分子内准分子限制了聚苯乙烯及其共聚物的能量迁移过程。对所得结果进行了讨论。
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