Non-radiative excitation energy transfer from a statistic copolymer to acceptor in fluid solutions

K Sienicki, C Bojarski
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引用次数: 2

Abstract

The measurements of the efficiency of non-radiative energy transfer (NET) from a statistic copolymer styrene-methyl methacrylate (donor) to 1,1,4,4-tetraphenyl-1,3-butadiene (acceptor) were carried out in 1,2-dichloroethane to investigate dependence on the acceptor concentration. Marked increase in the transfer efficiency, η, with growing styrene content (fM) in a copolymer was observed, this being evidence of the energy migration along copolymer chain. The drop in efficiency η observed in systems with fM>0·7 was accounted for by the presence of intramolecular excimers. Good agreement was found between the experimental results and the proposed model for NET in the systems investigated.

流体溶液中从统计共聚物到受体的非辐射激发能转移
在1,2-二氯乙烷中测量了统计共聚物苯乙烯-甲基丙烯酸甲酯(供体)到1,1,4,4-四苯基-1,3-丁二烯(受体)的非辐射能量转移效率,以研究受体浓度的依赖性。随着共聚物中苯乙烯含量(fM)的增加,传递效率η显著增加,这是能量沿共聚物链迁移的证据。在fM> = 0·7的体系中观察到的效率η的下降是由于分子内准分子的存在。在所研究的系统中,实验结果与所提出的NET模型吻合良好。
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