Bimolecular quenching of fluorescence and interaction between excited molecules in solution
Bimolecular quenching of fluorescence and interaction between excited molecules in solution
复制标题
溶液中荧光的双分子猝灭和激发分子之间的相互作用
DOI：
10.1080/00268977200101171
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发表时间：
1972
期刊：
影响因子：
--
通讯作者：
S. Nagakura
中科院分区：
文献类型：
--
作者：
Takayoshi Kobayashi;S. Nagakura
在1,2,4-三氯苯或四氢呋喃溶液中观察到荧光蒽、冠烯和3,4-二苯菲的双分子荧光猝灭，并测定了室温（295 K）至77 K不同温度下该过程的速率常数。发现双分子淬火速率常数略小于流体溶剂中扩散控制过程的速率常数。从速率常数的温度依赖性来看，发现猝灭是由于激发态分子在流体介质中的扩散而增强的远程相互作用。
Bimolecular quenching of fluorescence was observed for fluoranthene, coronene and 3,4-benzophenanthrene in 1,2,4-trichlorobenzene or tetrahydrofuran solution, and the rate constant of the process was determined at various temperatures between room temperature (295 K) and 77 K. The bimolecular quenching rate constant was found to be a little smaller than that for a diffusion-controlled process in a fluid solvent. From the temperature dependence of the rate constant the quenching was found to be due to the long-range interaction which is enhanced by diffusion of the excited molecules in fluid media.