电场
猝灭(荧光)
荧光
电子转移
电子受体
电子
接受者
材料科学
光化学
强度(物理)
领域(数学)
场强
原子物理学
分析化学(期刊)
化学
分子物理学
物理
凝聚态物理
光学
有机化学
磁场
数学
量子力学
纯数学
作者
Maria Hilczer,Sergey D. Traytak,M. Tachiya
摘要
The effect of an external electric field on fluorescence quenching due to electron transfer from a photoexcited electron donor to an acceptor has been analyzed theoretically. The model predicts that at weak fields the variation ΔI(c,F)/I(c,0) in the steady-state monomer fluorescence intensity induced by an external electric field is proportional to the square of the field strength F and to the concentration of acceptors c. Similar relations have been reported for the fluorescence intensity of ethylcarbazole doped in poly-methyl-methacrylate films in the presence of dimethyl terephtathalate and an external electric field with a strength up to 0.01 V/Å. The effect of the free energy change of the electron transfer reaction on the c and F dependencies of ΔI(c,F)/I(c,0) has been discussed within the framework of the present model.
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