Magnetic field effects on exciplex luminescence in water-tetrahydrofuran and water-dioxane mixtures

被引:16
作者
Bera, PK [1 ]
Nath, D [1 ]
Chowdhury, M [1 ]
机构
[1] INDIAN ASSOC CULTIVAT SCI,DEPT PHYS CHEM,CALCUTTA 700032,W BENGAL,INDIA
关键词
D O I
10.1021/jp9613450
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Magnetic-field-modulated exciplex luminescence in different solvent media has been studied to verify the solvent microheterogeneity effect. In particular, mixtures of a low-polarity component, such as dioxane and tetrahydrofuran, and a highly polar component, such as water, have been used as media where the microheterogeneity has been further modulated by addition of salt and variation of temperature. The results are analysed in light of several proposed models for the solvent effect on MFE's, but no model is found to be completely satisfactory. It has been suggested that multiple intermediate states, instead of a single intermediate state, are formed during the electron-transfer process.
引用
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页码:384 / 391
页数:8
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