SOLVATION DYNAMICS IN MOLTEN-SALTS

被引：55

作者：

BART, E ^{[1
]}

MELTSIN, A ^{[1
]}

HUPPERT, D ^{[1
]}

机构：

[1] TEL AVIV UNIV,SACKLER FAC EXACT SCI,SCH CHEM,IL-69978 RAMAT AVIV,ISRAEL

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 42期

关键词：

D O I：

10.1021/j100093a024

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：

We have observed time-dependent shifts in the fluorescence spectra of solvatochromic probe molecules in several molten tetraalkylammonium salts. The phenomenon is a general one and is observed in a variety of fluorophores. The steady-state emission position shows a pronounced dependence on the molten salt cation size. Frequency shifts in steady-state emission spectra are a function of the solute. The solvation of excited large dipoles occurs on two time scales which are both dependent on the cation size. The larger the cation size, the longer the relaxation time. The average experimental solvation time, (T), for the same molten salt depends on the solute. The observed results suggest that molten salts are an appropriate medium for studying excited large dipole solvation.

引用

页码：10819 / 10823

页数：5

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