THERMOCHROMIC SHIFTS OF PYRENE EXCIMER FLUORESCENCE

被引：8

作者：

CASTANHEIRA, EMS ^{[1
]}

MARTINHO, JMG ^{[1
]}

机构：

[1] Univ Tecn Lisboa, CTR QUIM FIS MOLEC, INST SUPER TECN, COMPLEXO 1, P-1096 LISBON, PORTUGAL

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 206卷 / 1-4期

关键词：

D O I：

10.1016/0009-2614(93)85514-O

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：

Thermochromic shifts of pyrene excimer were obtained in cyclohexane (25-60-degrees-C) and ethanol (25-70-degrees-C). The observed shifts are due to changes in polarizability between the states involved in the electronic transition. The parameters obtained from thermochromic shifts agree with the ones calculated from solvatochromic shifts. This implies that the difference in polarizability between the electronic states does not change with solvent and temperature in the range of temperatures covered.

引用

页码：45 / 48

页数：4

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