PHOTOLUMINESCENT PROPERTIES OF OCTADECYLRHODAMINE-B IN WATER, IN ALCOHOLS AND IN MIXED WATER-ALCOHOL SOLUTIONS

被引：13

作者：

NAKASHIMA, K

FUJIMOTO, Y

机构：

[1] Laboratory of Chemistry, College of Liberal Arts, University of Saga, Saga, 840

来源：

PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1994年 / 60卷 / 06期

关键词：

D O I：

10.1111/j.1751-1097.1994.tb05148.x

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Fluorescence, excitation and absorption spectra of octadecylrhodamine B (ORB) have been observed in solutions of water, methanol, ethanol and other simple alcohols. A remarkable increase in the ORE fluorescence intensity occurs when the probe is transferred from water to the alcohols. This effect is ascribed to the release of ORE fluorescent monomers from nonfluorescent multimers, which exist predominantly in water. The dependence of the fluorescence intensity on the composition of water-alcohol binary solvent systems shows that hydrophobic interactions play an important role in the monomer reversible arrow multimer equilibrium of ORE in these solutions. The fluorescence lifetimes of ORE in the alcohols are also reported.

引用

页码：563 / 566

页数：4

共 14 条

[1] EFFECT OF SOLVENT POLARITY ON NONRADIATIVE PROCESSES IN XANTHENE DYES - THE ACID FORM OF RHODAMINE-B IN NITRILE SOLVENTS [J].