A PHOTOPHYSICAL STUDY OF SOLVATOCHROMIC PROBE 6-PROPIONYL-2-(N,N-DIMETHYLAMINO)NAPHTHALENE (PRODAN) IN SOLUTION

被引：56

作者：

BUNKER, CE ^{[1
]}

BOWEN, TL ^{[1
]}

SUN, YP ^{[1
]}

机构：

[1] CLEMSON UNIV,DEPT CHEM,HOWARD L HUNTER CHEM LAB,CLEMSON,SC 29634

来源：

PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1993年 / 58卷 / 04期

关键词：

D O I：

10.1111/j.1751-1097.1993.tb04921.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：

A photophysical study of 6-propionyl-2-(N,N-dimethylamino)naphthalene (PRODAN) in room-temperature solutions under various conditions is reported. The results show no unusual photophysical properties, except for an extremely large solvatochromic shift of PRODAN fluorescence spectrum. The previously reported extra blue emission band for PRODAN in an aqueous solution is identified to be due entirely to trace water-soluble impurities in the sample. The excited-state dipole moment of PRODAN is determined based on solvatochromic results using a known twisted intramolecular charge transfer (TICT) molecule p-(N,N-diethylamino)ethylbenzoate (DEAEB) as a reference to probe specific solute-solvent interactions. The possibility of TICT state formation in PRODAN is discussed, and a solvation equilibrium mechanism is proposed to account for the photophysical behavior of PRODAN.

引用

页码：499 / 505

页数：7

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