DISSOCIATION CONSTANTS OF EXCITED PHENOLS FROM FLUORESCENCE QUENCHING DATA

被引：28

作者：

AVIGAL, I

FEITELSON, J

OTTOLENGHI, M

机构：

[1] Department of Physical Chemistry, Hebrew University, Jerusalem

来源：

JOURNAL OF CHEMICAL PHYSICS | 1969年 / 50卷 / 06期

关键词：

D O I：

10.1063/1.1671423

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：

The quenching effects of a set of carboxylic acid anions on the fluorescence of some phenol derivatives are analyzed. It is found that the quenching rate constants, obtained from the corresponding SternVolmer plots, satisfy the Brønsted general-base catalysis law. Extrapolation of the Brønsted plots to water as base yields values for the pKa's of the various phenols in their lowest excited singlet state. The results are discussed and compared to pKa* values previously obtained from an alternative thermodynamic" procedure."

引用

页码：2614 / +

页数：1

共 11 条

[1]

Bartok W., 1965, PHOTOCHEM PHOTOBIOL, V4, P499

[2]

BELL RP, 1941, ACID BASE CATALYSIS

[3]

BERLMAN IB, 1965, HANDBOOK FLUORESCENC

[4]

CALVERT JG, 1966, PHOTOCHEMISTRY, P799