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Document Type

Research

Keywords

Room Temperature Phosphorescence, luminescence, p-aminobenzoic acid

Abstract

Room temperature phosphorescence (R TP) analysis is a technique in which solutions containing organic phosphors are applied to filter paper and dried in the absence of oxygen. Adsorption to the paper inhibits molecular vibrations and promotes phosphorescence. Although the solvent must be removed by volatilization before phosphorescence can occur, it appears that the nature of the solvent affects the intensity of the resulting phosphorescence. We examined the room temperature phosphorescence of p-aminobenzoic acid which had been dissolved in water, organic solvents, or mixtures of water and organic solvents. It was found that solvent volatility had little correlation with RTP intensity and that solvents with high dielectric constants produced more intense signals.

Publication Date

June 1988

Journal Title

Journal of the Iowa Academy of Science

Volume

95

Issue

2

First Page

38

Last Page

42

Copyright

© Copyright 1988 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf