Room-temperature luminescence properties of rho-aminobenzoic acid adsorbed on sodium acetate-sodium chloride mixtures

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00144a029· OSTI ID:6084637

Ramasamy, S M; Hurtubise, R J

Room-temperature fluorescence and phosphorescence quantum yield, triplet formation efficiency, and phosphorescence lifetime values were obtained for the anion of rho-aminobenzoic acid adsorbed on sodium acetate and several sodium acetate-sodium chloride mixtures. From these data, rate constants for phosphorescence and for radiationless transition from the triplet state were obtained. The results revealed that several factors are important for maximum room-temperature phosphorescence for the anion of rho-aminobenzoic acid. One of the most important conditions for strong room-temperature phosphorescence of the anion was how efficiently the matrix was packed with sodium acetate molecules. The same general conclusion was found for room-temperature fluorescence, but the phosphorescence quantum yield increased more dramatically than the fluorescence quantum yield.

• Research Organization: Univ. of Wyoming, Laramie
• DOE Contract Number: FG02-86ER13547
• OSTI ID: 6084637
• Journal Information: Anal. Chem.; (United States), Vol. 59:17
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACETATES
ADSORPTION
PABA
FLUORESCENCE
PHOSPHORESCENCE
SODIUM CHLORIDES
SORPTIVE PROPERTIES
SODIUM COMPOUNDS
EXPERIMENTAL DATA
LIFETIME
MEDIUM TEMPERATURE
QUANTUM EFFICIENCY
RADIATIONLESS DECAY
ALKALI METAL COMPOUNDS
AMINO ACIDS
CARBOXYLIC ACID SALTS
CARBOXYLIC ACIDS
CHLORIDES
CHLORINE COMPOUNDS
DATA
DE-EXCITATION
EFFICIENCY
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
LUMINESCENCE
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
SORPTION
SURFACE PROPERTIES
400500* - Photochemistry