The fluorescence spectra of alkyl salicylates I (R = Me, Bu, octyl, dodecyl, hexadecyl) in organic solvents and DMSO-water as well as ethylene glycol-water mixtures were studied. In the mixed solvents, the fluorescence spectra distribution and fluorescence quantum yields of salicylates with long chain are different from those with short chain, indicating aggregation of long chain salicylates under the experimental conditions.

Key words: WATER, ETHANEDIOL, PHOTOCHEMISTRY, AGGREGATION, CARBOXYLIC ACID ESTER, DMSO, SOLVENT EFFECT, SALICYLIC ACID P, HYDROPHOBIC PROPERTIES, FLUOROSPECTROPHOTOMETRY