Photolysis of phenol andp-chlorophenol exposed to KrCl- and Nd-YAG laser light is studied by electron spectroscopy and fluorescence and quantum chemical techniques. The decrease of the quantum yield of phenol fluorescence with increase in the excitation energy is not related to dynamic changes in the intramolecular photophysical processes; rather this is a result of increased photoreaction efficiency. Chlorine substitution for para-state of phenol is shown to strengthen the OH-bond in excitation into the long wavelength absorption band.

Ключевые слова: Фталоцианин алюминия, J-агрегаты, триплетные состояния.

Phenols are the most widespread pollutants of the environment in the world. Investigations of phenol photolysis are of great importance as concerning the phenol removal from water. The experiments have been performed to study phenol phototransformations in aqueous solution at various pH of the samples under UV irradiation. The fluorescence and absorption spectra were recorded. The spectra analysis shows that phenol molecule changes its ionic form under the irradiation. The phenol dimers and other products of photolysis are produced. Strong dependence of phenol photoprocesses on pH was also noticed.

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