HYDROPHOBIC EFFECTS ON PHOTOCHEMICAL AND PHOT-OPHYSICAL PROCESSES Ⅶ AGGREGATION OF 2-HYDROXY-4-ALKOXYBENZOPHENONE IN POOR SOLVENTS

doi:10.7517/j.issn.1674-0475.1991.02.85

Abstract

Abstract: The absorption spectra of 2-hydroxy-4-octoxybenzophenone (HODB) and 2-hydroxy-4-methoxybenzophenone (HMDB) both in good solvents (cyclohexane, tetrahydrofuran and methanol) and in poor solvents (ethylene glycol-water mixed solvents) were studied. In poor solvents, aggregation of HODB occurs. The absorption spectrum of HODB in aggregates is similar to that in cyclohexane, indicating that the polarity inside the aggregate is very low. This phenomenon was not observed for HMDB.

Key words: hydrophobic interaction, aggregation, 2-hydroxy-4-alkoxybenzophenone, microscopic polarity within aggregate

Xu CHENG-BAI, TUNG CHEN-HO. HYDROPHOBIC EFFECTS ON PHOTOCHEMICAL AND PHOT-OPHYSICAL PROCESSES Ⅶ AGGREGATION OF 2-HYDROXY-4-ALKOXYBENZOPHENONE IN POOR SOLVENTS[J]. Imaging Science and Photochemistry, 1991, 9(2): 85-90.

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HYDROPHOBIC EFFECTS ON PHOTOCHEMICAL AND PHOT-OPHYSICAL PROCESSES Ⅶ AGGREGATION OF 2-HYDROXY-4-ALKOXYBENZOPHENONE IN POOR SOLVENTS

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