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Solubilization and Photosensitizing Properties of Some Anthracene Derivatives in Aqueous Micellar Solutions
Solubilization and Photosensitizing Properties of Some Anthracene Derivatives in Aqueous Micellar Solutions
Journal of the Korean Chemical Society. 1991. Oct, 35(5): 452-460
  • Published : October 20, 1991
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Ko, Jeong Soo
Han, Dong Sul
Oh, Hyung Sik
Park, Byung Kwan
Kim, Chong Hyun
Oh, Se Woung

Abstract
The chemical evidence for involvement of singlet oxygen during photoirradiation for 2-ethylanthracene [2-EA] and 9-phenylanthracene [9-PA] was based on the rapid decomposition of 1,3-diphenylisobenzofuran [DPBF] in methanol-water mixture and aqueous CTAB, and SDS micellar solutions. The average microenvironmental polarities of 2-EA and 9-PA were estimated by UV spectroscopic characteristics sensitive to the polarity of solvent. When 2-EA and 9-PA were solubilized in aqueous CTAB, SDS and Brij 35 solutions, their average microenvironmental polarities were polar, and their microenvironmental polarity parameter showed little dependence on the ionic properties of the micelles. The average microenvironmental polarity of 2-EA was similar to the polarity of 40% (w/w) aqueous ethanol, and that of 9-PA was similar to the polarity between 30 and 40% (w/w) aqueous ethanol. It was found that the greater part of these species might be distributed at the surface of micelles when they were solubilized in aqueous micellar solutions. The methanol-water mixture solution appeared to have characteristics more favorable for photooxidation reaction than aqueous micellar solutions.