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Studies of the antenna effect in polymer molecules: 24. solar photosynthesis of previtamin D3 in aqueous solutions of poly(sodium styrenesulfonate-co-2-vinylnaphthalene)
- Source :
- Journal of the American Chemical Society. July 14, 1993, Vol. 115 Issue 14, p5975, 7 p.
- Publication Year :
- 1993
-
Abstract
- Solar light was used to examine the photochemical phase in the synthesis of vitamin D3 in an aqueous solution of poly(sodium styrenesulfonate-co-2-vinylnaphthalene) (PSSS-VN), to introduce the use of photoenzymes as microphotoreactors. Solar energy was applied to initiate useful and specific syntheses of organic compounds in water solution. The pendant naphthalene chromophores in the copolymer photosensitized the photoisomerization of 7-dehydrocholesterol to previtamin D3 through singlet-singlet energy transfer. The triplet-sensitized isomerization of tachysterol to previtamin caused the absence of tachysterol, an important side product developed during photoisomerization in organic solution. The high regional concentration of tachysterol near the energy donors enhances the efficacy of triplet-triplet energy transfer from activated polymeric naphthalene chromophores to tachysterol.
- Subjects :
- Polymers -- Research
Isomerization -- Influence
Chemistry
Subjects
Details
- ISSN :
- 00027863
- Volume :
- 115
- Issue :
- 14
- Database :
- Gale General OneFile
- Journal :
- Journal of the American Chemical Society
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.14368133