Springer Online Journal Archives 1860-2000
Chemistry and Pharmacology
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Summary The xanthene dye Rose Bengal (disodium salt of 3′, 4′, 5′, 6′-tetrachloro-2, 4, 5, 7-tetraiodofluorescein) has been covalently bound to a linear (soluble) copoly styrene-vinyl benzyl chloride. The chemical union takes place through alkylation of the carboxylate anion of the dye by one of the chloromethyl groups grafted on the polymer. The quantum yield of singlet oxygen generation results equal to that of the free dye and the photostability seems to be improved.
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