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Chemical communications (Cambridge, England)

Fluorescence photoswitching based on a photochromic pKa change in an aqueous solution.


PMID 23023587

Abstract

Reversible fluorescence photoswitching of RSA-AZO dyad 1 was clearly demonstrated in an acidic aqueous solution. The fluorescence photoswitching mechanism is based on the reversible ring opening/closing reactions of the RSA unit induced by a photochromic pK(a) change along with the photoisomerization of the AZO unit.