Synthesis of 3-Cyano-6-hydroxy-5-[2-(perfluoroalkyl)phenylazo]-2-pyridones and Their Application for Dye Diffusion Thermal Transfer Printing

Abstract

Abstract New fluorine-containing azopyridone dyes, 3-cyano-6-hydroxy-5-[2-(perfluoroalkyl)phenylazo]-2-pyridones, have been synthesized. Though the introduction of a long perfluoroalkyl group lowered film forming ability and sensitivity, 5-[2-(trifluoromethyl)phenylazo]- and 5-[2-(perfluorobutyl)phenylazo]-3-cyano-4-methyl-6-hydroxy-2-pyridones showed good photostability.