New type of cross-conjugated cyclopentanones as of ketocyanine dye - 2-arylidene-5-((dimethylamino)methylene)cyclopentanones: synthesis and photophysical properties

Abstract

Abstract A simple and efficient method for the synthesis of a new type of ketocyanine dye based on 2-arylidene-5-((dimethylamino)methylene)cyclopentanone by reaction of 2-arylidenecyclopentanones with dimethylformamide dimethyl acetal was discovered. The fluorescent properties of the synthesized compounds are considered depending on the structure, the polarity of medium.