Interaction of N,N'-Di(4-chlorophenyl)diimide 1,1'-Binaphtyl-4,4',5,5',8,8'-hexacarboxylic Acid with Thiourea Dioxide in Solution and Thin Film

Abstract

The reactions of interaction of N,N'-di(4-chlorophenyl)diimide 1,1'-binaphtyl-4,4',5,5',8,8'-hexa-carboxylic acid (cubogen red) with thiourea dioxide in a water-alkaline solution and a Langmuir–Blodgett thin film, obtained on quartz and silicon substrates, have been investigated. Electron absorption spectroscopy have revealed that the reaction of reductive cyclization of cubogen with formation of perylenetetracarboxylic acid diimide derivatives occurs in a water-alkaline solution. At the same time, the interaction of thiourea dioxide with a cubogen thin film does not lead to the formation of cyclization products; nevertheless, it changes the film structure. One might suggest that soluble leuco forms of J aggregates are formed in this case, whereas H aggregates remain intact in the structure.