Photochemical Synthesis and Electrochemical and Photophysical Properties of 2,7-Diarylbenzo[1,2-d:4,3-d′]bis(thiazoles)
Anastasia S. Kostyuchenko, Evgenii B. Uliankin, Anton J. Stasyuk, Анна Л. Самсоненко, Tatyana Yu. Zheleznova, Антон Л. Шацаускас, Alexander S. Fisyuk
Abstract
This article focuses on the development of practical approaches to the preparation of benzo[1,2-d:4,3-d′]bis(thiazoles) using blue light-induced photochemical cyclization of N,N′-(1,4-aryl)dithioamides in the presence of p-chloranil as a mild oxidant. The proposed method allows to obtain benzo[1,2-d:4,3-d′]bis(thiazoles) containing donor substituents in the conjugated chain. Photophysical and (spectro)electrochemical properties of 2,6-di([2,2′-bithiophen]-5-yl)benzo[1,2-d:4,3-d′]bis(thiazole) and -benzo[1,2-d:4,5-d′]bis(thiazole) are studied in detail. The properties of the synthesized compounds suggest their potential applications for organic electronics.