A new dithienylethene dimer with terminal tertiary amine redox centers: Electrochemical, UV-vis-NIR spectral and electronic transfer charges induced by a stepwise photochromic process

A new diarylethene dimer, with triphenylamine as redox centers, separated by 1,3-butadiynyl has been designed and prepared (see scheme). The dimer exhibited stepwise photochromic reactions by extending irradiation time with UV light, thus successfully achieve photoswitchable charge delocalization and two terminals electronic communication.