o-Carborane-Triphenylamine Dyad: Studies on Its Acceptor-Donor Behavior toward Dual Redox Mediator

Novel carborane-triphenylamine dyad 1 was successfully prepared. The dyad exhibited the aggregation-induced emission (ATE) property in a solution of THF/water [1/99 (v/v)]. The cyclic voltammogram of 1 measured in tetrabutylammonium perchlorate (TBAP)/DMF using glassy carbon (GC) disk working electrode showed redox couples both at anodic side and cathodic side derived from redox responses of the triarylamine and the carborane moieties, respectively. The mediatory behavior of 1 for the anodic oxidation of benzyl alcohol was clearly confirmed by cyclic voltammetry in the presence of 2,6-lutidine. The catalytic current of 1 for the cathodic reduction of 1,2-dibromo-1,2-diphenylethane was also observed. (C) The Electrochemical Society of Japan, All rights reserved.