A photoinduced mixed-valence state in an organic bis-triarylamine mixed-valence compound with an iridium-metal-bridge

Abstract

Upon irradiation a mixed-valence (MV) state is formed in a donor–iridium(III)–acceptor triad by a photoinduced electron transfer process. The resulting radical and intervalence charge transfer (IV-CT) absorptions cover a wide spectral range (3200–400 nm). These results were supported by spectroelectrochemistry, fs-time resolved pump–probe spectroscopy and assisted by TD-DFT calculations.