Donor--acceptor-substituted tetrakis(phenylethynyl)benzenes as emissive molecules during pulse radiolysis in benzene

Emission from charge recombination between radical cations and anions of various tetrakis(phenylethynyl)-benzenes (TPEBs) were measured during pulse radiolysis in benzene (Bz). The three types of charge-transfer pathways suggest that the emission spectra of TPEBs with intramolecular charge transfer (ICT) character depend on the substitution pattern and the various kinds of donor and acceptor groups during pulse radiolysis in Bz.