화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.256, 487-492, 1994
Triplet-State Photoexcitations in Frozen-Solutions of Oligothiophenes
We present studies of near-steady-state photoinduced absorption (PIA) spectroscopy of well-defined alpha-oligothiophenes (T-n, n = 6,7,9, and 11) in frozen 2MeTHF solution. The PIA spectra and the excited state lifetimes are consistent with the signatures of a photoexcited triplet state. The triplet photoexcitation is created via an intrachain mechanism and decays nonradiatively with monomolecular kinetics.