Abstract:The pressure-dependence photomodulation spectrum of a semiconducting conjugated polymer, phenylsubstituted ladder-type poly(para-phenylene) (Ph-LPPP) with trace-concentrations of metallic impurities, was studied. The so called photo-induced absorption gave the information about the triplet-triplet (TT) transitions and bleaching (PB) of the singlet state in this material. Planarization, therefore, stronger interchain interaction, under pressure was observed. The photo-modulation spectra coupled with Raman scatt… Show more
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