Photoinduced electron transfer and excitation energy transfer in directly linked zinc porphyrin/zinc phthalocyanine composite.

摘要: Photoinduced electron transfer (ET) and excitation energy (ENT) reactions in monomer slipped-cofacial dimer systems of a directly linked Zn porphyrin (Por)−Zn phthalocyanine (Pc) heterodyad, ZnPc−ZnPor, were investigated by means the picosecond femtosecond transient absorption spectroscopies. In dyad system two heterodyads connected through coordination bond between imidazolyl-substituted ZnPor bearing ZnPc, ZnPc−ZnPor(D), rapid ENT from to ZnPc subpicosecond time region was followed photoinduced charge separation (CS) recombination (CR) with constants 47 510 ps, respectively. On other hand system, no clear charge-separated state observed although CS constant 200 ps CR ≤70 estimated. These results indicated that arrangement pair porphyrins is advantageous for effective production state. This advantage discuss...