Typical asymmetric donor-π-bridge-acceptor（D-π-A） zinc porphyrin dyes have been synthesized, and fur- ther modified by reacting the ethynyl groups of them with click reagent through a formal [2＋2] click reaction....Typical asymmetric donor-π-bridge-acceptor（D-π-A） zinc porphyrin dyes have been synthesized, and fur- ther modified by reacting the ethynyl groups of them with click reagent through a formal [2＋2] click reaction. The electronic interaction between the push and pull electronic groups and the click reaction process were investigated by UV-Vis absorption spectroscopy. The nonlinear optical（NLO） properties of the dyes were studied by the Z-scan tech- nique and clearly reverse saturable absorption to saturable absorption（RSA-SA） transition could be observed through click reaction of the dyes with TCNE. Furthermore, the photovoltaic properties of these porphyrin dyes were reaso- nably explained by the J-V curve fitting based on the equivalent-circuit model as well as the comparison between the absorption and incident-photon-to-current-conversion efficiency（IPCE） spectra. Besides, these dyes with different donors or acceptors could self-assembly into different microstructures by phase transfer methodology. Keywords Porphyrin derivative; Click chemistry; Optoelectronic performance; Nonlinear optical property; Dye-sensitized solar cell展开更多
基金Supported by the Major Project of International Cooperation of the Ministry of Science and Technology, China（No. 2013DFBS0340）, the National Natural Science Foundation of China（Nos.51173017, 51373024, 51473020, 61370048）, the Beijing Higher Education Young Elite Teacher Project, China（No.YETP0356） and the Fundamental Research Funds for the Central Uni- versities of China（No.FRF-TP- 14-013A2）.
文摘Typical asymmetric donor-π-bridge-acceptor（D-π-A） zinc porphyrin dyes have been synthesized, and fur- ther modified by reacting the ethynyl groups of them with click reagent through a formal [2＋2] click reaction. The electronic interaction between the push and pull electronic groups and the click reaction process were investigated by UV-Vis absorption spectroscopy. The nonlinear optical（NLO） properties of the dyes were studied by the Z-scan tech- nique and clearly reverse saturable absorption to saturable absorption（RSA-SA） transition could be observed through click reaction of the dyes with TCNE. Furthermore, the photovoltaic properties of these porphyrin dyes were reaso- nably explained by the J-V curve fitting based on the equivalent-circuit model as well as the comparison between the absorption and incident-photon-to-current-conversion efficiency（IPCE） spectra. Besides, these dyes with different donors or acceptors could self-assembly into different microstructures by phase transfer methodology. Keywords Porphyrin derivative; Click chemistry; Optoelectronic performance; Nonlinear optical property; Dye-sensitized solar cell
