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科学通报  2012 

双核多吡啶铂(II)-紫精二元电子给受体体系的光诱导电子转移

DOI: 10.1360/csb2012-57-7-514, PP. 514-518

Keywords: 光诱导电子转移,电荷分离,三联吡啶铂(Ⅱ)配合物,紫精自由基

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Abstract:

设计合成了紫精(MV2+)桥连4′-(4-甲基-苯基)-2,2′6′,2′′-三联吡啶铂(Ⅱ)(4-CH3-PhN^N^NPtCl)的双核配合物1,{[MV2+(4-CH2PhN^N^NPtCl)22+]·4PF6-}.利用紫外可见吸收光谱、发光光谱、电化学循环伏安谱以及瞬态吸收光谱研究了体系的光诱导电子转移过程,发现在乙腈/甲醇混合溶剂中该二元体系光诱导电子转移的速率常数kCS大于1.4×108s-1,电子回传的速率常数kCR大于2.1×103s-1,电荷分离态寿命长达479μs.

References

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[19]  Rehm D, Weller A. Kinetics of fluorescence quenching by electron and H-atom transfer. Isr J Chem, 1970, 8: 259-271

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