charge-separated state. The photoinduced events via the excited singlet state of SubPc were monitored by time-resolved emission measurements as well as transient absorption techniques. Efficient charge-separations via the excited states of SubPc were observed with the rates of approximately 10(10) s(-)1. Compared with the SubPc-TPA dyad, a long-lived charge-separated state was observed for the SubPc-TPA-C(60) triad
研究了新合成的亚
酞菁-
三苯胺-
富勒烯三联体(SubPc-
TPA-C60)和亚
酞菁-
三苯胺-双
富勒烯四联体(SubPc-
TPA-(C(60))(2))的光诱导分子内电子转移事件。从头算B3LYP / 3-21G方法探测了三单元组的几何和电子结构,该方法预测SubPc-
TPA(* +)-C(60)(*-)为稳定的电荷分离状态。通过时间分辨发射测量以及瞬态吸收技术来监测通过SubPc激发单线态的光诱导事件。观察到通过SubPc的激发态进行的高效电荷分离,速率约为10(10)s(-)1。与SubPc-
TPA dyad相比,SubPc-
TPA-C(60)三单元组观察到长寿命的电荷分离状态,其在
苯甲腈中的自由基离子对(tau(RIP))的寿命为670 ns。有趣的是,在SubPc-
TPA-(C(60))(2)的电荷分离状态下实现了进一步的电荷稳定,其中在
苄腈中的tau(RIP)被发现为1050 ns。