Electrochemical measurements were used to estimate the driving force for charge recombination (CR), with deltaE(CR) based on the reduction potential corresponding to Pt(X(2)-bpy)(C triple bond C-Ar)(2) --> Pt(X(2)-bpy(*)(-))(C triple bond C-Ar)(2) and the oxidation corresponding to donor --> donor(*)(+). Kinetic information from the TA measurements was used to correlate rate and driving force with the electron
铂二
亚胺双(
乙炔)生色团用于发色团-供体二元复合物中用
吩噻嗪供体探索光诱导的分子内还原淬灭。通式为Pt(X(2)-bpy)(C三键CpC(6)H(4)CH(2)(D))(2)的化合物(其中D =
吩噻嗪(
PTZ)或三
氟甲基
吩噻嗪(T
PZ)和X =(t)Bu或CO(2)Et)是通过CuI催化的偶联反应由相应的Pt(X(2)-bpy)Cl(2)和芳基
乙炔合成的。探索了对于溶剂的依赖性,研究了该系统在MeCN,CH(2)Cl(2),EtOAc和
甲苯中的X =(t)Bu的情况。
铂二
亚胺双(
乙炔化物)的(3)MLCT激发态的电子转移猝灭发生在MeCN中,而没有激发态的内在发射,但是在
甲苯中,
PTZ和T
PZ二元复合物均未表现出发射猝灭。皮秒泵浦探针瞬态吸收(TA)实验用于监测(3)MLCT激发态和电子转移以形成电荷分离(CS)态的衰减。根据与Pt(X(2)-bpy)(C三键C-Ar)(2)相对应的还原电