on exTTF. MV2+ clearly oxidized [Ru(bpy)3]+ and thereby re‐instated ground‐state [Ru(bpy)3]2+ in triads in which exTTF had been oxidized to exTTF·+, but further excitation of the solution containing the exTTF·+‐PTZ‐[Ru(bpy)3]2+ photoproduct did not provide evidence for exTTF2+. Nevertheless, it seems that the design principle of a covalent donor‐donor‐sensitizer triad (as opposed to simpler donor‐sensitizer
合成了由[Ru(bpy)3 ] 2+(bpy = 2,2'-bipyridine)光敏剂,一级
吩噻嗪(
PTZ)供体和二级(延伸)
四硫富瓦烯(ex
TTF)供体组成的分子三重体/ Vis瞬态吸收光谱。最初的光诱导电子从
PTZ转移到3 MLCT激发的[Ru(bpy)3 ] 2+发生在不到60 ps的时间内,随后通过从ex
TTF转移电子以300 ps的时间来再生
PTZ。所得的包含ex
TTF · +和[Ru(bpy)3 ] +的光产物在脱气的CH 3中的寿命为6100 psCN在室温下。在存在过量的
甲基紫精(MV 2+)的情况下,对三重轴进行了另外的一脉冲和两脉冲激光闪光光解研究,以探索ex
TTF上光驱动电荷积累的可能性。MV 2+明显氧化了[Ru(bpy)3 ] +,从而使ex
TTF已被氧化成ex
TTF · +的三联体恢复了基态[Ru(bpy)3 ] 2+,但进一步激发了含有ex
TTF · + -
PTZ-