作者:Bruce H. McCosar、Kirk S. Schanze
DOI:10.1021/ic9605074
日期:1996.1.1
ion-pair charge transfer transition. Stern-Volmer emission quenching studies indicate that BzBPh(3)(-) quenches the luminescent dpi (Re) --> pi (bpy) metal-to-ligand charge transfer excited state of the (bpy)Re(CO)(3)(py)(+) chromophore. The quenching is attributed to electron transfer from the benzylborate anion to the photoexcited Re(I) complex, (bpy(-)(*))Re(II)(CO)(3)(py)(+) + BzBPh(3)(-) --> (bpy
盐[(bpy)Re(CO)(3)(py)(+)] [BzBPh(3)(-)](ReBo的光物理性质和光化学,其中bpy = 2,2'-联吡啶,py =吡啶,Bz = C(6)H(5)CH(2)和Ph = C(6)H(5))已在THF和CH(3)CN溶液中进行了研究。紫外可见吸收和稳态发射光谱表明,THF中的ReBo主要以离子对形式存在。在THF溶液中观察到盐的吸收带很弱,这归因于光学离子对电荷转移跃迁。Stern-Volmer发射淬灭研究表明BzBPh(3)(-)淬灭了(bpy)Re(CO)(3)的发光dpi(Re)-> pi(bpy)金属-配体电荷转移激发态(py)(+)发色团。淬灭归因于电子从苄基硼酸根阴离子转移至光激发的Re(I)络合物,(bpy(-)(*))Re(II)(CO)(3)(py)(+)+ BzBPh(3) (-)-> (bpy(-)(*))Re(I)(CO)(3)(py)+