Diastereoselective Formation and Photophysical Behavior of a Chiral Copper(I) Phenanthroline Complex
作者:Elvira C. Riesgo、Alberto Credi、Luisa De Cola、Randolph P. Thummel
DOI:10.1021/ic971267a
日期:1998.5.1
identical MLCT absorptions at 442 nm. Both complexes are nonemissive at 298 and 77 K. Stern-Volmer quenching studies were carried out with optically pure Delta- and Lambda-[Ru(bpy)(3)](2+) and racemic [Ru(dpb)(3)](2+) as donors (bpy = 2,2'-bipyridine and dpb = 4,4'-diphenyl-bpy). Neither study provides any evidence of enantioselective quenching, indicating that energy or electron transfer may be occurring
(1R,5S)-(+)-和(1S,5R)-(-)-nopinone与8-氨基喹啉-7-甲醛的Friedländer缩合反应生成对映体纯的(2,3-b)-pineno- 1,10-菲咯啉。这些配体与Cu(I)的配位提供了不可相互转化的手性络合物,在其CD光谱中显示出相同和相反的Cotton效应,以及+0.37 V的相同半波氧化电位和442 nm处的MLCT吸收。两种络合物在298和77 K时均无发射。用光学纯的Delta-和Lambda- [Ru(bpy)(3)](2+)和外消旋[Ru(dpb)(3)]进行Stern-Volmer猝灭研究。 (2+)作为供体(bpy = 2,2'-联吡啶和dpb = 4,4'-二苯基-bpy)。两项研究均未提供对映选择性淬灭的任何证据,