Controlling the Helicity of 2,2‘-Bipyridyl Ruthenium(II) and Zinc(II) Hemicage Complexes
作者:Karl D. Oyler、Frederick J. Coughlin、Stefan Bernhard
DOI:10.1021/ja067016v
日期:2007.1.1
Complexation of these ligands to Ru(II) afforded diastereomerically pure Delta and Lambda isomers, as verified through circular dichroism and circularly polarized luminescence spectroscopy. Ligands (+)-L2 and (-)-L2 were further coordinated to Zn(II) to form a complex with intriguing photophysical properties. Whereas Zn(bpy)32+ was shown to be a fluorescent emitter outside the visible spectrum, the
合成了新的 4,5-pineno-2,2'-bipyridine 配体的两种对映异构体,随后通过苯基接头将配体掺入 hemicage 配体中以产生配体 (+)-L1 和 (-)-L1 或通过 mesityl 接头产生配体 (+)-L2 和 (-)-L2。这些配体与 Ru(II) 的络合提供了非对映异构纯的 Delta 和 Lambda 异构体,通过圆二色性和圆偏振发光光谱证实。配体 (+)-L2 和 (-)-L2 进一步与 Zn(II) 配位以形成具有有趣光物理特性的复合物。虽然 Zn(bpy)32+ 被证明是可见光谱之外的荧光发射体,但笼罩过程提供了前所未有的系统间交叉增强,随后切换到蓝光的磷光发射。此外,