Metal-Directed Synthesis of Enantiomerially Pure Dimetallic Lanthanide Luminescent Triple-Stranded Helicates
作者:Floriana Stomeo、Christophe Lincheneau、Joseph P. Leonard、John E. O’Brien、Robert D. Peacock、Colin P. McCoy、Thorfinnur Gunnlaugsson
DOI:10.1021/ja9032204
日期:2009.7.22
The synthesis and photophysical evaluation of two enatiomerially pure dimetallic lanthanide luminescent triple-stranded helicates is described. The two systems, formed from the chiral (R,R) ligand 1 and (S,S) ligand 2, were produced as single species in solution, where the excitation of either the naphthalene antennae or the pyridiyl units gave rise to Eu(III) emission in a variety of solvents. Excitation
描述了两种对映纯双金属镧系元素发光三链螺旋的合成和光物理评价。由手性 (R,R) 配体 1 和 (S, S) 配体 2 形成的两个系统在溶液中作为单一物种产生,其中萘天线或吡啶基单元的激发产生 Eu(III ) 在各种溶剂中排放。天线的激发也引起了 Eu(2):1(3) 和 Eu(2):2(3) 的圆偏振 Eu(III) 发光发射,它们具有相同的强度和相反的符号,证实了它们在解决方案提供了一个基础,我们能够在此基础上分配 Eu(2):1(3) 和 Eu(2):2(3) 的绝对配置。