Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt.
J Fluoresc. 2012 May;22(3):871-4. doi: 10.1007/s10895-011-1024-y. Epub 2011 Dec 24.
The chiral recognition phenomenon was observed in enantioselective and excited-state energy transfer processes. Based on bimolecular luminescence quenching kinetics for a system containing chiral molecules, the quenching efficiency was evaluated by Stern-Volmer equation for a system containing a chiral R(+) and S(-) resolved quencher species. The utility of this methodology is confirmed by examining the enantio-selective excited-state quenching between Eu(dpa)(3) complex (where dpa = pyridine-2,6-dicarboxylate) acting as the energy donor to R(+)-1,1-Bi(2-Naphthol) and S(-)-1,1-Bi(2-naphthol) as the energy acceptor was studied in solution. The results of this study confirm the utility of luminescence measurements as a probe of chiral discriminatory behavior.
手性识别现象在对映选择性和激发态能量转移过程中被观察到。基于包含手性分子的体系的双分子荧光猝灭动力学，通过 Stern-Volmer 方程评估包含手性 R(+)和 S(-)分辨猝灭剂物种的体系的猝灭效率。通过检查 Eu(dpa)(3)络合物（其中 dpa = 吡啶-2,6-二羧酸酯）作为能量供体与 R(+)-1,1-双（2-萘酚）和 S(-)-1,1-双（2-萘酚）作为能量受体之间的对映选择性激发态猝灭，证实了该方法在溶液中的实用性。这项研究的结果证实了荧光测量作为手性区分行为探针的实用性。
