作者:Lu Zhang、Lei Zhu
DOI:10.1021/jo8015083
日期:2008.11.7
Photochemically stable fluorescent heteroditopic ligands (9 and 10) for zinc ion were prepared and studied. Two independent metal coordination-driven photophysical processes, chelation-enhanced fluorescence (CHEF) and internal (or intramolecular) charge transfer (ICT), were designed into our heteroditopic ligand framework. This strategy successfully relates three coordination states of a ligand, non-
制备并研究了锌离子的光化学稳定的荧光异位配体(9和10)。在我们的异位配体框架中设计了两个独立的金属配位驱动的光物理过程,螯合增强荧光(CHEF)和内部(或分子内)电荷转移(ICT)。该策略成功地将非配位,单配位和双配位的配体的三个配位状态与三个荧光状态关联:荧光关断,在一个波长下导通和在另一波长下导通。该配体平台为广泛的范围内的锌浓度定量(Zhang,L .; Clark,RJ; Zhu,L. Chem.-Eur。J. 2008,14,2894-2903)和分子生物学应用提供了化学基础。逻辑功能(Zhang,L .; Whitfield,WA; Zhu,L.Chem.Commun。2008,1880-1882)。使用连续变化的乔布方法和等温滴定量热法(ITC)在乙腈中研究了异二位配体7-10中两个结合位点二聚烯丙基氨基和2,2'-联吡啶的结合化学计量。在形成单锌配合物时,7-10的荧光增