Pincer-Type Platinum(II) Complexes Containing N-Heterocyclic Carbene (NHC) Ligand: Structures, Photophysical and Anion-Binding Properties, and Anticancer Activities
作者:Kai Li、Taotao Zou、Yong Chen、Xiangguo Guan、Chi-Ming Che
DOI:10.1002/chem.201406453
日期:2015.5.11
as a light “switch‐on” sensor for the detection of CN− ion with high selectivity. The in vitro cytotoxicity of the PtII complexes towards HeLa cells has been evaluated. Complex 12 showed high cytotoxicity with IC50 value of 0.46 μM, whereas 1–4 and 6–8 are less cytotoxic. The cellular localization of the strongly luminescent complex 12 traced by using emission microscopy revealed that it mainly localizes
两类钳型的Pt II络合物含有三齿N-供配体(1 - 8)或C-去质子化的N R个C ^ N配位体衍生自1,3-二(2-吡啶基)苯(10 - 13)和辅助合成了N-杂环卡宾(NHC)配体。[PT(trpy)(NHC)] 2+配合物1 - 5在CH显示绿色磷光2氯2(Φ:1.1-5.3%; τ:0.3-1.0微秒)在室温下。在77 K的玻璃溶液中观察到1至7的中等至强排放,而1 –6处于固态。的[PT(N ^ C ^ N)(NHC)] +络合物10 - 13显示强烈的绿色磷光与量子产率高达65%在CHCl 3。在各种溶剂中检查了1与多种阴离子的反应。的三齿N-供配体1名经历与CN置换反应-在质子溶剂。所述N个^ C ^ N配体通过CN的类似位移-已经观察到10,从而导致发光“关断”的响应。水溶性的含有蒽基官能化NHC配体的7可作为检测CN的轻型“接通”传感器−高选择性的离子。已经评估了Pt