氨基酸类铱(Ⅲ)配合物的合成、表征及对汞离子的识别  

Synthesis, Characterization and Hg2+ Recognition Property of Iridium（Ⅲ） Complex Containing L-serine Ligand

作　　者：彭慧 吴磊 陈颜 陈琴 钮智刚[1] 李高楠[1] 莫峥嵘[1] PENG Hui;WU Lei;CHEN Yan;CHEN Qin;NIU Zhigang;LI Gaonan;MO Zhengrong(College of Chemistry and Chemical Engineering,Hainan Normal University,Haikou 571158,China)

机构地区：[1]海南师范大学化学与化工学院

出　　处：《贵金属》2019年第4期7-10,15,共5页Precious Metals

基　　金：海南省自然科学基金项目(218QN236,219MS043);海南师范大学2018年省级大学生创新创业训练计划项目(多位点物质敏感的(酸、碱、重金属离子)铱配合物的设计、合成与性质的研究)

摘　　要：以4-(苯并[d]噻唑-2-基)-N,N-二甲基苯胺(1)、L-丝氨酸作为主配体和辅助配体,合成了一种新型环金属铱配合物(2),所有化合物的结构通过1H NMR、MS和IR进行了表征确认。通过紫外吸收光谱和荧光发射光谱研究了铱配合物(2)的光物理性质,并采用含时密度泛函理论(TDDFT)对其最低能量电子跃迁和最低三重激发态进行了计算。而且铱配合物(2)的荧光发射光谱可选择性地被汞离子猝灭,暗示着此配合物可作为一种高效的turn-off型汞离子磷光传感器。A new bis-cyclometalated iridium complex(2)was synthesized using 4-(benzo[d]thiazol-2-yl)-N,N-dimethylaniline as main ligand(1)and L-serine as ancillary ligand,and its structure was fully characterized by 1H NMR,MS and IR.Its photophysical properties were studied by UV-Vis absorption and photoluminescence spectra.The lowest-energy electronic transitions and the lowest triplet excited states were calculated with time-dependent DFT(TDDFT).The emission of iridium complex(2)can be selectively quenched by Hg2+ion.This suggests that the complex could be an excellent turn-off phosphorescent sensor for Hg2+ion.

关 键 词：铱(Ⅲ)配合物 合成 光谱性质 DFT Hg^2+离子 

分 类 号：O625[理学—有机化学]