Synthesis, characterization and photophysical properties of a new Cu 2+ selective phosphorescent sensor
作者:Tianzhi Yu、Qianguang Yang、Zeyang Zhu、Yuling Zhao、Xiaoxiao Liu、Chengjin Wei、Hui Zhang
DOI:10.1016/j.jorganchem.2017.10.032
日期:2017.12
A new Cu(II) selective phosphorescent sensor based on a cationic iridium(III) complex was synthesized and characterized. Compared with other commonly coexisting metal ions, the Ir(III) complex displayed significant phosphorescence quenching for detecting Cu2+ with a 1:1 stoichiometry in MeOH/H2O (1:1, v/v) solution. Upon addition of Cu2+, the rapid quenching of emission intensity provided a sensitive
合成并表征了一种新型的基于阳离子铱(Ⅲ)配合物的Cu(Ⅱ)选择性磷光传感器。与其他通常共存的金属离子相比,Ir(III)配合物在MeOH / H 2 O(1:1,v / v)溶液中以1:1的化学计量比显示出显着的磷光猝灭,以检测Cu 2+。加入Cu 2+后,发射强度的快速猝灭为检测Cu 2+提供了灵敏的方法。相应的检出限确定为7.6×10 -8 M,Ir(III)络合物与Cu 2+之间的缔合常数经计算为0.31×10 5 M -1。发光成像实验表明,这种Ir(III)配合物具有细胞渗透性,适合通过共聚焦显微镜监测活Hela细胞中的细胞内Cu 2+。