A new fluorophore, 4-methyl-2-(2-pyridyl)-5-(2-thiophenyl)thiazole (2-PTT), was reported as a ratiometically fluorescent sensor of zinc(II) based on dual-emission with selectivity and sensitivity. Two emission bands at 440 and 497 nm were observed before and after addition of zinc(II), respectively. Job’s plot disclosed the 1:1 stoichiometry between 2-PTT and zinc(II). The binding constant was evaluated as 2.09 × 105 M−1 based on fluorescence titration experiment.
                                    一种新型荧光团4-甲基-2-(2-
吡啶基)-5-(2-
噻吩基)
噻唑(2-P
TT)被报道为一种基于双发射的
锌(II)比率荧光传感器,具有选择性和敏感性。在添加
锌(II)之前和之后,分别观察到440和497 nm处的两个发射带。Job图揭示了2-P
TT和
锌(II)之间的1:1
化学计量比。根据荧光滴定实验,结合常数被评估为2.09×105 M-1。