【摘要】 以8-羟基久洛尼定-9-甲醛和4-苯基氨基硫脲为原料合成了一种新的Schiff碱荧光探针（L）。在乙腈-水（1∶1,v/v,HEPES,pH=7. 4）缓冲溶液中,L与Cu²⁺以1∶1和1∶2两种比例结合,溶液颜色由黄色变为棕黄色,荧光发生猝灭,体系的荧光强度和Cu²⁺浓度在0～13μM的范围内呈线性关系,由此可以实现水体系中对Cu²⁺的高选择性定量检测,检测限为6. 7×10^-8M。更多还原

【Abstract】 An efficient julolidine based Schiff-Base probe L for Cu²⁺was synthesized.In HEPES-buffered CH₃CN-H₂O（ 1 ∶ 1,v/v,pH = 7. 4） solution,L can effectively complex Cu²⁺at a molar ratio of 1 ∶ 1 and 1 ∶ 2,leading to a color change from yellow to brown yellow and significant fluorescence quenching at 528 nm.Good linearity was obtained in the range of 0 ～ 1. 3×10-5M Cu²⁺giving the detection limit of 6. 7×10^-8M.更多还原