作 者: (侯玲杰); (葛金印); (孔祥宇); (董川); (双少敏); (王煜);
机构地区: 山西大学化学化工学院环境科学研究所,太原030006
出 处: 《中国科学:化学》 2017年第8期1000-1006,共7页
摘 要: 本文报道了一种新型席夫碱8-羟基-久洛尼定-(2-吡啶)腙(L)的荧光探针,并用于识别检测Al^(3+).探针L与Al^(3+)络合使溶液颜色由淡黄色变为黄色,同时在480 nm处荧光显著增强,可实现Al^(3+)的选择性识别检测,检测限为8.22×10^(-8)M.通过等摩尔连续变化法测定及质谱表征,L与Al^(3+)形成1:1的络合物,核磁共振光谱进一步确定L与Al^(3+)的结合模式,为探针L应用于离子传感器研制奠定了理论基础. A facile Schiff-base ligand 8-hydroxyjulolidine-pyridyl hydrazone (L) as the fluorescent probe was synthesized and characterized. L was selective toward Al^(3+) ions with a visible color change from pale-to-yellow and fluorescence enhancement at 480 nm.L forms complex with Al^(3+) in 1:1 ratio as supported by Job’s plot analysis and ESI-MS. The binding mode was further confirmed by ~1H NMR titrations. The detection limit was calculated to be 8.22×10^(-8)M for Al^(3+). These merits of L, i.e., requiring facile one-step synthesis and displaying high sensitivity make L a promising candidate as a chemosensor for Al^(3+)ion.