氰化物
荧光
滴定法
化学
苯甲醛
亲核细胞
共轭体系
水溶液
光化学
亲核加成
产量(工程)
质子核磁共振
核化学
无机化学
有机化学
材料科学
催化作用
聚合物
物理
冶金
量子力学
作者
Xiuli Chen,Lei Wang,Xiaodong Yang,Liuyan Tang,Yuping Zhou,Ruiyuan Liu,Jinqing Qu
标识
DOI:10.1016/j.snb.2016.10.040
摘要
A novel AIE active fluorescence chemosensor 1 was synthesized with 2-benzothiazoleacetonitrile and 4-(diphenylamino)-benzaldehyde in 73% yield. 1 exhibited prominent selective and sensitive detection to cyanide with significant turn-off fluorescent response in almost pure aqueous media. Moreover, 1 achieved a low detection limited of 0.22 μm (9.44 ppm) which is lower than the maximum level of cyanide in the drinking water (1.9 μm) that the World Health Organization (WHO) permits. The fluorescent response to CN− was attributed to the nucleophilic addition of CN− to the vinyl group of 1 resulting in breaking of the conjugated, which was supported by Job’s plot and 1H NMR titration. The biological applications of 1 were also evaluated and found that 1 exhibited low cytotoxicity and membrane permeability. Furthermore, 1-based test strips could also detect CN− conveniently.
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