C3-symmetric triaminoguanidine based colorimetric and fluorometric chemosensor: Sequential detection of Zn2+/PPi, its RGB performance for detection of Zn2+ ion and construction of IMPLICATION logic gate
作者:Balamurugan Tharmalingam、Moorthy Mathivanan、Balasubramanian Murugesapandian
DOI:10.1016/j.saa.2020.118749
日期:2020.12
In this work, new ethyl(E)-2-cyano-3-(1H-pyrrol-2-yl)acrylate appended C3-symmetric star-shape triaminoguanidine based Schiff base (LH3) was designed and synthesized from simple synthons. New probe, LH3 was completely analyzed by 1H NMR, 13C NMR and mass spectrum. In the present probe LH3, effective π-conjugated ethyl(E)-2-cyano-acrylate unit was introduced on the periphery of the pyrrole-triaminoquanidine
在这项工作中,由简单的合成子设计并合成了新的乙基(E)-2-氰基-3-(1H-吡咯-2-基)丙烯酸酯,并附有C 3对称的星形三氨基胍基希夫碱(LH 3)。通过1 H NMR,13 C NMR和质谱对新探针LH 3进行了完全分析。在本探针LH 3中,通过使用精心选择的构建单元,将有效的π-共轭乙基(E)-2-氰基丙烯酸酯单元引入到吡咯-三氨基胍基共轭物的外围。探头LH 3示出了高的选择性和灵敏度朝向的Zn 2+离子经由比色和荧光变化。加入Zn 2+溶液后,LH 3溶液的淡橙色变为酒红色,并且吸收最大值从450 nm移至550 nm,这表明形成了LH 3 -Zn 2+物种。Job的图和质谱分析证实了LH 3和Zn 2+离子之间形成了1:3化学计量的络合物。此外,该集成体显示基于置换金属离子方法对PPi阴离子的选择性检测优于其他阴离子。因此,LH 3对Zn 2+的可逆比色/发射响应经由“开-关-