Novel 2,1,3-benzothiadiazole derivatives used as selective fluorescent and colorimetric sensors for fluoride ion
作者:Jiefei Wu、Guoqiao Lai、Zhifang Li、Yunxiang Lu、Taohua Leng、Yongjia Shen、Chengyun Wang
DOI:10.1016/j.dyepig.2015.09.021
日期:2016.1
3-benzothiadiazole derivatives, used as colorimetric and fluorescent sensors for fluoride ion were designed, synthesized and characterized. These sensors contained single hydrogen-bond functional groups, which acted as interacting sites for fluoride ion. Both sensors displayed a red color in dimethyl sulfoxide solution. Binding studies revealed that they showed noticeable colorimetric and fluorescent
设计,合成和表征了两种新颖的2,1,3-苯并噻二唑衍生物,用作氟离子的比色和荧光传感器。这些传感器包含单个氢键官能团,这些官能团充当氟离子的相互作用位点。两个传感器在二甲基亚砜溶液中均显示为红色。结合研究显示,他们表现出显着的比色和荧光响应只到F -测试八个阴离子中(F - ,氯- ,溴- ,我-,ACO -,H 2 PO 4 -,HSO 4 -和NO 3 - )。1个1 H NMR滴定证明化合物与氟离子之间的相互作用:在低氟离子浓度下氢键,在高氟离子浓度下去质子。而且,这些化合物通过抑制激发态的分子内质子转移过程而对氟离子表现出高灵敏度和选择性,并且可以通过直接的目视观察来追踪检测过程。