Selective and colorimetric fluoride chemosensors containing phenol hydroxyl and 1,3,4-oxadiazole groups
作者:Jiantao Ma、Zhe Li、Yanqing Zong、Yi Men、Guowen Xing
DOI:10.1016/j.tetlet.2012.12.128
日期:2013.3
spectroscopic and colorimetric properties in CH2Cl2/CH3CN (1:2, v/v) solution for F− sensing were investigated by naked-eye, UV–vis, and fluorescence measurements. Both molecules with coplanar structure possess adjacent phenolic hydroxyl and 1,3,4-oxadiazole units, resulting in a sufficiently strong intramolecular hydrogen bond to hinder the association of most anions, but not F−, with phenolic hydroxyl hydrogen
两个新颖的阴离子传感器,4-(5-(5-(5-氯-2-羟基苯基)-1,3,4-恶二唑-2-基)苯甲酸甲酯(L1)和4-(5-(2-(2-羟基苯基)-)甲基据报道有1,3,4-恶二唑-2-基)苯甲酸酯(L2)。他们的光谱和色度特性的CH 2氯2 / CH 3 CN(1:2,V / V)与F溶液-感测,通过肉眼,紫外-可见和荧光测量的影响。具有共平面结构两者分子具有相邻的酚羟基和1,3,4-恶二唑单元,从而产生足够强的分子内氢键,阻碍最阴离子的缔合,但不是˚F -,具有酚羟基氢。他们显示从无色到在加入F的黄色,但不同的光的变化颜色的变化一样- 。