新型含酚羟基Schiff碱化合物的比色阴离子传感器

A Novel and Simple Colorimetric Anion Sensor Based on Schiff-Base Bearing Phenolic Hydroxy Group

设计合成了一种含酚羟基Schiff碱类受体1-羟基-4-氯-二苯甲酮-2,4-硝基苯腙受体分子1.利用紫外-可见吸收光谱、荧光光谱考察了其与AcO-,H 2 PO-4,F-,Cl-,Br-,I-等阴离子的作用.当加入AcO-,F-和H 2 PO-4时,导致紫外光谱的可见光区明显变化(大约130 nm红移),同时伴随着从亮黄色到粉红色的"裸眼"颜色变化.通过在DMSO-d6核磁滴定实验进一步研究了探针1和F-相互作用的本质.

A new anion receptor bearing phenolic hydroxy group based on Schiff base 1-hydroxy-4-chlo-ro-2,4-nitro-phenylhydrazonocarboxy（1） was designed and synthesized.The binding properties of the re-ceptor with anions such as AcO-,,F-,Cl-,Br-,I-were investigated by UV-Vis and fluorescent titrations.Addition of AcO-,,F-results in a noteworthy change in the visible region of spectrum（approximately 130 nm red shift）,accompanied by visible color changes from light yellow to pink,which can be detected by the ＂naked-eye＂.The further insights to the nature of interactions between the sensor 1 and F-were investigated by 1H NMR titration experiments in DMSO-d6.