一种双腙受体的合成及阴离子识别性能研究

Synthesis of bishydrazone receptor and its anion recognition properties

设计合成了一种含双腙类阴离子受体1(5-甲基双水杨醛-2,4-二硝基苯腙)。用紫外-可见吸收光谱、荧光光谱考察了其与AcO-,H2PO4-,F-,Cl-,Br-和I-阴离子的作用。当加入AcO-、F-和H2PO4-时,受体分子1的吸收光谱发生明显的红移,与此同时溶液颜色由浅粉色变为紫色,而加入其他阴离子则无变化。通过在DMSO-d6核磁滴定实验进一步研究受体1和F-相互作用的本质。

A bishydrazone anion sensor 1 （5-methyl-bissalicylaldehyde-2, 4-nitrophenylhydrazone）, was designed and synthesized. The binding properties of the receptor with anions such as AcO^-, H2PO4^-, F^-, Cl^-, Br^-and I^- were investigated by UV-Vis and fluorescent titrations. Upon addition of AcO^-, H2PO4^-, F^-, the receptor exhibited a red shift in UV-vis spectrum, accompanied by visible color changes from light pink to purple. However, no obvious color changes were observed on addition of the other anions tested. The further insights to the nature of interactions between the probe 1 and F- were investigated by ^1HNMR titration.