Novel Hydrazone-Based Tripodal Sensors:Single Selective Colorimetric Chemosensor for Acetate in Aqueous Solution

摘要

A series of novel tripodal colorimetric anion sensors based on hydrazone CH=N-NH groups have been synthesized and their recognition behavior with anionic guests has been studied. In DMSO solutions,sensors 1 and 2 show colorimetric responses for F,HPO and AcO,while in DMSO/HO (9 :1,V/V) solutions,sensor 1 shows single selectivity for AcO.H NMR titration confirms that the tripodal sensors could bind anions through the collaboration of three hydrazone groups and anions residing in the central cavity of the sensors.