and F− anion in a mixture of solvent, CH3CN:CH3OH (8:2, v/v). The receptor S3 possesses high sensitivity and selectivity in comparison with the receptors S1 and S2. The binding constant and limit of detection of the receptors with sensed cations and anion showed high sensitivity and selectivity towards Co2+ cation with order of magnitude 6, greater than the other sensed cations. In addition, the receptors
三种双功能
化学传感器,2-(4-(diethylamino)-2-hydroxybenzylidene)hydrazinecarboxamide (S1), 2-(4-(diethylamino)-2-hydroxybenzylidene)hydrazinecarbothioamide (S2) and 2-(4-(diethylamino)-2 -hydroxybenzylidene) -N - methylhydrazinecarbothioamide (S3) 已被设计和合成用于在室温下识别溶液中的无机阳离子和阴离子。受体S2的结构通过单晶X射线衍射技术证实,其在单斜晶系P2 1/n空间群中结晶。阳离子(Mn 2+、Fe 2+、Co 2+、Ni 2+、Cu 2+、Zn 2+和Pb 2+ )的选择性和灵敏度) 和阴离子(F -、Cl -、Br -、I -、HSO 4 -和 H 2 PO