【摘要】 以4-氨基安替比林与2-（4-甲基吡啶）-2-异烟酸醛缩合反应得到新型安替比林衍生物（E）-1,5-二甲基-4-（（2-（4-甲基吡啶-2-基）吡啶-4-基）亚甲基氨基）-2-苯基-1,2-二氢吡唑-3-酮（L）,并对其光学、金属离子选择性识别性能和单晶结构进行了研究。发现L在水-乙醇（9∶1,V/V）溶液中,能选择性比色和肉眼识别Fe²⁺,且受常见金属离子的干扰较小。用Job法得到Fe²⁺与L的化学计量比为1∶3([FeL₃]²⁺),配合物的缔合常数为3.70×1021 L3·mol-3,检测限为0.094μmol·L^-1。结果表明,化学传感器L可作为一种有选择性、灵敏的Fe²⁺比色传感器。更多还原

【Abstract】 An aminoantipyrine based chemosensor,（E）-1,5-dimethyl-4-（（2-（4-methylpyridin-2-yl）pyridin-4-yl）methyleneamino）-2-phenyl-1,2-dihydropyrazol-3-one（L）, derived from 4-aminoantipyrine and 2-（4-methylpyridin-2-yl） isonicotinaldehyde, was synthesized and the optical and metal sensing properties were investigated. The chemosensor L showed a selective colorimetric sensing ability for Fe²⁺by changing colors from pale yellow to deep red in water-ethanol（9∶1, V/V） medium, which facilitates the ‘naked-eye’ recognition of Fe²⁺from other examined metal ions. The complex stoichiometry of Fe²⁺to L(1∶3, [FeL₃]²⁺) was obtained by Job′s method. The association constant was determined to be 3.70×1021 L3·mol^-3. The present results indicate that the chemosensor L could be used as a selective, sensitive colorimetric sensor for Fe²⁺. CCDC: 1817471, L.更多还原