N-(8-对氨基苯磺酰)胺基喹啉的合成及其荧光性质的研究

Study on synthesis and fluorescent properties of N-(8-quinolyl)-p-aminobenzenesulfonamide

合成了一种Zn2+荧光探针N-(8-对氨基苯磺酰)胺基喹啉(HQAS),探讨了HQAS与Zn2+的键合比和配位模式,以及不同pH,其它金属离子对Zn2+检测的影响。研究结果显示:该探针与Zn2+形成配合物,使其荧光增强,键合比为2:1,pH 7.2时荧光强度增大9.4倍。大多数金属离子几乎不干扰Zn2+的检测,Cu2+和Ni2+猝灭HQAS的荧光。

N-（8-quinolyl）-p-aminobenzenesulfonamide（HQAS）,one fluorescent probe for Zn2＋,was synthesized,and stoichiometry,complex mode and fluorescent properties of combination of HQAS and Zn2＋ were discussed.The result showed that the fluorescent probe could form a complex with zinc ion to enhance fluorescence intensity,and the molar proportion of Zn2＋ and HQAS was 1：2.In addition,most metal ions showed little interference to the fluorescence response of Zn2＋ except Cu2＋ and Ni2＋.