【摘要】 通过N-丁基-4,5-二氨基-1,8-萘酰亚胺与2-噻吩甲醛缩合,构建了一种基于分子内电荷转移（ICT）的荧光探针NAPH-1（6-氨基-2-丁基-7-（（噻吩-2-基亚甲基）氨基）-1H-苯并[de]异喹啉-1,3（2H-二酮））,其结构经¹H NMR、¹³C NMR、HRMS和元素分析确证。探究了该探针对Ag⁺选择性、荧光滴定、淬灭常数、检测限等性能。研究结果表明,NAPH-1对Ag⁺呈现出荧光淬灭效应,猝灭常数为2.96×10⁵L·mol^-1。值得关注的是,NAPH-1表现出对Ag⁺较好的选择性和响应性,检测限为0.32μmol·L^-1。水样中测定结果表明,NAPH-1可以作为一种潜在的Ag⁺检测工具。更多还原

【Abstract】 A novel fluorescent probes NAPH-1（6-amino-2-butyl-7-（（thiophen-2-ylmethylene） amino）-1H-benzo [de] isoquinoline-1,3（2H）-dione） based on intramolecular charge transfer（ICT） were constructed by the condensation of N-butyl-4,5-diamino-1,8-naphthalimide with 2-thiophenecarboxaldehyde.Their structures were confirmed by ¹H NMR,¹³C NMR,HRMS and elemental analysis.The selectivity,fluorescence titration,quenching constant and detection limit of the probe for Ag⁺ were studied.The results showed that NAPH-1 could present fluorescence quenching effect for Ag⁺ with quenching constants of 2.96×10⁵ L·mol^-1.It was noteworthy that NAPH-1 exhibited the better selectivity and responsiveness to Ag⁺with a detection limit of 0.32 μmol·L^-1.The determination of Ag+in water samples showed that the probe NAPH-1 could be used as a potential detection tool in practical applications.更多还原