期刊信息

  • 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
  • 主办： 河北师范大学
  • ISSN： 1000-5854
  • CN： 13-1061/N
  • 中国科技核心期刊
  • 中国期刊方阵入选期刊
  • 中国高校优秀科技期刊
  • 华北优秀期刊
  • 河北省优秀科技期刊

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一种简单高效的铝离子化学传感器

  • 渤海大学 化学化工学院, 辽宁 锦州 121013
  • DOI： 10.13763/j.cnki.jhebnu.nse.2018.05.008

A Simple and Efficient Chemical Sensor for Identifying Al3+ Ions

摘要/Abstract

摘要：

利用2-羟基-1-萘甲醛和2，6-吡啶二甲酰肼反应生成了一种简单高效的荧光探针L，通过1HNMR表征了其结构.在DMF和水（体积比为1：1）的体系下，L能够高选择性识别铝离子，表现出明显的荧光增强.通过对10μmol/L的受体进行滴定实验，测得探针L对Al3+具有较低的检测限（10.64μmol/L），表明探针L检测铝离子具有较高的灵敏度.当荧光发射强度出现了转折点时探针L的摩尔数为0.66，证明探针L与Al3+的结合比为1：2，结合常数为2.951×109L/mol.

Abstract：

A simple and efficient fluorescent probe L was synthesized by the reaction of 2-hydroxy-1-naphthaldehyde with pyridine-2,6-dicarbohydrazide.The structure of L was characterized by 1HNMR.The L used as a chemical sensor displays an highly selective recognition for Al3+ amongst those tested metal ions.Which has a significant fluorescence enhancement in the mixed DMF and water (1:1).A lower detection limit (10.64μmol/L) for Al3+ was measured based on 10μmol/L receptor titration experiment,indicating the probe L has the higher sensitive recognition for Al3+ than those tested metal ions.When the molar ratio of probe L is close to 0.66,the fluorescence emission intensity shows a turning point.The combination ratio of probe L with Al3+ is 1:2,and the corresponding binding constant is 2.951×109L/mol.

关键词

关键词： 2-羟基-1-萘甲醛 ; 2,6-吡啶二甲酰肼 ; Al3+ ; 荧光增强
Key words： 2-hydroxy-1-naphthaldehyde ; pyridine-2,6-dicarbohydrazide ; Al3+ ; fluorescence enhancement

参考文献 26

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