| 孙石丽,张慧,俞天智,赵玉玲.化学通报,2020,83(5):448-452. |
| 一种香豆素类荧光探针的合成及其性能研究 |
| Synthesis and Properties of A Coumarin-based Fluorescent Probe |
| 投稿时间：2019-10-29 修订日期：2019-12-08 |
| DOI： |
| 中文关键词: 香豆素 荧光探针 荧光猝灭 Co2+ Ni2+ |
| 英文关键词:Coumarin Fluorescent probe Fluorescence quenching Co2+ Ni2+ |
| 基金项目:国家自然科学基金项目（51563014）和甘肃省自然科学基金项目（1606RJZA018）资助 |
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| 中文摘要: |
| 本文设计合成了一种基于香豆素的荧光探针L，通过氢谱、质谱对其结构进行表征。该探针在DMSO/H2O（体积比9∶1）体系中对Co2+和Ni2+具有较好的选择性和灵敏度。Co2+和Ni2+的加入使得探针L的荧光发射发生猝灭，其他金属离子未对探针的荧光产生明显的影响。探针L与Co2+和Ni2+的配位比均为1：2，其对Co2+和Ni2+的检出限分别为1.002×10-7和9.78×10-6 mol/L，结合常数分别是1.06×106和9.84×105 L·mol-1。 |
| 英文摘要: |
| A coumarin-based fluorescent probe L was synthesized. Its structure was characterized by NMR and MS. The probe has high selectivity and sensitivity towards Co2+ and Ni2+ in DMSO/water (v/v=9:1) solvent. Upon the addition of Co2+ or Ni2+, the probe L displayed remarkable fluorescence quenching, which could not be interfered by other metal ions. The results showed that the coordination ratio of probe L to Co2+ and Ni2+ is 1:2. The detection limits for Co2+ and for Ni2+ are 1.002×10-7mol/L and 9.78×10-6mol/L, and the binding constants are 1.06×106 L·mol-1 and 9.84×105L·mol-1, respectively. |
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