影像科学与光化学 ›› 2016, Vol. 34 ›› Issue (6): 513-525.DOI: 10.7517/j.issn.1674-0475.2016.06.513

• 论文 • 上一篇    下一篇

基于聚集诱导发光特性的荧光探针对汞离子的点亮型检测

潘小玲, 张亚会, 孔令伟, 石建兵, 佟斌, 董宇平   

  1. 北京理工大学 材料科学与工程学院 北京市结构可控先进功能材料与绿色应用重点实验室, 北京 100081
  • 收稿日期:2016-10-02 出版日期:2016-11-15 发布日期:2016-11-15
  • 通讯作者: 石建兵, 董宇平
  • 基金资助:

    国家自然科学基金(973项目2013CB834704;51673024;21474009;51328302)资助

A “Turn-on” Fluorescent Chemosensor with the Aggregation-induced Emission Characteristic for High-selective Detection of Hg2+

PAN Xiaoling, ZHANG Yahui, KONG Lingwei, SHI Jianbing, TONG Bin, DONG Yuping   

  1. Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
  • Received:2016-10-02 Online:2016-11-15 Published:2016-11-15

摘要:

首先通过二溴六苯基丁二烯(HPB-Br)与4-乙烯基吡啶的Heck反应,获得含有两个吡啶基团的六苯基丁二烯(HPB-Py),再用碘甲烷甲基化得到含有双甲基吡啶碘盐的目标产物:六苯基-1,3-丁二烯衍生物(HPB-PyM)。作为HPB-PyM的前体化合物,HPB-Br和HPB-Py显示出优异的聚集诱导发光(AIE)特性。而HPB-PyM则呈现出聚集诱导猝灭(ACQ)特性,其固体呈橙红色荧光,发射波长λem=605 nm。当有汞离子存在的条件下,HPB-PyM基于AIE机制被点亮,并对Hg2+的检测具有响应速度快、灵敏度高和选择性强的特点,线性检测的最低限为4.153 μmol/L,证明HPB-PyM是一种新型“点亮”汞离子探针。

关键词: 六苯基-1,3-丁二烯衍生物, 高选择性, 检测汞离子, "点亮"荧光响应

Abstract:

A hexaphenyl-1,3-butadiene derivative containing methylpyridinium moiety, 4,4'-((1E,1'E)-(((1E,3E)-1,2,3,4-tetraphenylbuta-1,3-diene-1,4-diyl)bis(1,4-phenylene))bis(ethene-1,2-diyl))bis(N-methylpyridinium) iodide (HPB-PyM), was firstly synthesized through Heck reaction of HPB-Br with 4-vinylpyridine and subsequent methylation with iodomethane. As the precursors of HPB-PyM, HPB-Br and HPB-Py showed excellent aggregation-induced emission characteristic. In contrast, HPB-PyM exhibited orange emission (λem=605 nm) in the solid state with aggregation-caused quenching (ACQ) characteristic. Moreover, the fluorescence of HPB-PyM via AIE mechanism could be lightened and significantly enhanced by Hg2+ ions. As a "turn on" probe, HPB-PyM not only exhibited a rapid, sensitive, and selective response towards Hg2+ but also achieved linear and colorimetric detection for Hg2+ with a detection limit of 4.153 μmol/L.

Key words: hexaphenyl-1,3-butadiene derivative, high-selective, detection of Hg2+, "turn-on", fluorescent response