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首页> 外文期刊>RSC Advances >Facile construction of a hyperbranched poly(acrylamide) bearing tetraphenylethene units: a novel fluorescence probe with a highly selective and sensitive response to Zn2+
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Facile construction of a hyperbranched poly(acrylamide) bearing tetraphenylethene units: a novel fluorescence probe with a highly selective and sensitive response to Zn2+

机译：高抗原聚（丙烯酰胺）轴承四苯基乙烯单元的舒适构造：一种新型荧光探针，具有高度选择性和对Zn2 +的敏感反应

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摘要

Thermo-responsive hyperbranched copoly(bis(N,N-ethyl acrylamide)/(N,N-methylene bisacrylamide)) (HPEAM-MBA) was synthesized by using reversible addition-fragmentation chain-transfer polymerization (RAFT). Interestingly, the zinc ion (Zn2+) was found to have a crucial influence on the lowest critical solution temperature (LCST) of the thermo-responsive polymer. The tetraphenylethylene (TPE) unit was then introduced onto the backbone of the as-prepared thermo-responsive polymer, which endows a Zn2+-responsive "turn-off" effect on the fluorescence properties. The TPE-bearing polymer shows a highly specific response over other metal ions and the "turn-off" response can even be tracked as the concentration of Zn2+ reduces to 2 x 10(-5) M. The decrement of fluorescence intensity was linearly dependent on the concentration of Zn2+ in the range of 4-18 mu mol L-1. The flexible, versatile and feasible approach, as well as the excellent detection performance, may generate a new type of Zn2+ probe without the tedious synthesis of the moiety bearing Zn2+ recognition units.
机译：通过使用可逆添加 - 碎片链转移聚合（RAFT）合成热响应性超支化共g（双（N，N-丙烯酰胺）/（N，N-亚甲基双丙烯酰胺））（HPeam-MBA）。有趣的是，发现锌离子（Zn2 +）对热响应聚合物的最低临界溶液温度（LCST）具有至关重要的影响。然后将四苯基乙烯（TPE）单元引入到制备的热响应聚合物的骨架上，其赋予荧光性质的Zn2 + -Responsive“关断”效应。轴承聚合物表明，在其他金属离子上具有高度比响应，甚至可以被跟踪“关断”响应，因为Zn2 +的浓度降低至2×10（ - 5）米。荧光强度的衰减线性依赖性Zn2 +浓度为4-18μmoll-1。柔性，通用和可行的方法以及出色的检测性能，可以产生新型的Zn2 +探针，而没有轴承Zn2 +识别单元的繁琐合成。

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  • 来源
    《RSC Advances》 |2018年第11期|共8页
  • 作者

    Liu Xuejing; Zhang Yuangong; Hao Haijing; Zhang Wanju; Bai Libin; Wu Yonggang; Zhao Hongchi; Zhang Hailei; Ba Xinwu;

  • 作者单位

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

    Huanggang Normal Univ Hubei Key Lab Proc &

    Applicat Catalyt Mat Huanggang 438000 Hubei Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

    Hebei Univ Coll Chem &

    Environm Sci Baoding 071002 Hebei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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