调节S和N活性位点的协调聚合物,以实现增强的Hg2+传感性能
Jinfang Zhang1, Yinlong Yue1, Xingyu Tao1
1International Joint Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Inorganic chemistry
|March 29, 2025
概括
具有硫和位的新协调聚合物 (CP) 提供了增强的传感能力. 这些新型的富含S和N的CP显示出Hg2+离子的卓越"启动"光检测.
科学领域:
- 材料化学 材料化学
- 协调聚合物的聚合物
- 化学传感器 化学传感器
背景情况:
- 开发具有高传感性能的协调聚合物 (CP) 是至关重要的.
- 在CP中的活性硫 (S) 和 (N) 位点可以增强感知能力.
- 现有的CP传感器往往缺乏足够的灵敏度或对特定分析物的选择性.
研究的目的:
- 合成新的富含S和N的基于铜的协调聚合物 (Cu-CPs).
- 调查这些Cu-CPs的结构特征和传感特性.
- 通过光增强来探索Hg2+检测的机制.
主要方法:
- 三种新的Cu-CPs的合成: [Cu(L) ((SCN) 2·2DMF]n (1), [Cu(L) ((SCN) ·2DMF]n (2), 和 [Cu(L) ((CN) ·2DMF]n (3) 使用9,10-bis (((di(pyrimidin-5-yl) methylene) -9,10-dihydroanthracene (L) 和SCN-/CN-连接物.
- 合成的Cu-CPs的结构特征,揭示了1D,2D和3D网络架构.
- 对Cu-CPs 1-3对Hg2+离子的光感应性能的评估.
主要成果:
- Cu-CPs 1和2,具有非协调的S和N活性位点,表现出用于检测Hg2+的"启动"光反应.
- 只有N活性位点的Cu-CP3显示出对Hg2+的负感应反应.
- Cu-CPs 1和2显示出Hg2+检测的超高灵敏度和选择性,其中CP 1的表现优于CP 2.
结论:
- 合成的富含S和N的Cu-CPs是首个用于传感应用的产品.
- 这些CP具有出色的"启动"光传感能力,可检测Hg2+离子.
- 该研究提供了对开发的基于CP的传感器的传感机制和性能差异的详细见解.
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