大学化学 >> 2022, Vol. 37 >> Issue (5): 2109097.doi: 10.3866/PKU.DXHX202109097

所属专题： 第2届全国大学生化学实验创新设计竞赛

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利用金属多氮唑框架材料封装荧光分子实现对挥发性有机化合物的传感

范晓琳, 黄颂华, 陈铿, 詹顺泽, 周浩龙(), 黄晓春()   

  • 收稿日期:2021-09-28 录用日期:2021-11-04 发布日期:2022-03-10
  • 通讯作者: 周浩龙,黄晓春 E-mail:hlzhou@stu.edu.cn;xchuang@stu.edu.cn
  • 作者简介:Email: xchuang@stu.edu.cn (黄晓春)
    Email: hlzhou@stu.edu.cn (周浩龙)
  • 基金资助:
    国家自然科学基金(22001160)

Encapsulation of Fluorescent Molecules in Metal-Azolate Frameworks for Volatile Organic Compound Sensing

Xiaolin Fan, Songhua Huang, Keng Chen, Shunze Zhan, Haolong Zhou(), Xiaochun Huang()   

  • Received:2021-09-28 Accepted:2021-11-04 Published:2022-03-10
  • Contact: Haolong Zhou,Xiaochun Huang E-mail:hlzhou@stu.edu.cn;xchuang@stu.edu.cn

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摘要：

通过选择不同的溶剂/模板剂，制备出具有sql、SOD、RHO等三种不同拓扑网络结构的苯并咪唑锌框架，并探究荧光分子苝在这三种金属多氮唑框架材料中的封装情况，以实现对挥发性有机化合物的荧光传感。该实验利用X射线粉末衍射法鉴定产物的结构和纯度，通过荧光光谱法对反应产物发光性能进行分析，利用紫外-可见光谱法测定苝的封装量。该实验的操作简单，重现性好，反应快速，条件温和、绿色，几乎不产生会造成环境污染的副产物。因此，该实验作为本科教学实验可实施性强。在三种金属多氮唑框架材料的合成、表征、性能探究的实验流程中，加入平行对比实验，能加深学生对配位化学合成理论与多孔材料性能的理解，也能培养学生对实验数据的分析能力。此外，将多孔框架材料的合成与荧光分子的封装相结合实现荧光传感效果，能提升实验的趣味性，有利于激发学生对材料性能与应用的探索精神。

关键词: 苯并咪唑锌框架, 快速合成, 模板剂, 苝, 荧光传感

Abstract:

Three zinc benzimidazolate frameworks with different topological network structures, sql, SOD, and RHO, were prepared using different solvents and templates. Encapsulation of perylene in these three metal-azolate frameworks was explored to prepare novel porous materials with unique luminescent and fluorescent sensing properties. Product purities were determined using powder X-ray diffraction, and the luminescent properties were analyzed via fluorescence spectrometry. The loading amount of perylene was determined using UV-Vis spectroscopy. Advantages of this experimental design include a simple synthesis, high success rate, short reaction time, mild reaction conditions, and environmentally friendly by-products, indicating high feasibility as a teaching experiment for undergraduates. Through the preparation, characterization, and application of metal-azolate framework materials, students can easily understand coordination chemistry synthesis and porous material characteristics. Additionally, the combination of the synthesis of porous framework materials and the packaging of fluorescent molecules may make the experiment more interesting and inspire students to explore material performance and applications.

Key words: Zinc benzimidazole framework, Rapid synthesis, Template, Perylene, Fluorescence sensing

MSC2000: 

  • G64