高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (9): 1886.doi: 10.7503/cjcu20180269

• 研究论文:无机化学 • 上一篇    下一篇

铟基双金属配位聚合物的合成、 结构及荧光性质

王冬梅1(), 刘子华1, 李光华2, 刘云凌2, 李春霞1()   

  1. 1. 浙江师范大学化学与生命科学学院, 金华 321004
    2. 吉林大学无机合成与制备化学国家重点实验室, 化学学院, 长春 130012
  • 收稿日期:2018-04-09 出版日期:2018-07-30 发布日期:2018-07-30
  • 作者简介:

    联系人简介: 王冬梅, 女, 博士, 讲师, 主要从事配位聚合物研究. E-mail: dmwang@zjnu.edu.cn;李春霞, 女, 博士, 教授, 主要从事上转换纳米发光材料研究. E-mail: cxli@zjnu.edu.cn

  • 基金资助:
    浙江省自然科学基金(批准号: LQ18B010002)和吉林大学无机合成与制备化学国家重点实验室开放课题基金(批准号: 2018-35)资助.

Synthesis, Structure and Fluorescent Property of Indium-based Bimetallic Metal-organic Frameworks

WANG Dongmei1,*(), LIU Zihua1, LI Guanghua2, LIU Yunling2, LI Chunxia1,*()   

  1. 1. College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
    2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2018-04-09 Online:2018-07-30 Published:2018-07-30
  • Contact: WANG Dongmei,LI Chunxia E-mail:dmwang@zjnu.edu.cn;cxli@zjnu.edu.cn
  • Supported by:
    † Supported by the Natural Science Foundation of Zhejiang Province, China(No.LQ18B010002) and the Open Project of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, China(No.2018-35).

摘要:

采用溶剂热法合成了2个基于双金属的配位聚合物[In(OH)Cu(TBA)2(C2H6OH)]·NMF(1)和[In0.5Cd0.5(TBA)(CH3OH)][NO3]0.5·2NMF(2)(H2TBA=四氮唑羧酸). 通过X射线单晶衍射、 元素分析、 热重分析等手段对其结构和组成进行了表征. 在配合物1中, 无限的In(OH)In链和四配位金属铜离子通过线性配体连接拓展为三维中性骨架结构. 与配合物1相比, 配合物2中的金属铟和镉具有相同的配位模式, 形成了无限的In(OH)In[或Cd(OH)Cd]链次级结构单元, 通过配体桥连为三维阳离子骨架结构. 应用TOPOS 4.0软件对2个配合物进行拓扑分析, 结果表明, 配合物1为(4,4,8)连接的网络结构, 而配合物2为(4,8)连接的网络结构. 利用荧光光谱对配合物2进行了离子检测研究, 结果表明其荧光强度随着金属离子的不同而变化. 值得指出的是, 金属离子Li+使配合物2的荧光强度增强最多, 比配合物2的荧光强度提高约3.5倍, 而Fe3+却使配合物2的荧光强度几乎发生猝灭. 因此, 配合物2在金属离子Li+和Fe3+的识别上具有潜在的应用价值.

关键词: 溶剂热合成, 双金属体系, 配位聚合物, 晶体结构, 荧光性质

Abstract:

Two mixed-metal coordination polymers, [In(OH)Cu(TBA)2(C2H6OH)]·NMF(1) and [In0.5Cd0.5(TBA)(CH3OH)][NO3]0.5·2NMF(2)[H2TBA=4-(1H-tetrazol-5-yl)-benzoic acid, NMF=N-methylformamide], were synthesized under solvothermal conditions and characterized by elemental analysis, powder X-ray diffraction(PXRD), thermogravimetric analysis(TGA) and single crystal X-ray diffraction. Complex 1 has a neutral 3D framework formed from the infinite chains and four-coordinated mononuclear Cu by TBA ligands. Compared to complex 1, In and Cd centers in complex 2 have the same infinite chains, which are bridged by TBA ligands to produce a cationic 3D structure. Complex 1 possesses a (4,4,8)-connected new topology while complex 2 belongs to (4,8)-connected topology. Notably, complex 2 can be used to detect Li+ and Fe3+ through either fluorescence enhancement or quenching effect, respectively. Thus complex 2 may be considered as a potential luminescent probe for the detection of Li+ and Fe3+.

Key words: Solvothermal synthesis method, Bimetallic system, Coordination polymer, Crystal structure, Fluorescent property

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