应用化学 ›› 2019, Vol. 36 ›› Issue (4): 459-464.DOI: 10.11944/j.issn.1000-0518.2019.04.180264

• 研究论文 • 上一篇    下一篇

一维发光镉配位聚合物的合成、晶体结构及识别性能

唐静a,林肖漪b,周文艳c,黄秋颖a*()   

  1. a河南工业职业技术学院应用化学工程系 河南 南阳 473009
    b大连理工大学化学工程学院 辽宁 大连 116024
    c郑州大学化学与分子工程学院 郑州 450001
  • 收稿日期:2018-08-14 接受日期:2018-10-26 出版日期:2019-04-01 发布日期:2019-04-02
  • 通讯作者: 黄秋颖
  • 基金资助:
    国家自然基金(J1210060)河南省科技厅基础与前沿技术研究项目(162300410206)和河南省教育厅基础与前沿技术研究计划项目(16B150002)资助

Synthesis, Crystal Structure and Recognition Properties of One-Dimensional Luminescent Cd Coordination Polymer

TANG Jinga,LIN Xiaoyib,ZHOU Wenyanc,HUANG Qiuyinga*()   

  1. aDepartment of Chemical Engineering,He'nan Polytechnic Institute,Nanyang,He'nan 473009,China
    bDepartment of Chemical Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China
    cCollege of Chemistry and Molecular Engineering,Zhengzhou University,Zhengzhou, 450001,China
  • Received:2018-08-14 Accepted:2018-10-26 Published:2019-04-01 Online:2019-04-02
  • Contact: HUANG Qiuying
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.J1210060), the Henan Province Foundation and Advanced Technology Research Project(No.162300410206), the Foundation of Henan Educational Committee(No.16B150002)

摘要:

采用芳香取代的咪唑二羧酸配体2-(对氰基)苯基-4,5-咪唑二羧酸(p-CNPhH3IDC) ,在含氮螯合配体 2,2'-联吡啶(2,2'-bipy)的存在下,利用水热反应,制备了一个具有混合配体的一维链状配位聚合物:[Cd(p-CNPhHIDC)(2,2'-bipy)]n(1)。 通过元素分析、傅里叶变换红外光谱仪以及单晶X射线衍射等技术手段研究了配位聚合物1的结构和性能。 结果表明,该配位聚合物稳定性较好,在231.6 ℃前结构稳定。 经乙睛、甲醇、乙醛等溶剂浸泡后,配位聚合物1的荧光强度发生了一定程度的减弱(乙醛和CH2Cl2)或增强(DMF、硝基苯、丙酮),仅有吡啶溶剂使其荧光发射波长发生了60 nm的蓝移,显示其对吡啶有比较好的识别作用。

关键词: Cd-聚合物, 咪唑二羧酸, 晶体结构, 识别性能

Abstract:

By reaction of an aryl substituted imidazole dicarboxylate ligand 2-(4-cyanophenyl)-1H-imidazole-4,5-dicarboxylic acid(p-CNPhH3IDC) with cadmium nitrate, in the presence of N-containing chelate ligand, 2,2'-bipyridine(2,2'-bipy), a one-dimensional chain-like coordination polymer, [Cd(p-CNPhHIDC)(2,2'-bipy)]n(1) with mixed ligands was prepared hydrothermally. The structure and properties of the coordination polymer were studied by elemental analysis, Fourier transform infrared spectrometer and single crystal X-ray diffraction. The results show that the coordination polymer has good thermal stability under 231.6 ℃. After being soaked in acetonitrile, methanol, acetaldehyde and other solvents, the fluorescence intensity of coordination polymer 1 was weakened(aldehyde, CH2Cl2) or enhanced(DMF, nitrobenzene and acetone) to a certain extent. A 60 nm blue shift in its fluorescence emission, in pyridine indicated a good identification effect on pyridine by this polymer.

Key words: Cd-polymer, imidazole dicarboxylate, crystal structure, recognition properties