应用化学 ›› 2017, Vol. 34 ›› Issue (4): 486-488.DOI: 10.11944/j.issn.1000-0518.2017.04.160366

• 研究论文 • 上一篇    

系列Ln(Ⅲ)配聚物的合成、结构及近红外发光性能

胡晓双,王艳梅,王岩,李艳莹,杨艳红,迟玉贤(),金晶,牛淑云   

  1. 辽宁师范大学化学化工学院 辽宁 大连 116029
  • 收稿日期:2016-09-12 接受日期:2016-12-05 出版日期:2017-03-31 发布日期:2017-03-31
  • 通讯作者: 迟玉贤
  • 基金资助:
    国家自然科学基金资助项目(21133005);辽宁省教育厅一般项目(L2014424,L2011193)

Syntheses, Structures and Near Infrared Luminescence of a Series of Ln(Ⅲ) Coordination Polymers

HU Xiaoshuang,WANG Yanmei,WANG Yan,LI Yanying,YANG Yanhong,CHI Yuxian(),JIN Jing,NIU Shuyun   

  1. School of Chemistry and Chemical Engineering,Liaoning Normal University,Dalian,Liaoning 116029,China
  • Received:2016-09-12 Accepted:2016-12-05 Published:2017-03-31 Online:2017-03-31
  • Contact: CHI Yuxian
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21133005), Scientific Research Project of Liaoning Provincial University(No.L2014424, No.L2011193)

摘要:

通过水热反应合成5种结构新颖的配聚物:{[Ln2(1,3-bdc)3(H2O)4](DMF(H2O}n[Ln=Pr(1),Nd(2),Gd(3)]和{[Ln4(1,3-bdc)6(H2O)4(DMF)](DMF(2H2O}n[Ln=Er(4),Ho(5)](1,3-bdc:间苯二甲酸,DMF:N,N-二甲基酰胺)。 通过单晶X射线衍射、红外光谱、紫外-可见-近红外(UV-Vis-NIR)光谱、荧光光谱等技术手段对产物的结构和性能进行了表征。 结果表明,配聚物1~3是同构的,属单斜晶系,P2(1)/n空间群;配聚物4、5是同构的,属三斜晶系,P-1空间群。 在晶体中,间苯二甲酸根采用多样的配位模式,使配聚物呈现多维的结构。 除配聚物4,其余均呈现Ln(Ⅲ)的特征NIR发光,并与其UV-Vis-NIR吸收光谱相关联。

关键词: Ln(Ⅲ)配聚物, 晶体结构, 近红外发光

Abstract:

Five novel Ln(Ⅲ) coordination polymers, {[Ln2(1,3-bdc)3(H2O)4](DMF(H2O}n(Ln=Pr(1), Nd(2), Gd(3)) and {[Ln4(1,3-bdc)6(H2O)4(DMF)](DMF(2H2O}n(Ln=Er(4), Ho(5))(1,3-bdc=isophthalic acid, DMF=N,N-dimethyl formamide), have been synthesized by hydrothermal methods and characterized by single-crystal X-ray diffraction, infrared spectroscopy(IR), ultraviolet-visible-near infrared(UV-Vis-NIR) and fluorescence spectroscopy. The results show that coordination polymers 1 to 3 are isomorphous and crystallized in the monoclinic with space group P2(1)/n, and coordination polymers 4 and 5 are isomorphous and belong to the triclinic system with space group P-1. Polymers present multidimensional structures due to versatile coordination modes of 1,3-bdc2- in crystals. Except for coordination polymer 4, others exhibit NIR luminescent properties that are associated with UV-Vis-NIR absorption spectra.

Key words: Ln(Ⅲ) coordination polymer, crystal structure, near infrared luminescence