高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (12): 2725-2735.doi: 10.7503/cjcu20200364

• 无机化学 • 上一篇    下一篇

辅助配体调控的荧光Cd-MOFs: 乙酰丙酮的荧光增强和Cr(Ⅵ)的荧光猝灭

咸国轩, 于玉娥, 陈玉倩, 万小雨, 王素娜(), 卢静()   

  1. 山东省化学储能与新型电池技术重点实验室, 聊城大学化学化工学院, 聊城 252059
  • 收稿日期:2020-06-18 出版日期:2020-12-10 发布日期:2020-12-09
  • 通讯作者: 王素娜,卢静 E-mail:wangsuna@lcu.edu.cn;lujing@lcu.edu.cn
  • 基金资助:
    国家自然科学基金(21571092)

Coligand Induced Luminescent Cd-MOFs: Luminescence Enhancement Toward Acetylacetone and Quenching Toward Cr2O72-

XIAN Guoxuan, YU Yu’e, CHEN Yuqian, WAN Xiaoyu, WANG Suna(), LU Jing()   

  1. Key Laboratory of Chemical Energy Storage and New Battery Technology in Shandong Province,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,China
  • Received:2020-06-18 Online:2020-12-10 Published:2020-12-09
  • Contact: WANG Suna,LU Jing E-mail:wangsuna@lcu.edu.cn;lujing@lcu.edu.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(21571092)

摘要:

将柔性苄氨基三羧酸配体5-(3-羧基-4-甲氧基苄氨基)间苯二甲酸(H3L)与硝酸镉和不同含氮配体在溶剂热条件下反应, 制得了配合物{[Cd(HL)(bpea)·H2O]·H2O·DMF}n(1)、 {[Cd(HL)(bpp)·H2O]·2H2O·DMF}n(2)和 {[Cd(HL)(dmbpy)]·DMF}n(3)[bpea=bis(4-pyridyl)ethane; bpp=1,3-bis(4-pyridyl)propane; dmbpy=5,5′-dimethyl-2,2′-bipyridine]. 3个配合物分别表现出有趣的2D→2D穿插结构和一维带状结构. 荧光性质测试结果表明, 所有配合物的荧光均可被Cr2O72?猝灭, 而在乙酰丙酮的DMF溶液中, 只有配合物1表现出明显的荧光增强. 羧酸配体的柔性、 含氮配体的类型和结构可以调控配合物的结构和荧光性能.

关键词: 配位聚合物, 荧光传感, 苄氨基羧酸配体, 乙酰丙酮, 重铬酸根

Abstract:

Three coordination complexes, {[Cd(HL)(bpea)·H2O]·H2O·DMF}n(1), {[Cd(HL)(bpp)·H2O]·2H2O·DMF}n(2) and {[Cd(HL)(dmbpy)]·DMF}n(3), were obtained from the reaction of 5-(3-carboxy-4-methoxybenzylamino) isophthalic acid(H3L) with cadmium nitrate and different nitrogen-containing ligands under solvothermal conditions, and show interesting 2D→2D penetrating and 1D ribbon structures, respectively. The results reveal that these complexes all demonstrate luminescence quenching effect toward Cr2O72?, while only complex 1 shows a significant fluorescence enhancement in DMF solution of acetylacetone. The flexibility of carboxylate ligand and types and structures of nitrogen-containing ligands play an important role in regulating the structures and fluorescence properties of complexes.

Key words: Coordination polymer, Luminescence sensing, Carboxylic acid ligand with benzylamino group, Acetylacetone, Cr2O72? (Ed.: N, K, M)

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