物理化学学报 >> 2012, Vol. 28 >> Issue (02): 265-272.doi: 10.3866/PKU.WHXB201111251

热力学,动力学和结构化学 上一篇    下一篇

Salen型化合物的合成、表征及性质

刘佳, 郭莉芹, 张晓红, 阮文娟, 朱志昂   

  1. 南开大学化学学院, 天津 300071
  • 收稿日期:2011-09-08 修回日期:2011-11-21 发布日期:2012-01-11
  • 通讯作者: 阮文娟 E-mail:wjruan@nankai.edu.cn
  • 基金资助:

    国家自然科学基金(20671053)资助项目

Synthesis, Characterization and Properties of Salen-Type Complexes

LIU Jia, GUO Li-Qin, ZHANG Xiao-Hong, RUAN Wen-Juan, ZHU Zhi-Ang   

  1. College of Chemistry, Nankai University, Tianjin 300071, P. R. China
  • Received:2011-09-08 Revised:2011-11-21 Published:2012-01-11
  • Contact: RUAN Wen-Juan E-mail:wjruan@nankai.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20671053).

摘要: 设计合成了两种新型Salen 配体H2L1 (N,N'-3-二甲氧基-邻羟苯亚甲基-4,5-二甲氧基-1,2-苯二胺)、H2L2(N,N'-3-二甲氧基-邻羟苯亚甲基-4,5-二硝基-1,2-苯二胺)及相应的镍、铜、锌金属配合物ML1、ML2 (M=Ni, Cu,Zn), 并分别采用核磁共振(1H NMR)波谱、紫外-可见(UV-Vis)吸收光谱、红外(IR)光谱、质谱(MS)和元素分析进行了表征. 探究了配体及其配合物的荧光性质. 研究发现, 与H2L1相比, 配体H2L2由于引入强的吸电子基团―NO2, 其荧光强度减弱. 相对于配体, 锌离子的配位则导致其配合物的荧光强度增强, 而镍和铜离子的嵌入则使得配合物ML1、ML2 (M=Ni, Cu)荧光猝灭. 对电化学性质的研究表明, CuL1的氧化还原过程为准可逆的单电子过程; 与H2L2相比, 配体H2L1由于引入强的给电子基团―OCH3, 其溶液的导电性降低.

关键词: Salen型化合物, 合成与表征, 谱学性质, 电化学性质, 荧光性质

Abstract: Two new Salen ligands H2L1 (N,N'-bis(3-dimethoxy-salicylidene)-4,5-dimethoxy-1,2- phenylenediamine) and H2L2 (N,N'-bis(3-dimethoxy-salicylidene)-4,5-dinitryl-1,2-phenylenediamine), and their nickel, copper, and zinc complexes ML1, and ML2 (M=Ni, Cu, Zn) were synthesized. The compounds synthesized were characterized by 1H-nuclear magnetic resonance (1H NMR), ultraviolet-visible absorption spectrometry (UV-Vis), infrared (IR) spectrometry, mass spectroscopy (MS), and elemental analysis. The fluorescence properties of the complexes were also studied. The fluorescence intensity of ligand H2L2 was lower than that of ligand H2L1, because of the introduction of the strong electron-withdrawing group, ―NO2. Moreover, the fluorescence intensities of the zinc complexes are greater than those of the ligands; however the fluorescence is quenched upon complexing of nickel or copper ions. In addition, the cyclic voltammetry shows that the redox process in CuL1 was a one-electron quasi-reversible charge-transfer. Because of the introduction of the electron-donating group ―OCH3, the solution conductivity of ligand H2L1 was lower than that of H2L2.

Key words: Salen-type complex, Synthesis and characterization, Spectrum property, Electrochemical property, Fluorescence property

MSC2000: 

  • O641