应用化学 ›› 2009, Vol. 26 ›› Issue (11): 1253-1258.

• 研究论文 •    下一篇

间苯二甲酰腙分子钳的合成及阴离子识别研究

张有明,王爱霞,冷艳丽,王雅琳,魏太保*   

  1. (西北师范大学化学化工学院,甘肃省高分子材料重点实验室 兰州 730070)
  • 收稿日期:2008-09-02 修回日期:2009-05-27 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 魏太保,男,教授,博士生导师; E-mail:weitaibao@126.com; 研究方向:超分子化学
  • 基金资助:
    国家自然科学基金(20671077)甘肃省自然科学基金(3ZS061-A25-027,2008-1-164)资助项目

1,3-benzyldiacyl hydrazone Tweezers Receptors: Synthesis and Anions Recognition Properties

ZHANG You-Ming, WANG Ai-Xia, LENG Yan-Li, WANG Ya-Lin, WEI Tai-Bao*   

  1. (College of Chemistry and Chemical Engineering,Gansu Key Laboratory of Polymer Materials,Northwest Normal University,Lanzhou 730070)
  • Received:2008-09-02 Revised:2009-05-27 Published:2009-11-10 Online:2009-11-10

摘要:

设计合成了3种新型间苯二甲酰腙类化合物,利用UV-Vis及1H NMR考察了其与F-、Cl-、Br-、I-、CH3COO-、HSO4-、H2PO4-、ClO4-阴离子的相互作用。结果表明,主体分子4a(双对硝基苯并呋喃甲醛间苯二甲酰腙)在DMSO溶液中对F-和CH3COO-有显著识别效果,溶液颜色由黄色变为深黄色和棕红色。通过1H NMR滴定及质子溶剂效应进一步证明,主体分子与阴离子之间是以氢键作用方式相结合。Job曲线表明,主客体间形成1:1型氢键络合物。基于实验结果,探讨了主客体间形状和大小匹配对识别能力的影响以及主客体之间的识别模式。

关键词: 分子钳,阴离子识别,紫外-可见吸收光谱,间苯二甲酰腙

Abstract:

Three novel 1,3-benzyldiacyl hydrazone derivatives(4a~4c) have been designed and synthesized in the paper.The binding properties of the receptors with anions such as F-, Cl-, Br-, I-, CH3COO-, HSO4-, H2PO4- and ClO4- in DMSO were investigated by UV-Vis and 1H NMR spectroscopy. As a result, receptor 4a(1,3-benzyldi (4-nitropheyl-2-furfuraldehyde) methacylhydrazone) can recognize anions through hydrogen binding in DMSO solutions. A clear color chang was observed from yellow to dark yellow and pale red upon addition of F- and CH3COO- . 1H NMR titrations and salvation effect confirm hydrogen bonding interaction between the receptors and anions. Job curve indicates that a 1:1 stoichiometry complex is formed between the receptors and the two anions. Based on the above results, the recognition binding mode were discussed. molecules. The molecular recognition ability is discussed in terms of the size and shape-fit as well as the recognition model between host and guest molecules.

Key words: molecular tweezer,anion recognition,UV-Vis absorption spectrum,benzyldiacyl hydrazone

中图分类号: