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含二茂铁盘状主体的阴离子识别与电化学传感 被引量:1

Anion Recognition and Electrochemical Sensing of Podands Containing Ferrocenyl Species
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摘要 合成了两个新的具有两条或三条苯并咪唑阳离子臂的盘状主体分子1和2,利用核磁滴定和微分极谱测定了主体分子对氯、溴、碘等阴离子的识别性能和电化学响应.结果表明,主体1和2与客体阴离子之间形成(C(H)+…X-氢键作用,阴离子位于主体构象变化所围成的锥形空穴中,形成1∶1型的超分子配合物.识别阴离子时多重氢键作用使主体分子1表现出显著的化学位移和电化学响应. Benzene-based bipodal and tripodal electrochemical-responsive receptors 1 and 2 with ferrocenyl arms comprising benzoimidazolium moieties were synthesized and structurally characterized. The interactions between receptors and anions such as Cl^- , Br and I^- were investigated by ^1 H NMR titration in d6-DMSO and differential pulse voltammetry. Results indicated that the recognition of the host is introduced by the presence of directional hydrogen-bonding (C(H) ~ functionality as well as the electrostatic force between the benzoimidazolium moieties and the anion. The 1 : 1 model supramolecular complex is formed between host and guest molecule. Multiform hydrogen bonds are important for the receptor 1 exhibiting more efficient binding electrochemical signal transduction.
出处 《河南大学学报(自然科学版)》 CAS 北大核心 2008年第3期251-255,共5页 Journal of Henan University:Natural Science
基金 国家自然科学基金(20701012) 教育部科学技术研究重点项目(207068) 河南大学自然科学基金资助项目(06YBZR017)
关键词 阴离子识别 主体 氢键 电化学 anion recognition receptor hydrogen bonding electrochemistry
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参考文献16

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二级参考文献28

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