Synthesis of Benzimidazolium-urea Receptors and Their Anion Recognition Properties

doi:10.7503/cjcu20111165

Abstract

Abstract:

Due to the fundamental roles that anions play in a wide range of chemical and biological processes, numerous efforts have been devoted to the design of receptors capable of selectively binding and sensing anions. Herein, three benzimidazolium-urea receptors were designed and synthesized. The interaction between these receptors and various anions(F^-, Cl^-, Br^-, I^-, CH₃COO^-, HSO₄^-, H₂PO₄^-) were studied by UV-Vis spectrum, fluorescence spectrum and ¹H NMR. The results demonstrate that the receptors and anions form 1:1 complex, and the receptors display a strong (C-H)⁺…X^-, N-H…X hydrogen bonds and charge-charge interactions in anion recognition.

Key words: Benzimidazolium, Urea, Anion receptor, Anion recognition, Ionic liquid

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DONG Zhi-Yun, JIANG Xiao-Zhi, ZHANG Da-Wei, GAO Guo-Hua. Synthesis of Benzimidazolium-urea Receptors and Their Anion Recognition Properties[J]. Chem. J. Chinese Universities, 2012, 33(10): 2256.

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Synthesis of Benzimidazolium-urea Receptors and Their Anion Recognition Properties

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