Recognition and sensing of anions through synergistic effects using simple benzimidazolium-urea receptors  

作　　者：DONG ZhiYun GAO GuoHua 

机构地区：[1]Shanghai Key Laboratory of Green Chemistry and Chemical Processes,Department of Chemistry,East China Normal University,Shanghai 200062,China

出　　处：《Chinese Science Bulletin》2012年第11期1266-1274,共9页

基　　金：supported by the National Natural Science Foundation of China (21072061);the Shanghai Leading Academic Discipline Project (B409)

摘　　要：Benzimidazolium-based receptors 1-3 were designed and synthesized. On the basis of fluorescence, UV-Vis, and 1H NMR spectroscopic studies, and X-ray single crystal structure analysis, it was confirmed that the receptor 1 displays strong (C-H)+···X, N-H···X hydrogen bonds and charge-charge interactions with anions. More importantly, these investigations demonstrated that the charged (C-H)+ benzimidazolium and urea moieties play a synergistic role in anion recognition.Benzimidazolium-based receptors 1-3 were designed and synthesized. On the basis of fluorescence, UV-Vis, and ~H NMR spec- troscopic studies, and X-ray single crystal structure analysis, it was confirmed that the receptor 1 displays strong （C-H）^＋…X, N-H…X hydrogen bonds and charge-charge interactions with anions. More importantly, these investigations demonstrated that the charged （C-H）^＋ benzimidazolium and urea moieties play a synergistic role in anion recognition.

关 键 词：阴离子识别 咪唑基 受体 协同效应 尿素 检测 离子电荷 核磁共振谱 

分 类 号：O626[理学—有机化学]