Abstract
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.
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Dong, Z., Gao, G. Recognition and sensing of anions through synergistic effects using simple benzimidazolium-urea receptors. Chin. Sci. Bull. 57, 1266–1274 (2012). https://doi.org/10.1007/s11434-012-5033-2
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DOI: https://doi.org/10.1007/s11434-012-5033-2