Anion receptor interacting with anions through hydrogen bonds and charge transfer complex

作者：Kim Young Hee; Rhim Sol; Park Jin Joo; Kang Jongmin^*

来源：Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2012, 74(1-4): 317-323.

DOI：10.1007/s10847-012-0118-8

• Anion receptor
• Charge transfer complex
• Hydrogen bond
• Viologen

We have designed and synthesized a new anion receptor 3 (2+) interacting with anions through hydrogen bonds and charge transfer complex depending on concentration and basicity of anion. Therefore, anions with weak basicity such as chloride, bromide and hydrogen sulfate bound to the receptors 3 (2+) mainly through hydrogen bonds at low concentration of anions, although charge transfer complexes were observed with large excess of these anions. Anions with strong basicity such as fluoride, acetate, benzoate and dihydrogen phosphate bound to the receptors 3 (2+) primarily through charge transfer interactions at UV-Vis titration condition (20 mu M). However, in more concentrated H-1 NMR titration condition (2 mM) with these anions, 3 (2+) decomposed to unknown compound. As charge transfer complexes showed colorimetric response, they turned out to be efficient naked eye detector for anions with strong basicity such as fluoride, acetate, benzoate and dihydrogen phosphate.

• 出版日期2012-12