투고논문

A Calix[4]pyrrole Bearing a Quaternary Ammonium Group: A Fluoride-Selective Anion Receptor

 Ju Hyun Oh, Joon Hwa Lee, Sung Kuk Kim* 

Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju 660-701, Republic of Korea

Received Oct 6, 2021; Revised Nov 19, 2021; Accepted Nov 20, 2021

Abstract A calix[4]pyrrole (1) bearing a quaternary ammonium pendant via its meso phenoxy linker has been synthesized as the bromide salt form. It was revealed by 1H NMR spectroscopic analyses performed in DMSO-d6 that receptor 1 binds F- with high affinity and selectivity over other halide anions. The binding of receptor 1•Br- with F- and Cl- takes place by anion metathesis with the anions including F- and Cl-.

Keywords Anion receptor, Fluoride, Selectivity, Anion metathesis, Calix[4]pyrrole

* Address correspondence to: Sung Kuk Kim, Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University, Jinju, Republic of Korea. Tel: 82-55-772-1494; E-mail: sungkukkim@gnu.ac.kr