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| Type |
Poster Presentation |
| Area |
Organic Chemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 18일 (목요일) 11:00~12:30 |
| Code |
ORGN.P-84 |
| Subject |
Potassium and Cesium Salt Recognition by a Calix[4]crown-5 Strapped Calix[4]pyrrole Multitopic Ion Pair Receptor |
| Authors |
Seung Hyeon Kim, Sung Kuk Kim*
Department of Chemistry, Gyeongsang National University, Korea
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| Abstract |
A calix[4]crown-5 strapped calix[4]pyrrole was synthesized as a multitopic ion pair receptor. In this case, the calix[4]arene subunits was locked in the 1,3-alternate conformation whereas the calix[4]pyrrole constituent is conformationally flexible. The ion pair receptor was found to have ability to bind specific ion pairs such as potassium and cesium salts with high selectivity. It was proved by 1H NMR spectroscopic analyses that the ion pair receptor formed ion complexes with cesium salts and potassium salts via two different binding mods. For example, it formed the cesium salt complexes in which the cesium cation was bound to the crown-5 ring with the anions hydrogen bonded to the calix[4]pyrrole. By contrast, in the cases of potassium salts, the potassium cation was encapsulated in the crown-5 unit with anions located outside the ion pair receptor. |
| E-mail |
tmdgusdl7777@naver.com |
|
122nd General Meeting of the KCS