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  • 09월 01일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 meso-5,6-Dichlorobenzimidazolyl Calix[4]pyrrole: Displaying High Affinity and Size-Selective Binding Towards Anionic Guests

등록일
2016년 8월 27일 09시 57분 38초
접수번호
2097
발표코드
ORGN.P-405 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 14일 (금요일) 11:00~12:30
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
이창희*, bezaendalemulugeta
강원대학교 화학과, Korea
The anion recognition chemistry of calix[4]pyrroles has been actively studied due to the ubiquitous role of anions in various chemical and biological processes. As a result, many systems have been developed in order to improve affinity and selectivity. Among various model systems, the meso-aryl picket calix[4]pyrroles have been utilized for the selective recognition of anions as well as anion-templated supramolecular capsule formation. With this presentation, a deep cavity calix[4]pyrrole derivatives carrying 5,6-dichlorobenzimidazole units at diametrically crossing meso-positions have been synthesized and fully characterized by spectroscopic means for the first time. The receptor showed high affinity for anions. The additional hydrogen bond donor placed on the meso-substituents play a key role on the enhancement of the binding affinity in addition selectivity of the anions based on their size. The cooperative interaction of anion-pi interactions and hydrogen bonding interaction are thought to be the reason for exceptionally high binding affinity. The detailed guest binding studies obtained from 1H NMR titration, UV-Vis spectroscopy, DFT-calculation data and ITC will be presented in detail.

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