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

제118회 대한화학회 학술발표회, 총회 및 기기전시회 Regulating Sensing Property of Spiropyrans by Conjugation with Different Functional Groups via a Triazole Linkage [동우화인켐㈜ 포스터상]

등록일
2016년 8월 25일 00시 10분 24초
접수번호
1106
발표코드
POLY.P-49 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 13일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
고분자화학
저자 및
공동저자
이주현, 이민혜, 최은정, 송창식*
성균관대학교 화학과, Korea
Spiropyrans (SP) are well-known photochromic materials and they undergo cis-trans isomerization to a merocyanine (MC) by external stimuli such as UV/visible light, thermal energy, and metal ions. SP can be utilized to a colorimetric sensor because MC is showing a vivid color. Using “click chemistry”, we can induce functional groups easily. Cu-catalyzed alkyne-azide cycloaddition (CuAAC) is well-known as a click reaction since it is simple, fast, and has no side reaction. Triazole linkage that is formed by CuAAC can be utilized as a metal’s binding site and it may show selectivity for a number of metal cations. Our strategy is to change SP’s sensing and solvatochromic properties depending on different side groups. In this study, we compared the effects of different functional groups on the property of SP. The metal-ion sensing ability was measured by UV-vis spectroscopy, and ethylene glycol-functionalized SP (E-SP) showed more selective to Ca2+ than benzyl-functionalized SP (B-SP). Also, E-SP improved the water solubility and cyanide sensing ability, which was supported by UV-vis spectroscopy under aqueous environment. E-SP was applied to a paper sensor for cyanide because of its fast response and high intensity change in aqueous environment.

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