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  • 02월 26일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제115회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Design and synthesis of fluorescent chemosensors based on naphthalene and thiadiazole-containing excited-state intramolecular proton transfer (ESIPT) molecules

등록일
2015년 2월 25일 23시 58분 36초
접수번호
1366
발표코드
MAT.P-1167 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
문혜린, 박상혁*
공주대학교 화학과, Korea
Fluorescent chemosensors are continuously being designed and developed due to their wide range of applications. Among them, fluorescence chemosensors which are based on excited-state intramolecular proton transfer (ESIPT) materials have an advantage of the uncomplicated detection due to their large Stokes’ shift by the result of intrinsic 4-level photocycle scheme of the ground and excited states of two different tautomers. For instance, 2-(20-hydroxyphenyl)benzoxazole (HBO) preferentially adopts the enol (E) form stabilized by intramolecular hydrogenbonding in the ground state. Upon photoexcitation at 320 nm, the excited enol (E*) is quickly converted into the excited keto (K*) tautomer by ESIPT on a subpicosecond time scale, which gives rise to an emission band (~510 nm) with a large Stokes shift. However, up to now, core unit of ESIPT chemosensors are limited to several well-known molecules such as benzoxazole, sulfonamide, and hydroxyflavone. In this work, we have designed and synthesized novel class of ESIPT-based chemosensor molecules by the introduction of naphthalene- and thiadiazole group instead of benzene and benzoxazole unit. Anion detection using the new materials will be presented in this work

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