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학술발표회초록보기

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제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Fluorescent emission according to solvent polarity of oligothiophene functionalized with benzothiazole

등록일
2015년 9월 3일 10시 48분 29초
접수번호
1186
발표코드
ORGN.P-407 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
홍경임, 장우동*
연세대학교 화학과, Korea

Excited State Intramolecular Proton Transfer (ESIPT) has attracted much attention due to applications for molecular probes, luminescent materials, molecular logic gate, bioimaging etc. ESIPT molecules exhibit different fluorescent emissions via tautomerization depended on solvent polarity. The most remarkable property of ESIPT is large stoke shift, which avoids self-absorption. We have synthesized a series of ESIPT molecules, which have mono-, bis-, tri-oligothiophene with benzothiazole (1T-HBT, 2T-HBT, and 3T-HBT respectively). As the number of thiophene moieties increasing, the fluorescent emission bands were shifted to longer wavelength. 2T-HBT exhibited remarkable solvatochromism; green emission in non-polar solvent and blue emission in aprotic solvent. 2T-HBT-OMe didn`t show fluorescent emissions change in neither non-polar nor polar solvent. These results demonstrated that ESIPT affected emission change of 2T-HBT. Detailed aspect of this system will be reported in the symposium.


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