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제108회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Photophysical properties of novel fluorescence diarylethene and its application on cell

등록일
2011년 7월 29일 16시 38분 11초
접수번호
0610
발표코드
Ⅲ-ORGN.P-99 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅲ>
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
PANG SHICHONG, 장다은1
경희대학교 화학및신소재과학과, China
1경희대학교 화학과, Korea
A novel fluorescence diarylethene was synthesized through two steps reaction from 2, 3-bis(2-methylbenzo[b]thiophen-3-yl)-thiophene (BTT). The new compound emits strong fluorescence in the closed-ring isomer and its fluorescence quantum yield was determined to be 0.35, using 3-aminofluoranthene (0.53 in cyclohexane) as the reference upon 400 nm photo-excitation. Photochemical coloration and decoloration cycles were measured and the result showed that the novel compound is an ideal material for photo-induced fluorescence modulation and other applications based on photochromism with high fatigue resistance. The photo-cyclization and photo- cycloreversion quantum yield were found to be 0.25 and 0.044, respectively. Single crystal was obtained by recrystallization from mixed solvents (Hexane/EA = 4:1). The molecule was fixed in an anti-parallel mode and the distance between reacting carbon atoms on the aryl rings is 3.58 ?, which is less than 4.2 ?. Thus the novel compound could undergo photochromism in the crystalline phase during alternating irradiation with 312 nm and visible light. Furthermore, liposomes containing the fluorescent compound were prepared in order to investigate the intracellular fluorescence and photochomism properties.

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