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학술발표회초록보기

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제107회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Photo-switchable Dyad, Triad, and Pentad Consisting of Porphyrin and Spiropyran Units

등록일
2011년 2월 16일 11시 12분 46초
접수번호
0447
발표코드
Ⅱ-ORGN.P-275 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 <발표Ⅱ>
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
박태종, 신은주
순천대학교 화학과, Korea
Spiropyran is well-known photochromic compound accomplishing molecular structural change to merocyanine form by the reversible photochemical cleavage of the C-O bond in the spiropyran ring on UV irradiation. In turn, merocyanine is transformed to spiropyran by ring closure, thermally or on irradiation of visible light. Reversible photochromic spiropyran-merocyanine transformation is one of the subject of active research on optical memory and switch. Because absorption spectra of two isomeric molecules are significantly different, the color change is the most spectacular evidence of photochromism. Besides this color change, many molecular and bulk properties also change in the case of incorporating photochromic molecules into organic materials. Incorporating photochromic molecules into organic materials leads to a variety of photoresponsive systems, the properties of which can be manipulated by light. Porphyrin is one of most frequently employed photoactive molecules due to its spectral and redox properties. A number of artificial light-harvesting antenna, long-range electron transfer systems, and molecular energy storage devices including porphyrins have been investigated. In this study, porphyrin-spiropyran dyad, porphyrin-(spiropyran)2 triad, and porphyrin-(spiropyran)4 pentad were prepared and the properties were investigated.

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