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Received May 11, 2009
Accepted May 26, 2009
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Spiropyran의 분산용매가 Sol-Gel 하드 코팅 막의 광 변색 특성에 미치는 영향
Effect of Solvents on the Photochromic Properties of Spiropyran in Hard Coating Films Prepared by Sol-Gel Method
건양대학교 화공생명학과, 320-711 충남 논산시 내동 26 1공주대학교 정보통신공학과, 314-701 충남 공주시 신관동 182번지 2한국에너지기술연구원, 365-343 대전시 유성구 장동 71-2
Department of Chemical and Biochemical Engineering, Konyang University, 26 Nae-dong, Nonsan-si, Chungnam 320-711, Korea 1Department of Information and Communication Technology, Gongju National University, 182, Shinkwan-dong, Gongju-si, Chungnam 314-701, Korea 2Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
Korean Chemical Engineering Research, August 2009, 47(4), 430-435(6), NONE Epub 25 August 2009
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Abstract
실란커플링제인 glycidoxypropyl trimethoxysilane과 vinyltriethoxysilane을 출발물질로 하여 sol-gel 법에 의해 유-무기 혼성 용액을 제조하였다. 이 용액에 spiropyran 계 광 변색 염료를 다양한 종류의 용매에 용해시킨 후 혼합하여 광변색 코팅 용액을 제조하였다. 그 후 기재인 polycarbonate 시트에 코팅시키고 열 경화시켜 광 변색성을 갖는 하드 코팅 막을 제조하였다. 이 과정 중 spiropyran을 용해시킨 용매의 극성이 코팅 막의 광변색 특성에 미치는 영향을 조사하였다. Spiropyran을 용해시킨 용매의 극성이 증가할수록 겔 매트릭스에서의 spiropyran의 열린 구조가 더욱 안정화되므로 코팅 막의 소색속도가 감소하였다.
Spiropyran-doped organic-inorganic hybrid coatings were prepared starting from glycidoxypropyl triethoxysilane and vinyltriethoxysilane by a sol-gel method. They were applied as a thin layer to polycarbonate sheets and their photochromic properties were investigated. The effect of polarity of solvents dissolving the spiropyran was investigated on the photochromic properties. The decoloration rate of the spiropyran decreased with increasing the polarity of solvents dissolving the spiropyran because the open form of the spiropyran was easily stabilized in the polar gel matrix.
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Jeong SH, Cho KI, Song KC, Korean Chem. Eng. Res., 46(1), 112 (2008)
