Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Effect of Solvents on the Photochromic Properties of Spiropyran in Hard Coating Films Prepared by Sol-Gel Method

Spiropyran의 분산용매가 Sol-Gel 하드 코팅 막의 광 변색 특성에 미치는 영향

  • Kim, Dae Hyun (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Shin, Yong Tak (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Lee, Ju Yeon (Department of Chemical and Biochemical Engineering, Konyang University) ;
  • Hong, Wongil (Department of Information and Communication Technology, Gongju National University) ;
  • Lee, Bum Suk (Korea Institute of Energy Research) ;
  • Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
  • 김대현 (건양대학교 화공생명학과) ;
  • 신용탁 (건양대학교 화공생명학과) ;
  • 이주연 (건양대학교 화공생명학과) ;
  • 홍원길 (공주대학교 정보통신공학과) ;
  • 이범석 (한국에너지기술연구원) ;
  • 송기창 (건양대학교 화공생명학과)
  • Received : 2009.05.11
  • Accepted : 2009.05.26
  • Published : 2009.08.31
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Abstract

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.

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.

Keywords

Acknowledgement

Supported by : 한국산업기술재단, 지식경제부

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