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제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis of perylene-based wavelength shifting dyes and their application to a light converting agricultural film

2018년 2월 13일 16시 31분 04초
MAT.P-557 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 20일 (금요일) 11:00~12:30
Material Chemistry
저자 및
Jin Woong Namgoong, Tae Gyu Hwang, Jae Pil Kim*
Department of materials science and engineering, Seoul National University, Korea
A method that adjusts the light condition of photosynthesis has been studied. This approach involves manipulation of sunlight radiation by wavelength shifting for improved photosynthesis efficiency. Most plants mainly use blue light (400–500 nm) and red light (600–700 nm) for photosynthesis. Therefore, spectral conversion of green light in solar radiation into red light can enhance the photosynthesis efficiency of plants. For this, some studies using light converting films with inorganic fluorescent materials or fluorescent pigments have been conducted. The inorganic substances and pigments, however, easily migrate within the film due to their low compatibility with polymers, and this leads to a decline of optical properties of the light conversion films. To solve this issue, we synthesized soluble perylene-based wavelength shifting dyes presenting high stability and spectral converting efficiency within a polymer film. The synthesized dyes were blended with an acrylic polymer binder, and the mixture then coated on poly ethylene films, followed by heat treatment. As a result, the prepared fluorescent film showed high spectral converting efficiency without the migration of dye molecules and degradation of optical properties. Furthermore, the result of cultivation of lettuce and kale displayed an improvement in growth. In conclusion, this study demonstrates that the bulky aryl substituted perylene dye is efficient as a wavelength shifting material and provides suitable miscibility to poly ethylene based agricultural films, and confirms that the light converting film was effective in increasing productivity of the chosen plants.