Fabrication and Characteristics of Sol-Gel Derived Fluorinated Hybrid Material Films |
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Authors: | Dong Jun Kang Tae-Ho Lee Byeong-Soo Bae |
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Affiliation: | 1. Department of Materials Science and Engineering, Laboratory of Optical Materials and Coating (LOMC), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Republic of Korea
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Abstract: | Fluorinated inorganic-organic hybrid materials (HYBRIMER) were successfully prepared from fluoroalkylsilanes (FASs) containing fluoro-alkyl functions and methacryloxypropyltrimethoxysilane (MPTMS) through a sol-gel process. The influence of concentration and fluoro-alkyl chain lengths of FASs on the physical characteristics of the fluorinated HYBRIMER films was examined. Larger fluorine contents lowered the refractive index within a range, which was closely dependent on the fluoro-alkyl chain lengths of FASs. Thermo-optic coefficients (TOC) were negative values, and the values grew with increasing fluorine contents and fluoro-alkyl chain lengths. Also, the thermal stability is enhanced by addition of fluorine in the HYBRIMER. |
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