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Coatings 2018, 8(2), 57; doi:10.3390/coatings8020057

Surface Modification of Sol-Gel Silica Antireflective Coatings by F-PMHS: A Simple Method for Improvement of Amphiphobicity

1
College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
2
Research Center of Laser Fusion, China Academy of Engineering Physical, Mianyang 621900, China
3
Key Laboratory of Green Chemistry & Technology, College of Chemistry, Sichuan University, Chengdu 610064, China
These authors contributed to this work equally.
*
Authors to whom correspondence should be addressed.
Received: 23 December 2017 / Revised: 11 January 2018 / Accepted: 16 January 2018 / Published: 5 February 2018
(This article belongs to the Special Issue Applications of Optical Thin Film Coatings)
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Abstract

Sol-gel silica antireflective coatings (ARCs) with improved amphiphobicity were simply fabricated on BK7 glass substrates via fluorinated-poly(methylhydrogen)siloxane (F-PMHS) surface modification by the dip-coating method. The results of Fourier Transform Infrared (FTIR) and X-ray Photoelectron Spectroscopy (XPS) showed that F-PMHS were covalently bonded to the surface of ARCs. F-PMHS modification significantly improved hydrophobicity and oleophobicity of silica ARCs by increasing their water contact angles from 27° to 105° and oil contact angles from 17° to 45°. In addition to the improved amphiphobicity, the modified ARCs also possessed excellent transmittance. Most importantly, it was found that with increasing F-PMHS content the atom amounts and porous property of modified ARCs were almost unchanged. This result had been shown to be associated with the changes of optical property and amphiphobicity for silica ARCs, and the details were discussed. View Full-Text
Keywords: amphiphobicity; surface modification; sol-gel method; antireflective coating; fluorinated-poly(methylhydrogen)siloxane amphiphobicity; surface modification; sol-gel method; antireflective coating; fluorinated-poly(methylhydrogen)siloxane
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MDPI and ACS Style

Lin, W.; Sun, Y.; Zheng, J.; Zheng, Y.; Yan, L.; Jiang, B.; Yang, W.; Chen, H.; Zhang, X. Surface Modification of Sol-Gel Silica Antireflective Coatings by F-PMHS: A Simple Method for Improvement of Amphiphobicity. Coatings 2018, 8, 57.

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