High performance surface-modified TiO2/silicone nanocomposite

Abstract The mismatch of refractive index (RI) between light emitting diode (LED) chips and packaging resins severely lowers the lighting emitting efficacy of LED. The RI can be enhanced by the introduction of high RI nanoparticles but meanwhile it is a great challenge to maintain the high transpare...

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Autores principales:	Pei Huang, Han-Qiao Shi, Hong-Mei Xiao, Yuan-Qing Li, Ning Hu, Shao-Yun Fu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/52fe2b3f6769407db66ce17d4e3344f4
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spelling	oai:doaj.org-article:52fe2b3f6769407db66ce17d4e3344f42021-12-02T11:52:35ZHigh performance surface-modified TiO2/silicone nanocomposite10.1038/s41598-017-05166-72045-2322https://doaj.org/article/52fe2b3f6769407db66ce17d4e3344f42017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05166-7https://doaj.org/toc/2045-2322Abstract The mismatch of refractive index (RI) between light emitting diode (LED) chips and packaging resins severely lowers the lighting emitting efficacy of LED. The RI can be enhanced by the introduction of high RI nanoparticles but meanwhile it is a great challenge to maintain the high transparency for resins due to the agglomeration of nanoparticles. In this work, a facile strategy is proposed to fabricate silicone nanocomposites with a high transparency (>88%, less than 2% decrease relative to pure silicone resin), largely enhanced RI (an increase from 1.42 to 1.60) and improved thermal stability (73 °C increase in weight loss of 50%). Specifically, the ultra-fine monodispersed TiO2/silicone composites are prepared by direct solvent mixing of 1 wt% surface modified TiO2 nanoparticles (S-TiO2) into the silicone resin, in which S-TiO2 are prepared by direct introduction of titanate coupling agent in the process of TiO2 growth to induce the formation of protective layer on the surfaces of TiO2 nanoparticles. This methodology demonstrated is simple, cost-effective and versatile for the massive fabrication of highly transparent LED packaging materials with greatly enhanced refractive index and meanwhile enhanced thermal stability.Pei HuangHan-Qiao ShiHong-Mei XiaoYuan-Qing LiNing HuShao-Yun FuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Pei Huang Han-Qiao Shi Hong-Mei Xiao Yuan-Qing Li Ning Hu Shao-Yun Fu High performance surface-modified TiO2/silicone nanocomposite
description	Abstract The mismatch of refractive index (RI) between light emitting diode (LED) chips and packaging resins severely lowers the lighting emitting efficacy of LED. The RI can be enhanced by the introduction of high RI nanoparticles but meanwhile it is a great challenge to maintain the high transparency for resins due to the agglomeration of nanoparticles. In this work, a facile strategy is proposed to fabricate silicone nanocomposites with a high transparency (>88%, less than 2% decrease relative to pure silicone resin), largely enhanced RI (an increase from 1.42 to 1.60) and improved thermal stability (73 °C increase in weight loss of 50%). Specifically, the ultra-fine monodispersed TiO2/silicone composites are prepared by direct solvent mixing of 1 wt% surface modified TiO2 nanoparticles (S-TiO2) into the silicone resin, in which S-TiO2 are prepared by direct introduction of titanate coupling agent in the process of TiO2 growth to induce the formation of protective layer on the surfaces of TiO2 nanoparticles. This methodology demonstrated is simple, cost-effective and versatile for the massive fabrication of highly transparent LED packaging materials with greatly enhanced refractive index and meanwhile enhanced thermal stability.
format	article
author	Pei Huang Han-Qiao Shi Hong-Mei Xiao Yuan-Qing Li Ning Hu Shao-Yun Fu
author_facet	Pei Huang Han-Qiao Shi Hong-Mei Xiao Yuan-Qing Li Ning Hu Shao-Yun Fu
author_sort	Pei Huang
title	High performance surface-modified TiO2/silicone nanocomposite
title_short	High performance surface-modified TiO2/silicone nanocomposite
title_full	High performance surface-modified TiO2/silicone nanocomposite
title_fullStr	High performance surface-modified TiO2/silicone nanocomposite
title_full_unstemmed	High performance surface-modified TiO2/silicone nanocomposite
title_sort	high performance surface-modified tio2/silicone nanocomposite
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/52fe2b3f6769407db66ce17d4e3344f4
work_keys_str_mv	AT peihuang highperformancesurfacemodifiedtio2siliconenanocomposite AT hanqiaoshi highperformancesurfacemodifiedtio2siliconenanocomposite AT hongmeixiao highperformancesurfacemodifiedtio2siliconenanocomposite AT yuanqingli highperformancesurfacemodifiedtio2siliconenanocomposite AT ninghu highperformancesurfacemodifiedtio2siliconenanocomposite AT shaoyunfu highperformancesurfacemodifiedtio2siliconenanocomposite
_version_	1718394983926464512

High performance surface-modified TiO2/silicone nanocomposite

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