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Structure and Optical Properties of Titania-PDMS Hybrid Nanocomposites Prepared by In Situ Non-Aqueous Synthesis

1
Department of Materials Science and Engineering, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway
2
Department of Physics, NTNU, Norwegian University of Science and Technology, 7491 Trondheim, Norway
3
SWING Beamline at Synchrotron SOLEIL, L’Orme des Merisiers Saint-Aubin BP 48, 91192 Gif-sur-Yvette, France
4
poLight AS, Kongeveien 77, 3188 Horten, Norway
*
Author to whom correspondence should be addressed.
Nanomaterials 2017, 7(12), 460; https://doi.org/10.3390/nano7120460
Received: 23 November 2017 / Revised: 15 December 2017 / Accepted: 18 December 2017 / Published: 20 December 2017
(This article belongs to the Special Issue Hybrid Nanomaterials for Future Technologies)
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Abstract

Organic-inorganic hybrid materials are attractive due to the combination of properties from the two distinct types of materials. In this work, transparent titania-polydimethylsiloxane hybrid materials with up to 15.5 vol. % TiO2 content were prepared by an in situ non-aqueous method using titanium (IV) isopropoxide and hydroxy-terminated polydimethylsiloxane as precursors. Spectroscopy (Fourier transform infrared, Raman, Ultraviolet-visible, ellipsometry) and small-angle X-ray scattering analysis allowed to describe in detail the structure and the optical properties of the nanocomposites. Titanium alkoxide was successfully used as a cross-linker and titania-like nanodomains with an average size of approximately 4 nm were shown to form during the process. The resulting hybrid nanocomposites exhibit high transparency and tunable refractive index from 1.42 up to 1.56, depending on the titania content. View Full-Text
Keywords: hybrid material; organic-inorganic; nanocomposite; titania; TiO2; polydimethylsiloxane (PDMS); non-aqueous; sol-gel; refractive index hybrid material; organic-inorganic; nanocomposite; titania; TiO2; polydimethylsiloxane (PDMS); non-aqueous; sol-gel; refractive index
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Dalod, A.R.M.; Grendal, O.G.; Blichfeld, A.B.; Furtula, V.; Pérez, J.; Henriksen, L.; Grande, T.; Einarsrud, M.-A. Structure and Optical Properties of Titania-PDMS Hybrid Nanocomposites Prepared by In Situ Non-Aqueous Synthesis. Nanomaterials 2017, 7, 460.

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