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Issue 15, 2008
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Refractive index engineering of transparent ZrO2–polydimethylsiloxane nanocomposites

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Abstract

Transparent ZrO2–polydimethylsiloxane (PDMS) nanocomposites with high refractive index were prepared by dispersing ZrO2nanoparticles in a PDMS matrix via ligand molecule engineering. The ligand molecule consists of a diamine head group that adsorbs strongly onto the ZrO2nanoparticles, and a siloxane tail group with a double-tailed structure that can be easily stretched within the PDMS matrix and yields a greater steric hindrance compared to single-tailed structure. The transmission electron micrograph shows that the designed Si-based ligand molecule has a role to play in keeping ZrO2nanoparticles fully-dispersed even after the ZrO2nanoparticles were transferred into the PDMS matrix. UV-vis spectra indicate that ZrO2–PDMS nanocomposite had a high transparency of 93.3% in the whole visible range. The refractive index of the ZrO2–PDMS nanocomposite could be varied from 1.39 to 1.65 simply by increasing the ZrO2 content from 0 to 20.8% v/v.

Graphical abstract: Refractive index engineering of transparent ZrO2–polydimethylsiloxane nanocomposites

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Article information


Submitted
05 Oct 2007
Accepted
11 Jan 2008
First published
22 Feb 2008

J. Mater. Chem., 2008,18, 1751-1755
Article type
Paper

Refractive index engineering of transparent ZrO2–polydimethylsiloxane nanocomposites

S. Lee, H. Shin, S. Yoon, D. K. Yi, J. Choi and U. Paik, J. Mater. Chem., 2008, 18, 1751
DOI: 10.1039/B715338D

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