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Open Access Nano Express

Nanocomposites of ZnS and poly-(dimethyl)-block-(phenyl)siloxane as a new high-refractive-index polymer media

Natalia Sergienko1, Dmitri Godovsky12*, Boris Zavin1, Minjong Lee2 and Minjin Ko3

Author affiliations

1 A.N.Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences (INEOS RAS), Vavilova St. 28, Moscow, 119991, Russia

2 LG Technology Centre Moscow, Paveletskaya sq 2/3, Moscow, 115054, Russia

3 LG Chem Research Park, Yuseong-gu, Daejeon, 305-380, Republic of Korea

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Citation and License

Nanoscale Research Letters 2012, 7:181  doi:10.1186/1556-276X-7-181

Published: 8 March 2012

Abstract

In the present paper, we describe a new and original method to obtain transparent, siloxane-based composites, with high refractive index (up to 1.68). The method is based on the decomposition of Zn-siloxane, mixed with a poly-(dimethyl)-block-(phenyl)siloxane matrix in different ratios. It was found that after treatment of such mixed metal-containing polymer blend with H2S, the nanoparticles of ZnS are formed, with the size in a 1- to 5-nm range, which allow effective increase of the refractive index of the nanocomposite mixture with poly-(dimethyl)-block-(phenyl)siloxane without loss of film transparency. We succeded to increase the refractive index from 1.54 (pure matrix) up to 1.68 (composite with a ZnS content of 4.6 vol.%). The siloxane-based compositions are optically transparent, which makes it possible to use them as light-emitting diodes or solar cell sealants or adhesives.

Keywords:
high-refractive-index media; polymer-nanocomposite; metallosiloxane