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Issue 33, 2012
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Electrooptical and dielectric properties of alkylthiol-capped gold nanoparticle–ferroelectric liquid crystal nanocomposites: influence of chain length and tethered liquid crystal functional groups

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Abstract

The influence of gold nanoparticles dispersed in ferroelectric liquid crystals (FLCs) on the properties of the resulting nanocolloids has been investigated by thermoanalytical, electrooptical and dielectric methods. All gold nanoparticles were protected by thiolate capping layers either connected via alkyl groups of different chain length or via flexible spacers bridged to liquid crystalline p-cyano-biphenyl end groups. The colloidal stability of the gold nanocomposites with capping layers consisting of nonyl or octadecylthiolate groups is drastically reduced compared to the stability of those with p-cyano-biphenyl end groups. The present work describes the influence of the kind of capping layers around the gold nanoparticles and the effect of the amount of gold nanoparticles dispersed in such liquid crystal colloids on their electrooptical and dielectric parameters.

Graphical abstract: Electrooptical and dielectric properties of alkylthiol-capped gold nanoparticle–ferroelectric liquid crystal nanocomposites: influence of chain length and tethered liquid crystal functional groups

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Publication details

The article was received on 27 Apr 2012, accepted on 20 Jun 2012 and first published on 13 Jul 2012


Article type: Paper
DOI: 10.1039/C2SM25991E
Citation: Soft Matter, 2012,8, 8722-8728
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    Electrooptical and dielectric properties of alkylthiol-capped gold nanoparticle–ferroelectric liquid crystal nanocomposites: influence of chain length and tethered liquid crystal functional groups

    A. Lapanik, A. Rudzki, B. Kinkead, H. Qi, T. Hegmann and W. Haase, Soft Matter, 2012, 8, 8722
    DOI: 10.1039/C2SM25991E

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