Preparation of silver nanoparticles in liquid crystalline systems |
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| Authors: | Rita Patakfalvi Imre Dékány |
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| Institution: | (1) Nanostructured Materials Research Group of the Hungarian Academy of Sciences, University of Szeged, H-6720 Szeged, Aradi v. t. 1, Hungary,;(2) University of Szeged, H-6720 Szeged, Aradi v. t. 1, Hungary, |
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| Abstract: | Silver nanoparticles preparation and the aggregation stability of the particles was investigated in lamellar liquid crystalline
systems. A liquid crystal of HDTABr/pentanol/water was first prepared. The water content was next increased while keeping
the mass ratio of HDTABr and pentanol constant. Silver nanoparticles were produced by replacing the aqueous phase by Ag sols
of various concentrations (0.5–5×10–3 mol/l) or by an in situ preparation method, i.e., interlamellar reduction of Ag+ ions in the liquid crystalline phase. The stability of the silver nanoparticles was monitored by UV-VIS spectroscopy and
TEM. The particle size ranged from 5 to 44 nm. The kinetic of silver nanoparticle aggregation was investigated. The effect
of nanoparticles on structural ordering in liquid crystals was studied by XRD measurements and it was established that the
lamellar distance (dL) was only slightly altered.
Electronic Publication |
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| Keywords: | Silver nanoparticles Liquid crystalline system UV-VIS spectroscopy X-ray diffraction TEM |
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