ZB 10 - Soft Condensed Matter (R. Holyst)

Formation of net-like patterns of gold nanoparticles in liquid crystal matrix at the air-water interface

Author(s): Paczesny, Jan and Sozanski, Krzysztof and Dziecielewski, Igor and Zywocinski, Andrzej and Holyst, Robert
Title: Formation of net-like patterns of gold nanoparticles in liquid crystal matrix at the air-water interface
Abstract: Controlled patterning and formation of nanostructures on surfaces based self-assembly is a promising area in the field of bottom-up'' engineering. We report formation of net-like structures of nanoparticles (Au NPs) in a matrix of liquid crystalline amphiphile at the air-water interface. After initial to at least 18 mN m(-1), decompression of a Langmuir film of mixture containing both components results in formation of net-like The average size of a unit cell of the net is easily by changing the surface pressure during the decompression of film. The net-like patterns of different, desired average unit cell were transferred onto solid substrates (Langmuir-Blodgett method) investigated with scanning electron microscopy and X-ray (XRR). Uniform coverage over large areas was proved. XRR revealed lifting of the Au NPs from the surface during the of the film. A molecular mechanism of formation of the net-like structures is discussed.
Journal: JOURNAL OF NANOPARTICLE RESEARCH
Volume: 14
ID: ISI:000302641000064
Year: 2012
DOI: 10.1007/s11051-012-0826-4