Dresden 2006 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 12: POSTER Colloids, Nanoparticles and Self-Organizing Systems
CPP 12.16: Poster
Dienstag, 28. März 2006, 17:00–19:00, P3
Essential Parameters of PS-b-P4VP Nanotemplates Development for Applications — •Yiming Sun1, Radim Krenek1, Ganna Gorodyska1, Alexander Sidorenko2, and Manfred Stamm1 — 1Leibniz-Institut für Polymerforschung e.V., Dresden, Germany — 2Bell Labs, Lucent Technologies, Murray Hill, USA
Block copolymer nanotemplates demonstrate a cheap and prospective way for nanodevices requiring regular patterns of closely packed asymmetric nanodomains (nanowires) of various materials on various substrates. Many application based on electrodeposition or PVD of metals and their alloys, electrochemical polymerization and other kinds of loading can be taken into account. Here we deal with essential parameters for the nanotemplate deposition improving ordering and varying periodicity of the nanotemplates. The nanotemplates are based on self-assembly of poly(styrene-block-4-vinylpyridine) (PS-b-P4VP) with low molar mass additive 2-(4-hydroxyphenylazo)benzoic acid (HABA). Various morphologies may be formed, depending on ratio of molecular weights of the blocks, with a characteristic scale of nanodomains of about 10 nm. We show that ordering of patterns may be improved by a combination of slow vapour annealing and low roughness of substrates (ITO glass, Si and mica). Variation of periodicity was studied in respect to stoichiometric ratio of HABA in the assembly.