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TY  - THES
AU  - Gorzolnik, Blazej
TI  - Amphiphilic block copolymers as templates for particle formation and positioning
CY  - Aachen
PB  - Publikationsserver der RWTH Aachen University
M1  - RWTH-CONV-112642
SP  - 180 S. : Ill., graph. Darst.
PY  - 2008
N1  - Aachen, Techn. Hochsch., Diss., 2008
AB  - In this thesis, amphiphilic block copolymers were successfully applied as templates for the controlled formation and defined positioning of metal and metal oxide nanoparticles arranged in periodic and artificial patterns on flat surfaces as well as in polymer nanofibre structures. Three different types of amphiphilic block copolymers, polystyrene-b-poly(2-vinylpyridine), polyisoprene-b-poly(2-vinylpyridine) and poly(butadiene)-b-poly(ethylene oxide), were synthesized by living anionic polymerisation and subsequently employed in the formation of reverse micelles in selective solvents. Polymer micelles were used as nanoreactors, which were loaded by Au or TiO2 precursors and deposited in controlled fashion by a dip-coating technique onto SiO2 substrates to form a hexagonally ordered monomicellar film. Exposure to a plasma process reduced precursor to corresponding metal and removed polymer completely leaving behind nanoparticles attached to the substrate in the same order of the micelles. Influence of the selective solvent and the dipping angle on the long-range order of the micelles was studied. Micellar monolayers were characterized by Scanning Force Microscopy and the regularity of the lattice was quantified as the number of dislocations present for a given number of micelles. It was shown that micelles self-organize in a lattice with fewer defects (up to 40
KW  - Anionische Polymerisation (SWD)
KW  - Nanostruktur (SWD)
KW  - Strukturierung (SWD)
KW  - Photolithographie (SWD)
KW  - Micelle (SWD)
KW  - Metallcluster (SWD)
KW  - Gold (SWD)
LB  - PUB:(DE-HGF)11
UR  - https://publications.rwth-aachen.de/record/50081
ER  -