Berlin 2015 – wissenschaftliches Programm
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BP: Fachverband Biologische Physik
BP 5: Nanoparticles and Composite Materials I (joint CPP/BP)
BP 5.7: Vortrag
Montag, 16. März 2015, 11:30–11:45, C 243
Self-assembly of nanoparticles in block copolymer nanotemplates — •Manfred Stamm1,2, Andreij Horechyy1, and Bhandu Nandan3 — 1Leibniz-Institut für Polymerforschung Dresden — 2Technische Universität Dresden — 3Indian Institute of Technology, Delhi
Nanotemplates generated by microphase segregation of diblock copolymers can be used for directed self-assembly of nanoparticles. There are several routes possible where functional nanoparticles are either added to the copolymer solution prior to film formation and then preferentially migrate to one of the phases or where the nanoparticles are added after copolymer nanotemplate formation and then show preferential adsorption to one of the phases. In both cases ordered nanoparticle arrays are obtained and by combination of the two approaches dual structures /1/ may be formed. With hexagonal structures and removal of the majority phase, nanorods are generated /2/. Under certain conditions helical arrangements of nanoparticles inside the cylinders are observed /3/ which are due to dense packing in confined geometry. Copolymer nanotemplates thus provide an interesting tool for generation of ordered nanoparticle structures. We acknowledge funding by DFG. /1/ Adv.Fun.Mater. 23 (2013) 483-90; /2/ J.Mater.Chem. 22 (2012) 25102-7; /3/ Angew. Chem. Int. Ed. 53 (2014) 1-5.