Structure of micelles formed by highly asymmetric polystyrene-b-polydimethylsiloxane and polystyrene-b-poly[5-(N,N-diethylamino)isoprene] diblock copolymers

0348142 - ÚMCH 2011 RIV US eng J - Journal Article
Giacomelli, F. C. - Riegel, I. C. - Štěpánek, Petr - Petzhold, C. L. - Ninago, M. D. - Satti, A. J. - Ciolino, A. E. - Villar, M. A. - Schmidt, V. - Giacomelli, C.
Structure of micelles formed by highly asymmetric polystyrene-b-polydimethylsiloxane and polystyrene-b-poly[5-(N,N-diethylamino)isoprene] diblock copolymers.
Langmuir. Roč. 26, č. 18 (2010), s. 14494-14501. ISSN 0743-7463
R&D Projects: GA ČR GA202/09/2078
Grant - others:AV ČR(CZ) ASCR/CONICET 2012CZ006
Institutional research plan: CEZ:AV0Z40500505
Keywords : dynamic light-scattering * block-copolymers * selective solvent
Subject RIV: BO - Biophysics
Impact factor: 4.269, year: 2010

The internal structure of polystyrene(PS)-shell micelles having core-forming blocks consisting of polydimethylsiloxane (PDMS) or poly[5-(N,N-diethylamino)isoprene] (PAI) was determined in detail by accessing the multilevel structural organization using static and dynamic light scattering and small-angle X-ray scattering techniques. Colloidal nanoparticles exhibiting either swollen core with a large surface area per corona chain that enables the PS chains to assume a random coil conformation with Gaussian statistics, or compact core and slightly stretched PS chains in the corona were obtained. Therefore, the results of this study provide an interesting alternative allowing for precise control of the core and corona properties of micelles in selective solvents.
Permanent Link: http://hdl.handle.net/11104/0006039