Regensburg 2019 – wissenschaftliches Programm
CPP 1: Focus: Morphology of Complex Polymer Mesophases: From Experiment to Modelling - organized by Kostas Daoulas and Volker Abetz
CPP 1.1: Hauptvortrag
Montag, 1. April 2019, 09:30–10:00, H14
Building Complex Colloids with Block Copolymers and Topology — •Andre Groeschel — Physical Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg Essen, 47057 Duisburg, Germany
Colloids are omnipresent in nature as well as our everyday lives, e.g. in paint, milk, as quantum dots or colloidal gold. For technological applications colloids are typically synthesized using equipment or wet chemical processes giving access to particles of well-controlled sizes. In nature however, biological colloids are often self-assembled from smaller building blocks. Virus particles are composed of a defined number of proteins, giving viruses a complex composition, surface chemistry, and in some cases, also shape-anisotropy on length scales as small as 20 nm. Inspired by the natural structuring abilities, self-assembly concepts are now researched that allow the synthesis of colloids with comparable level of detail and control.
This presentation summarizes our efforts to create complex colloids using concepts of self-assembly, block copolymers and topology. Block copolymers are comparably primitive but versatile building blocks that are able to assemble into microparticles with unusual shapes, mesoscopic inner structure, and functional 2D/3D surfaces. To better understand the relationship between topology an mesostructure, we analyze the particles with electron tomography and resolve the delicate 3D arrangement of polymer domains through reconstructions.