Regensburg 2022 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: Focus Session: Photonic Structures from Polymer and Colloidal Self-Assembly

CPP 8.1: Hauptvortrag

Montag, 5. September 2022, 15:00–15:30, H38

Stimuli-Responsive Opal Films based on Core-Shell Particle Self-Assembly — •Markus Gallei — Lehrstuhl für Polymerchemie, Universität des Saarlandes, Campus C4 2, Saarbrücken

In the last decade stimuli-responsive polymers have proven their feasibility for a wide range of important applications. These polymers are capable of changing their conformation, solubility, or they can even break or form covalent bonds upon a change of temperature or pH, light irradiation or by electrochemical stimuli, or combinations thereof. The presentation will focus on materials, which contain at least one selectively addressable segment, either chemically or physically. Functional porous nanostructures based on inverse opal films obtained after shear-induced particle self-assembly will be highlighted and discussed in more detail. In the case of soft colloidal crystal and their inverted structures, external triggers additionally lead to a remarkably fast and reversible change of their intriguing optical properties. Moreover, such opal structures can be used for the design of smart catch and release systems based on responsive moieties, but also as soft templates for ceramic materials. The talk will give some recent examples for the rational design of functional organic as well as hybrid porous materials with hierarchical architectures. Some of the highlighted polymer or polymer-templated structures can be advantageously used for direct conversion into ordered ceramic or carbonaceous materials. Herein presented preparation strategies will pave the way for a manifold of applications in the field of sensing and robust membrane technologies.