Stimuli-responsive polymers are known to influence material properties like the change of polarity and interaction in the bulk state or the wettability when immobilized at surfaces. Compared to classical stimuli like the change of solvent, light or temperature, the electrical field or the addition of chemical oxidation/reducing reagents are much less investigated. Redox-responsive polymers especially metallopolymers attracted enormous attention in the recent past. The immobilization of redox-switchable metallopolymers on paper substrates by surface-initiated atom transfer radical polymerization, also referred to as “grafting from” technique, leads to feasible switchable porous materials.1 Furthermore, block copolymers consist of two or more polymer segments covalently connected to each other and are in focus of researchers in the last decades. Tremendous research interests are due to the unique capability of forming fascinating nanostructures in the bulk state comprising lamellae, cylinders, spheres and co-continuous structures or by self-organization in (selective) solvents.2 By using metallopolymers as part of a block copolymer structure, well-ordered preceramic materials yielding in advanced ceramics after thermal treatment can be obtained.3 In the present work, different synthetic strategies for the design of functional block copolymers starting from iron, cobalt-, and silicon-containing monomers will be addressed.4, 5 By taking advantage of controlled radical or anionic polymerization, as well as postmodification strategies, several hierarchical metallopolymer architectures with well-controlled nano-sized structures in the bulk state can be obtained. These polymers are feasible as redox-responsive and structured preceramic materials.

Immobilized stimuli-responsive metallopolymers and preceramic block copolymer architectures

254th National Meeting (2017)

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