Publikation

J. Koc, E. Schönemann, A. Amuthalingam, J. Clarke, J.A. Finlay, A.S. Clare, A. Laschewsky, A. Rosenhahn
Low Fouling Thin Hydrogel Coatings Made of Photo-crosslinked Polyzwitterions
Langmuir 2019, 35, 1552
DOI: 10.1021/acs.langmuir.8b02799
Although zwitterionic materials are among the most promising ones for preparing low-fouling surfaces, structural diversity has been quite limited until now. We therefore have synthesized a set of new, systematically varied zwitterionic hydrogel coatings, and compared their fouling behavior against a series of proteins, as well as against non-motile and motile marine model organisms. Overall, certain of these sulfo- and sulfabetaine coatings even match the high anti-fouling effectivity of poly(ethylene glycol)-based ones used as control, while offering enhanced chemical stability. Importantly, performances vary individually for a given fouler-hydrogel pair. Even seemingly minor chemical changes of the polymer structure influence the antifouling performance markedly. Therefore, the antifouling performance of a specific polymer cannot be generally ranked as "more performing" or "less performing", but depends on the particular ensemble, and has to be adapted accordingly.
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