Structural color from solid-state polymerization-induced phase separation
| Autor: | Rabea Ganz, Alba Sicher, Richard O. Prum, Eric R. Dufresne, Guido Panzarasa, Andreas Menzel, Daniel Messmer, Robert W. Style, René M. Rossi, Maria Feofilova, Vinodkumar Saranathan |
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| Rok vydání: | 2021 |
| Předmět: |
Length scale
Materials science Polymers FOS: Physical sciences Color 02 engineering and technology Condensed Matter - Soft Condensed Matter 010402 general chemistry 01 natural sciences Light scattering Polymerization chemistry.chemical_compound Phase (matter) Animals chemistry.chemical_classification Condensed Matter - Materials Science Materials Science (cond-mat.mtrl-sci) General Chemistry Polymer Feathers 021001 nanoscience & nanotechnology Condensed Matter Physics Nanostructures 0104 chemical sciences Monomer chemistry Chemical engineering Soft Condensed Matter (cond-mat.soft) 0210 nano-technology Structural coloration Macromolecule |
| Zdroj: | Soft Matter, 17 (23) |
| ISSN: | 1744-6848 1744-683X |
| Popis: | Structural colors are produced by wavelength-dependent scattering of light from nanostructures. While living organisms often exploit phase separation to directly assemble structurally colored materials from macromolecules, synthetic structural colors are typically produced in a two-step process involving the sequential synthesis and assembly of building blocks. Phase separation is attractive for its simplicity, but applications are limited due to a lack of robust methods for its control. A central challenge is to arrest phase separation at the desired length scale. Here, we show that solid-state polymerization-induced phase separation can produce stable structures at optical length scales. In this process, a polymeric solid is swollen and softened with a second monomer. During its polymerization, the two polymers become immiscible and phase separate. As free monomer is depleted, the host matrix resolidifies and arrests coarsening. The resulting polymeric composites have a blue or white appearance. We compare these biomimetic nanostructures to those in structurally-colored feather barbs, and demonstrate the flexibility of this approach by producing structural color in filaments and large sheets. Soft Matter, 17 (23) ISSN:1744-683X ISSN:1744-6848 |
| Databáze: | OpenAIRE |
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