Stabilization of melanin-based supraparticles using polymeric glue
US12043744B2 · kind B2 · utility
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Key dates
| Filing date | Sep 27, 2021 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Sep 27, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/011
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In various embodiments, the present invention is directed to a supraparticle for use in producing structural colors comprising a plurality of core/shell nanoparticles having a melanin or synthetic melanin core and a silica shell having a plurality of silanol groups on its outer surface and a poly(ethylene glycol) (PEG) crosslinker. In various embodiments, the structure of these crosslinked supra particles is reinforced by hydrogen bonds formed between the silanol groups on the core-shell nanoparticles and mechanical, solution phase, and dry state stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.