Colloids with valence: fabrication, functionalization and directional bonding
US9486768B2 · kind B2 · utility
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Key dates
| Filing date | Oct 28, 2013 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Oct 28, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F212/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for creating the colloidal analogs of atoms with valence: colloidal particles with chemically distinct surface patches that imitate hybridized atomic orbitals, including sp, sp2, sp3, sp3 d, sp3 d2 and sp3 d3. Functionalized with DNA with single-stranded sticky ends, patches on different particles can form highly directional bonds through programmable, specific and reversible DNA hybridization. These features allow the particles to self-assemble into ‘colloidal molecules’ with triangular, tetrahedral and other bonding symmetries, and should also give access to a rich variety of new microstructured colloidal materials.
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