Molecules and oligomers for endothermic singlet fission
US10988570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2020 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Apr 6, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2261/72
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present disclosure relates to a composition that includes a repeat unit defined by where each of R1, R2, R3, R4, R5, R6, R7, and R8 includes at least one of a hydrogen atom, a fluorine atom, and/or a first hydrocarbon chain having between 1 and 20 carbon atoms, inclusively, where each of A1, A2, A3 and A4 are either a carbon atom or a nitrogen atom, when A1 is a nitrogen atom, A2 is a carbon atom, when A2 is a nitrogen atom, A1 is a carbon atom, when A3 is a nitrogen atom, A4 is a carbon atom, when A4 is a nitrogen atom, A3 is a carbon atom, either A1 or A2 form a covalent bond, x, with a carbon atom, a, either A3 or A4 form a covalent bond, y, with a carbon atom, b, L is a linker group that includes an aromatic ring, and n is between 1 and 20, inclusively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.