Tetrazine monomers and copolymers for use in organic electronic devices
US8673183B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2011 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | May 13, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/549
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers of formula (I):where each A is S, Se or C═C; each x is an integer from 1 to 4; each R1 is independently H, F, CN or a C1-C20 linear or branched aliphatic group; Ar is one or more substituted or unsubstituted aromatic units; and, n is an integer 5 or greater, can be formed into films or membranes that are useful as active layers in organic electronic device, such as PV solar cells, providing high power conversion efficiencies and good thermal stability. Such copolymers may be synthesized from monomers of formula (II):by Stille or Suzuki coupling reactions. Such monomers may be synthesized by a variation of the Pinner synthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.