Soluble alternating donor-acceptor conjugated polymer electrochromes
US8394917B2 · kind B2 · utility
0Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2010 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Sep 8, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/549
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Embodiments of the invention are directed to alternating donor-acceptor (DA) polymers that are soluble and display a blue or green neutral state that oxidizes to a transmissive state for use as an electrochromic polymer. The D units have 3,4-dioxythiophene, 3,6-dialkoxythieno[3,2-b]thiophene or 3,5-dialkoxy-dithieno[3,2-b:2′,3′-d]thiophene groups. Embodiments of the invention are directed to a method for preparation of the alternating DA polymeric sequences of the DA polymers by a cross-condensation of a nucleophilic acceptor monomer and an electrophilic donor monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.