Process of producing and applications of a multi-component benzo[1,2-B:4,5-B] difluorothienothiophene randomly substituted polymers for organic solar cells

US9527963B2 · kind B2 · utility

Assignee

• Phillips 66 Company · US

Inventors

• Wei Wang · Dublin, US
• Jun Yang · Tai'an City, CN
• Chenjun Shi · El Monte, US
• Christopher Daeffler · Houston, US
• Janice Hawkins · Lake Forest, US
• Yue Wu · Beijing, CN
• Ting He · Dublin, US
• Hui Huang · Longbeilingcun, CN
• Amit Palkar · Bartlesville, US
• Kathy Woody · Bartlesville, US
• Joe Bullock · Bartlesville, US

Key dates

• Filing date: May 27, 2015
• Grant date: Dec 27, 2016
• Expiry date: May 27, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07B59/002
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process of dissolving 3-fluoro-4,6-dihydrothieno[3,4-b]thiophene in a solvent to create a solution. An initiator is then added to the solution to produce an initiated solution followed by adding a fluorinated chemical to the initiated solution to produce 2,3-difluoro-4,6-dihydrothieno[3,4-b]thiophene. 2,3-difluoro-4,6-dihydrothieno[3,4-b]thiophene is then oxidized with an oxidant to produce 2,3-difluorothieno[3,4-b]thiophene. A brominating step then occurs to the 2,3-difluorothieno[3,4-b]thiophene to produce 4,6-dibromo-2,3-difluorothieno[2,3-c]thiophene 4,6-dibromo-2,3-difluorothieno[2,3-c]thiophene is then debrominated and polymerized toThe stoichiometric ratio of (f+g)≈h and f, g and h are not equal to 0. Additionally, in this embodiment R1, R2, R3 and R4 are independently selected from the group consisting of alkyl group, alkoxy group, aryl groups and combinations thereof and where the combination of R1, R2, R3 and R4 are not all identical.