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Fused thiophene-based conjugated polymers and their use in optoelectronic devices

United States Patent

9,711,728
July 18, 2017
View the Complete Patent at the US Patent & Trademark Office
The present teachings relate to polymeric compounds and their use as organic semiconductors in organic and hybrid optical, optoelectronic, and/or electronic devices such as photovoltaic cells, light emitting diodes, light emitting transistors, and field effect transistors. The disclosed compounds generally include as repeating units at least one annulated thienyl-vinylene-thienyl (TVT) unit and at least one other pi-conjugated unit. The annulated TVT unit can be represented by the formula: ##STR00001## where Cy.sup.1 and Cy.sup.2 can be a five- or six-membered carbocyclic ring. The annulated TVT unit can be optionally substituted at any available ring atom(s), and can be covalently linked to the other pi-conjugated unit via either the thiophene rings or the carbocyclic rings Cy.sup.1 and Cy.sup.2. The other pi-conjugated unit can be a conjugated linear linker including one or more unsaturated bonds, or a conjugated cyclic linker including one or more carbocyclic and/or heterocyclic rings.
Facchetti; Antonio (Chicago, IL), Marks; Tobin J. (Evanston, IL), Takai; Atsuro (Evanston, IL), Seger; Mark (Chicago, IL), Chen; Zhihua (Skokie, IL)
Northwestern University (Evanston, IL), Flexterra, Inc. (Skokie, IL)
14/ 884,986
October 16, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under grant number DE-SC0001059 awarded by the Department of Energy. The government has certain rights in the invention.