Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Reexamination Certificate
2011-04-05
2011-04-05
Truong, Duc (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
C528S373000
Reexamination Certificate
active
07919574
ABSTRACT:
A polymer comprising one or more types of repeat units, wherein the polymer includes a substituted thieno[3,2-b]thiophene component A and a different component B in the same type of repeat unit or in different types of repeat units, and wherein the polymer excludes a substituted or unsubstituted thieno[2,3-b]thiophene moiety. The polymer can be used as a semiconductor in electronics such as in organic thin film transistors.
REFERENCES:
patent: 1 510 535 (2005-03-01), None
Martin Heeney et al., “Stable Polythiophene Semiconductors Incorporating Thieno[2,3-b]thiophene,”J. Am. Chem. Soc., vol. 127, No. 4, pp. 1078-1079 (published on web Jan. 7, 2005).
H. E. Katz et al., “Synthetic Chemistry for Ultrapure, Processable, and High-Mobility Organic Transistor Semiconductors,”Acc. Chem. Res., vol. 34, No. 5, pp. 359-369 (2001).
Christos D. Dimitrakopoulos et al., “Organic Thin Film Transistors for Large Area Electronics,”Adv. Mater., vol. 14, No. 2, pp. 99-117 (2002).
D. R. Rutherford et al., “Poly(2,5-ethynylenethiophenediylethynylenes), Related Heteroaromatic Analogues, and Poly(thieno[3,2-b]thiophenes). Synthesis and Thermal and Electrical Properties,”Macromolecules, vol. 25, No. 9, pp. 2294-2306 (1992).
Xinnan Zhang et al., “Alkyl-Substituted Thieno[3,2-b] thiophene Polymers and Their Dimeric Subunits,”Macromolecules, vol. 37, pp. 6306-6315 (published on web Jul. 30, 2004).
Li Yuning
Liu Ping
Ong Beng S
Wu Yiliang
Fay Sharpe LLP
Truong Duc
Xerox Corporation
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