The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2018
Filed:
Aug. 28, 2014
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Ying Wang, West Chester, PA (US);
Steven Kit Chow, Brooklyn, NY (US);
Norman Herron, Newark, DE (US);
Michael Henry Howard, Jr., Montchanin, DE (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
This invention relates to a composition including (a) a dopant, (b) a first host having at least one unit of Formula I, and (c) a second host compound having Formula II. The formulae have the structures: where Q is a fused ring linkage having the formula In Formula I: Aris an aromatic group including at least one electron-withdrawing group or a deuterated analog; Aris an aryl group, an aromatic group including at least one electron-withdrawing group or a deuterated analog; Rand Rare the same or different at each occurrence and are H, D, aryl or deuterated aryl. In Formula II: Ris the same or different at each occurrence and is D, aryl, or deuterated aryl, with the proviso that at least one Ris aryl or deuterated aryl; Rand Rare the same or different at each occurrence and are D, aryl, or deuterated aryl; a is an integer from 1-4; and b and c are the same or different and are an integer from 0-4.