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:
Sep. 22, 2015
Filed:
Jun. 24, 2011
Jonathan Pillow, Cambridgeshire, GB;
Torsten Bünnagel, Cambridgeshire, GB;
Martina Pintani, Cambridgeshire, GB;
Christian Nielsen, London, GB;
Jonathan Pillow, Cambridgeshire, GB;
Torsten Bünnagel, Cambridgeshire, GB;
Martina Pintani, Cambridgeshire, GB;
Christian Nielsen, London, GB;
Cambridge Display Technology, Ltd., Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Abstract
Composition having an organic semiconducting material and a triplet-accepting material of formula (I) with a triplet energy level lower than the triplet energy level of the organic semiconducting material, in which each Ar is optionally substituted aryl or heteroaryl group, n is 1-3, m is 1-5, q is 0 or 1, each Ris H or a substituent, and each Ris H or a substituent. Where Ris not H, Rand (Ar)bound to the same carbon atom may be linked by a direct bond or a divalent group. Where n or m is at least 2, adjacent Ar groups may be linked by a divalent group. Where q=0, Ris not H and is linked to (Ar)by a direct bond or a divalent group.