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:
Feb. 25, 2020
Filed:
Jul. 08, 2015
Cambridge Display Technology Limited, Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Jonathan Pillow, Godmanchester, GB;
Martin Humphries, Godmanchester, GB;
Ruth Pegington, Godmanchester, GB;
Florence Bourcet, Godmanchester, GB;
Yonek Hleba, Godmanchester, GB;
Thomas Kugler, Cambridge, GB;
Sheena Zuberi, Godmanchester, GB;
Cambridge Display Technology Limited, Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Abstract
A composition comprising a first material substituted with at least one group of formula (I) and a second material substituted with at least one group selected from groups of formulae (IIa) and (IIb): wherein: Spand Spare spacer groups; NB independently in each occurrence is a norbornene group that may be unsubstituted or substituted with one or more substituents; n1 and n2 are 0 or 1; m1 is 1 if n1 is 0 and m1 is at least 1 if n1 is 1; m2 is 1 if n2 is 0 and m2 is at least 1 if n2 is 1; Arrepresents an aryl or heteroaryl group; Rindependently in each occurrence is H or a substituent; and * represents a point of attachment to the first or second material. The composition may be used to form a layer of an organic electronic device, for example the hole-transporting layer of an organic light-emitting device.