Material, composition and method

摘要

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 Sp1 represents a first spacer group, NB is a norbornene group that may be unsubstituted or substituted with one or more substituents; n1 and n2 are 0 or 1; ml is 1 if nl is 0 and ml is at least 1 if nl is 1; m2 is 1 if n2 is 0 and m2 is at least 1 if n2 is 1;Ar1 represents an aryl or heteroaryl group; RI independently 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.