Patent ID: 6984737

Claim:
A 2-(N,N-di(het)arylamino) thiophene derivative of the structure wherein: R 1 , R 2 , R 3 , R 4 and R 5 —independently of one another—are each a monofunctional (het)aryl system, in the form of a conjugated carbocyclic or heterocyclic ring system which may also comprise identical or different ring types which are linked or fused on linearly or at angles, it being possible for the peripheral hydrogen atoms to be substituted by alkyl, alkoxy, phenoxy, dialkylamino or diphenylamino groups (alkyl=C 1 to C 6 ); R 1 may furthermore be a corresponding bifunctional (het)aryl system, R 3 may furthermore be a group R 8 , except if R 1 is a bifunctional (het)arylene system, R 8 representing a chemical bond or a bifunctional (het)arylene system; R 4 may furthermore denote R 10 , R 10 representing a chemical bond or a bifunctional (het)arylene system, or R 4 may be one of the following groups: R 9 representing a chemical bond or a bifunctional (het)arylene system; R 5 may also be H or the following may furthermore be the case: R 4 and R 5 together form one of the following groups: R 4 and R 1 together form the following group: R 4 and R 3 together form the following group: R 5 and R 1 together form the following group: R 5 and R 3 together form the following group: R 5 , R 4 and R 1 together form one of the following groups: R 5 , R 4 and R 3 together form the following group: Y in each case denoting CH or N.