| abstract |
A formulation including: an organic semiconducting polymer selected from the diketopyrrolopyrrole (DPP) and fused thiophene copolymer structures of the formulas (I), (II), or combinations thereof, or salts thereof, in an amount of from 0.1 to 5 wt% based on the total weight of the formulation: forumulas (I) and (II), respectively, where m is an integer from 1 to 2, n is an integer from 4 to 80, X and Y are independently selected from a divalent heteroaryl, such as a thiophene, R 1 , R 2 , R 3 , and R 4 is each a hydrocarbylene substituent as defined herein, a first solvent is selected from a cyclic aliphatic in an amount of from 2 to 98 wt%; and a second solvent selected from an aromatic in an amount of from 98 to 2 wt%. Also disclosed are method of making and using the disclosed formulations, for example, for use in electronic devices. |