| abstract |
A formulation including: an organic semiconducting polymer selected from the diketopyrrolopyrrole (DPP) and fused thiophene co-polymer 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: formulas (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. |