Diketopyrrolopyrrole-based polymers containing a diene group for semiconductors

A method of forming a polymer comprising

• mixing, in an environment that is substantially free of oxygen gas, a first compound of the formula:
• wherein R3, R4, R5, and R6, are independently selected from a substituted or unsubstituted alkyl group, an alkoxy group, a cyano, and a halogen, and M represents:
• Sn(Me)3, Sn(Bu)3, or B(OH)2,
• with a second compound of the formula:
• wherein R1 and R2 are independently selected from a hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group, X and Y are independently selected from O, S or Se,
• adding a solvent that is substantially free of oxygen gas to dissolve the mixture;
• adding an aryl bromide or heteroaryl bromide to the mixture and allowing the first compound to react with the second compound to form the polymer;
• and
• collecting the polymer.

An electronic device comprising a semiconductor material a having a structure represented by:

• wherein R1 and R2 are independently selected from a hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group;
• Ar1 and Ar2 are independently an aromatic or heteroaromatic group comprising about 4 to about 30 carbon atoms, and can be optionally substituted;
• Ar3 and Ar4 are independently an aromatic or heteroaromatic group comprising about 4 to about 20 carbon atoms, and can be optionally substituted;
• a and b are independently an integer from about 1 to about 4;
• c and d are independently an integer from about 0 to about 2;
• R3, R4, R5, and R6, are independently selected from a substituted or unsubstituted alkyl group, an alkoxy group, a cyano, or a halogen;
• and
• n represents a number from about 2 to about 5,000.