Phillips 66
Method of synthesis for organic semiconducting polymers

Abstract:

A method of forming a polymer, the method comprising combining 4,7-bis(5-bromo-4-alkyl thiophen-2-yl)-5-chloro-6-fluorobenzo[c][1,2,5]thiadiazole, (3,3'-difluoro-[2,2'-bithiophene]-5,5'-diyl)bis(trimethylstannane), and benzo[1,2-b:4,5-b']dithiophene-2,6-diyl)bis(trimethylstannane), Pd2dba3 and P(o-tol)3 to form the polymer: ##STR00001## In this polymer, W is selected from the group consisting of: S, Se, O, and N-Q. Additionally, in this polymer Q is selected from the group consisting of: a straight-chain or branched carbyl, silyl, or hydrocarbyl, a branched or cyclic alkyl with 1 to 30 atoms, a fused substituted aromatic ring, and a fused unsubstituted aromatic ring. R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are independently selected from the group consisting of: F, Cl, I, Br, CN, --NCO, --NCS, --OCN, --SCN, --OX, --SX, --NH.sub.2, --C(.dbd.O)X, --C(.dbd.O)--OX, --OX, --NHX, --NXX', --C(.dbd.O)NHX, --C(.dbd.O)NXX', --SO.sub.3X, --SO.sub.2X, --OH, --NO.sub.2, CF.sub.3, --SF.sub.5, a straight-chain or branched carbyl, silyl, or hydrocarbyl, a branched or cyclic alkyl with 1 to 30 atoms, a fused substituted aromatic ring, and a fused unsubstituted aromatic ring, and heteroaromatic rings. Additionally, in this polymer wherein the fused aromatic rings can be independently fused with groups consisting of: a straight-chain or branched carbyl, silyl, or hydrocarbyl, a branched or cyclic alkyl with 1 to 30 atoms, a fused substituted aromatic ring, and a fused unsubstituted aromatic ring; and the ratio of x is between 0.6 to 0.8 and y is between 0.2 and 0.4.