Patent ID: 7842198

Claim:
A method of using thiophene structural modification to promote n-type thiophene conductivity; said method comprising: preparing a polythiophene composition, said composition comprising a plurality of conjugated thiophene moieties; and providing said composition a structural modification sufficient to promote n-type conductivity, wherein said structurally modified composition has the structure wherein R 1 , R 2 and R 3 are selected from the substituent group consisting of fluoroalkyl moieties, C n H 2n+1 and where n is 1 to about 12, H, F and (CH 2 ) a X and where a is 1 to about 12 and X is selected from the group consisting of amino, hydroxy and carboxylic acid functionalities; and x, y and z are integers selected from the group of integers consisting of 1 and integers greater than 1.