| abstract |
Disclosed is a polythiophene having high electrical conductivity, excellent solubility, long-term stability, excellent processability and high regioregularity.nSpecifically disclosed is a regioregular polythiophene represented by chemical formula (1) (wherein R 1 - represents a 4-substituent comprising an alkyl group having 1 to 20 carbon atoms; R 2 -O- represents a 3-substituent comprising an alkyl group having 1 to 20 carbon atoms; and n represents such a numeral value that the number average molecular weight of the regioregular polythiophene becomes 200 to 1,000,000), wherein the regioregularity of the head-tail repeating structure is at least 98%. |