High Regioregular p-type Organic Semiconducting Polymer

Poly(3-hexylthiophene-2,5-diyl) (P3HT, 1) is a conjugated polymer showing the character of p-type semiconductors. By reason of its excellent photonics and electronics properties, it has been used as a material for organic photovoltaic cells, organic field-effect transistors, organic light-emitting diodes, etc.^1-5) In addition, it is able to create devices in coating processes because of its good solubility in organic solvents. It has been reported that the higher the regioregularity of P3HT is, the better the performance is.^1b) We provide P3HT with 98% regioregularity.