| 초록 |
We demonstrate organic field effect transistor (OFET) devices based on highly aligned aggregates of the conjugated polymer, poly[3-(potassium-7-hexanoate)-thiophene-2,5-diyl] (P3PHT) using self-assembled DNA, in which the P3PHT/DNA comlex can be effectively aligned by a simple shearing method. The charge carrier mobility of the P3PHT/DNA complex is 3 orders of magnitude higher compared to the case of neat P3PHT, owing to the versatility of DNA as a template and charge injection layer. Additionally, the specific chemical interactions and physical electrostatic binding affinities between DNA and Cu2+ enables p-doping, affording hole mobilities as high as 0.22 cm2 V−1 s−1, which represents the highest reported values for water-soluble polythiophene materials. The interdisciplinary convergence between DNA nanotechnology and aqueous processed organic electronics can suggest important guidelines for the design of sustainable and efficient organic optoelectronic devices. |
