| 초록 |
We report high-performance organic field-effect transistors (OFETs) fabricated with thermally-crosslinked bottlebrush polymers as gate dielectrics. By utilizing bottlebrush polymers with varying degree of polymerization prepared by living anionic polymerization and ring opening metathesis polymerization, we investigated the effect of density of alkyne groups per repeat unit of the polymers on on-set crosslinking time (tc). Interestingly, the bottlebrush polymer having the higher density of alkyne groups showed reduced tc and solvent resistance. Considering that the bottlebrush co-polymer with moderate density of alkyne groups showed sufficiently low tc (＜1 min), enhanced charge carrier mobility, and elongated device lifetime, these results demonstrate that bottlebrush polymers with tailored density of grafted alkyne functionalities would be promising dielectric materials for the development of high-performance flexible OFETs fabricated by high-throughput fabrication manner. |
