Naphthyl Methylacrylate Block Copolymer Insulators for Application in Pentacene Organic Thin-Film Transistors

In this paper, we prepared a series of aryl group functionalized polymers, via the reversible addition-fragmentation chain transfer (RAFT) polymerization, used as insulator layer materials for pentacene thin-film transistors. The poly(methyl methacrylate) (PMMA)-based block polymers contain naphthyl side groups that could induce ordered morphology of pentacene due to pi-pi interaction. Furthermore, the block polymers can effectively increase the dielectric constant (6.59), resulting in a threshold voltage drop from -15 V to -7 V.