[2PS-274]
Precise Synthesis of Thermally Crosslinkable Hole-Transporting Homopolymers with Triphenylamine and Benzocyclobutene via Living Anionic Polymerization
발표자양예은 (숭실대학교)
연구책임자강범구 (숭실대학교)
Abstract
In solution-processed OLEDs, the underlying layers must possess sufficient solvent resistance to withstand the solvents used for the deposition of upper layers. In this study, a novel monomer containing both a hole-transporting triphenylamine(TPA) group and a thermally crosslinkable benzocyclobutene(BCB) group was designed and precisely synthesized via living anionic polymerization. The resulting homopolymer enables both functionalities, efficient charge transport and thermal insolubilization, within a single polymer backbone. The anionic polymerization of N-(4-Ethenylphenyl)-N-phenylbicyclo[4.2.0]octa-1,3,5-trien-3-amine (BTPA) was carried out using potassium naphthalenide (K-Naph) as an initiator in THF at -30 oC for 10 min. The resulting (poly(BTPA)) exhibited well-controlled molecular weight and narrow molecular weight distribution, confirming the living nature of the polymerization. The synthetic results and characterizations of poly(BTPA) will be discussed in detail.