| 초록 |
There have been many studies to investigate the phase behavior of block copolymers (BCPs) in cylindrical confinement. In the nanometer scale 2D confinement, the phase behavior of BCPs is mainly dependent upon the degree of confinement and the interfacial interaction. However, most studies have focused only on the effects of commensurability on the microdomains of BCP. In this study, we employed organosilicates (OS) which have surface energies tunable by curing temperature as internal coating layers to examine the phase behavior of BCPs in nanoconfinements as a function of interfacial energy. Lamellae-forming poly(styrene-b-methyl methacrylate) (PS-b-PMMA) (SMA) in the melt was introduced within the OS-coated AAO pores by capillary force. With detailed analysis, we were able to identify that the self-assembly of SMA in the 2D confinement is competitively affected by entropic and enthalpic effects as the OS interfacial energy is varied. |
