Rational design of surface-confined nanostructured self-assemblies based on functional comb-shaped copolymers for tunable molecular orientation
- Authors
- Choi, Jin-Wook; An, Jongil; Son, Seung-Rak; Kim, Soyern; Park, Jisung; Park, Chan Beom; Lee, Jun Hyup
- Issue Date
- Nov-2021
- Publisher
- ELSEVIER
- Keywords
- Comb-shaped amphiphilic copolymer; Liquid crystal; Molecular orientation; Nanostructured self-assemblies; Surface-confinement
- Citation
- REACTIVE & FUNCTIONAL POLYMERS, v.168
- Journal Title
- REACTIVE & FUNCTIONAL POLYMERS
- Volume
- 168
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/41392
- DOI
- 10.1016/j.reactfunctpolym.2021.105042
- ISSN
- 1381-5148
- Abstract
- Functional ultrathin nanoarchitectures are commonly based on hierarchical molecular self-assemblies that are structurally tunable and facilely fabricable, and have found a broad range of potential applications from nanoelectronics to biosensors. Here, we demonstrate a simple and elegant approach for the rational design of ultrathin molecular nanoarchitectures for tunable interfacial orientation of liquid crystals (LCs) using the surfaceconfinement of functional amphiphilic copolymers. The surface-confined nanostructured self-assemblies are simply prepared by introducing common functional polymers into amphiphilic systems. The surface-confined copolymeric nanoalignment layer, which is constructed from the simple doping and molecular self-assembly of comb-shaped amphiphilic copolymers in a confined LC medium, comprises a hydrophobic polyacrylate segment with a long side chain moiety capable of uniformly controlling the LC alignment and a hydrophilic polyacrylic acid segment with a carboxylic acid group confined to the hydrophilic surface of indium tin oxide substrate. The combination of structural variations on amphiphilic copolymer system and tunability of molecular orientation makes the surface-confined copolymeric nano-assemblies highly attractive ultrathin nanoarchitectures. The resulting nanostructured self-assemblies exhibit a spontaneous and uniform vertical orientation of LC molecules, simultaneously providing the LC device with a superfast electro-optical switching time and a strong surface anchoring control.
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Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
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