Columnar Liquid Crystal Film for Thermal Conducting Materials
발표자
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초록
내용
To develop thermal conducting materials with enhanced heat dissipating properties, discotic reactive mesogen (DRM) was newly synthesized. The DRM monomer and cross-linker exhibit columnar structures by self-assembly. Based on POM, DSC, and XRD analyses, it was realized that the DRM forms a smectic A mesophase. DRM films fabricated at mesophase and isotropic state show high thermal conductivity up to 1.09 W/mK because of ordered hexagonal lattice structure of DRM core. Additionally, columnar structure of DRM can be aligned by the magnetic field. The uniaxially aligned DRM film exhibits higher thermal conductivity than those without magnetic field. The DRM film can be applied to the highly efficient heat dissipating materials for automobiles, electronics, and display devices. This work was mainly supported by BK21 FOUR program, Basic Research Laboratory Program (2020R1A4A1018259) and Mid-Career Researcher Program (2016R1A2B2011041).