Multifunction of High Dichroism Optical Modulator based on The Mesogenic Core through Redox Reactions
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초록
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A tunable bandwidth dichroic mesogen (DCM) was utilized to fabricate an electrochromic modulator with anisotropic properties. The sequenced reactive mesogen stemmed from a perylenediimide (PDI) core, demonstrating a lyotropic chromic liquid crystal (LCLC) phase in X-ray diffraction and polarized optical microscopy analyses. LCLC polymer films were fabricated with uniaxial orientation and redox response by employing a continuous process involving coating, molecular self-assembly, and polymerization. The PDI molecules enabled effective anisotropic light modulation by attaining a stable aromatic dianion state. Moreover, the PDI film functioned as an E-type polarizer, exclusively absorbing ordinary waves at λ = 500 nm. Given this uniaxial orientation and optical attributes, the LCLC film exhibits promise for applications in flexible multicolor smart windows and optical safety filters. This work was supported by BK21 FOUR program.