Polymer‐Stabilized Chromonic Liquid‐Crystalline Polarizer

Park, Seulki; Kim, Soeun; Kim, Dae‐Yoon; Kang, Shin‐Woong; Shin, Seunghan; Kuo, Shiao‐Wei; Hwang, Seok‐Ho; Lee, Seung Hee; Lee, Myong‐Hoon; Jeong, Kwang‐Un

doi:10.1002/adfm.201002546

Cited by 35 publications

(36 citation statements)

References 61 publications

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“…Polarized FT-IR spectroscopy is a commonly used technique to estimate the intra- and inter-molecular interactions without damaging the specimen28515253. The 5CB-filled LC cell was prepared by attaching two PBRM MOTF in antiparallel.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, our research group successfully fabricated the coatable thin film polarizer by the polymer-stabilization of macroscopically oriented lyotropic chromonic liquid crystal (LCLC)28293031. The LCLC-based coatable polarizers stabilized by the photopolymerization of LCLC monomers exhibit high polarizabilities as well as excellent chemical and mechanical resistances.…”

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confidence: 99%

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Multifunctional Optical Thin Films Fabricated by the Photopolymerization of Uniaxially Oriented Lyotropic Liquid Crystal Monomers for Electro-Optical Devices

Choi

Yoon

et al. 2016

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A multifunctional optical thin film (MOTF) is fabricated by coating the newly synthesized perylene-based reactive mesogen (PBRM) and stabilized by the subsequent photopolymerization. Based on the spectroscopic results combined with morphological observations, it is found that nematic liquid crystal (NLC) is aligned parallel to the molecular long axis of PBRM not only due to the long-range physical anchoring effect but also due to the short-range molecular physical interactions between alignment layer and NLC molecules. From the electro-optical properties of LC test cells fabricated with the PBRM MOTF, it is clearly demonstrated that the PBRM MOTF can work as the planar LC alignment layer as well as the in-cell coatable polarizer. The coatable PBRM MOTF from lyotropic chromonic reactive mesogens can pave a new way for the flexible optoelectronic devices.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Multifunctional Optical Thin Films Fabricated by the Photopolymerization of Uniaxially Oriented Lyotropic Liquid Crystal Monomers for Electro-Optical Devices

Choi

Yoon

et al. 2016

Sci Rep

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“…Chromonic liquid crystals (CLCs) are interesting for biophysics, optics and organic electronics [1][2][3][4]. Organic molecules such as sunset yellow (SSY) and disodium chromoglycate (DSCG) with roughly flat aromatic cores and ionic peripheral groups, as shown in Figure 1, are known to assemble spontaneously in water to form anisotropic aggregates of various sizes and become LCs.…”

Section: Introductionmentioning

confidence: 99%

“…Various methods including photo-alignment [7], mechanical rubbing [8], oblique evaporation of metal films [9] and shear alignment [2,3] have been used to align CLCs. Alignment of LCs using topographic *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Orientation of chromonic liquid crystals by topographic linear channels: multi-stable alignment and tactoid structure

Clark

2013

Liquid Crystals

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We study the alignment behaviour of the chromonic liquid crystal phases of sunset yellow (SSY)/water, disodium cromoglycate (DSCG)/water and their mixtures when confined in cells by polymer films topographically imprinted with linear channels of 250 nm width, depth and spacing. A variety of novel alignment effects are generated by contact with such a patterned surface, as follows. Nematic DSCG and nematic SSY at low concentration and their nematic mixtures orient with the long axes of stacked chromonic aggregates on average parallel to the channels, that is, with the molecular planes normal to the channel axis. These oriented nematics exhibit isotropic/nematic tactoids aligned with their major axes along the channels. Two geometries of the tactoids, elliptic cylinder and rectangular cuboid with hemi cylindrical ends are observed. Additionally, a transition of DSCG tactoids from a three-dimensional (3D) director configuration to a two-dimensional one is observed when the tactoids on one surface of a cell touch the other surface of the cell. In SSY solutions of sufficiently high concentration, multi-stable alignment is found, including preferential in-plane orientation of the director parallel to, perpendicular to and 45 • rotated from the channels.

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“…Studies on the host have focused on the monomer types of liquid crystals rather than the polymer types [7][8][9][10]. The monomer types, which usually form films by a photo curing method, have limitations in complete film formation and maintaining the alignment of molecules in the guest-host coatable polarizer [11][12][13]. In comparison, the polymer types are more advantageous to use in film formation because they involve a thermal curing method, which is a simpler method than photo curing.…”

Section: Introductionmentioning

confidence: 99%

Optimized molecular structures of guest–host system for highly efficient coatable polarizer

et al. 2015

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Polymer‐Stabilized Chromonic Liquid‐Crystalline Polarizer

Cited by 35 publications

References 61 publications

Multifunctional Optical Thin Films Fabricated by the Photopolymerization of Uniaxially Oriented Lyotropic Liquid Crystal Monomers for Electro-Optical Devices

Multifunctional Optical Thin Films Fabricated by the Photopolymerization of Uniaxially Oriented Lyotropic Liquid Crystal Monomers for Electro-Optical Devices

Orientation of chromonic liquid crystals by topographic linear channels: multi-stable alignment and tactoid structure

Optimized molecular structures of guest–host system for highly efficient coatable polarizer

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