Fluorinated smectics – New liquid crystalline medium for smart windows and memory displays
Autor: | Jerzy Dziaduszek, Mateusz Mrukiewicz, Wiktor Piecek, Dorota Węgłowska, Jakub Bozetka, M. Żurowska, M. Chrunik, Paweł Perkowski, Rafał Mazur, Roman Dabrowski |
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Rok vydání: | 2018 |
Předmět: |
010302 applied physics
Materials science Fluorobenzene Analytical chemistry Ionic bonding 02 engineering and technology Atmospheric temperature range Conductivity 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Phase (matter) 0103 physical sciences Monolayer Materials Chemistry Physical and Theoretical Chemistry Solubility 0210 nano-technology Saturation (magnetic) Spectroscopy |
Zdroj: | Journal of Molecular Liquids. 267:415-427 |
ISSN: | 0167-7322 |
Popis: | 4′-Alkyl-4-alkoxy-3-fluorobiphenyls and laterally mono-, two- and three-fluorosubstituted 4″-alkyl-4-fluoroterphenyls were synthesized and used as the components of mixtures with a broad temperature range of the monolayer smectic A phase and the Cr-SmA1-Iso or Cr-SmA1-N-Iso phase sequence. Several ionic potassium complexes of 18-crown-6-ether and dibenzo-18-crown-6-ether with different anions (Br−, ClO4−, 4-octylphenolate, 3,4-difluorophenolate, 3,5-difluoro-4-cyanophenolate and 4-dodecylbenzenesulfonate) were prepared and their solubility and conductivity in fluorobenzene were measured. Properties of dynamic scattering and clear states (threshold and saturation voltages) of two types of mixtures (mixture A with Cr-SmA1-Iso and mixture B with Cr-SmA1-N-Iso phase sequences) doped with above mentioned ionic compounds have been tested. The mixture B has the smectic layers more defected and it shows excellent properties to design displays with memory or smart windows. |
Databáze: | OpenAIRE |
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