Synthesis and microwave dielectric properties of polyphenylene liquid crystal compounds with lateral substitution by methyl and fluorine

References

• Urruchi V, Marcos C, Torrecilla J, et al. Note: tunable notch filter based on liquid crystal technology for microwave applications. Rev Sci Instrum. 2013;84(2):26102.
   Web of Science ®Google Scholar
• Franc A-L, Karabey OH, Rehder G, et al. Compact and broadband millimeter-wave electrically tunable phase shifter combining slow-wave effect with liquid crystal technology. IEEE T Microw Theory. 2013;61(11):3905–3915.
   Web of Science ®Google Scholar
• Kundtz N. Next generation communications for next generation satellites. Micro J. 2014;57(8):56–65.
   PubMed Web of Science ®Google Scholar
• Perez-Palomino G, Baine P, Dickie R, et al. Design and experimental validation of liquid crystal-based reconfigurable reflect array elements with improved bandwidth in F-band. IEEE T Antenn Propag. 2013;61(4):1704–1713.
   Web of Science ®Google Scholar
• Deo P, Mirshekar-Syahkal D, Seddon L, et al. Liquid crystal based patch antenna array for 60 GHz appl cations. IEEE Radio and Wireless Symposium; 2013 Jan 20-23; Austin, TX, USA: IEEE Press; 2013. p. 127–1294.
   Google Scholar
• Chen C-Y, Tsai T-R, Pan C-L, et al. Room temperature terahertz phase shifter based on magnetically controlled birefringence in liquid crystals. Appl Phys Lett. 2003;83(22):4497–4499.
   Web of Science ®Google Scholar
• Tsai T-R, Chen C-Y, Pan R-P, et al. Electrically controlled room temperature terahertz phase shifter with liquid crystal. IEEE Microw Wirel Co. 2004;14(2):77–79.
   Web of Science ®Google Scholar
• Garbovskiy Y, Zagorodnii V, Krivosik P, et al. Liquid crystal phase shifters at millimeter wave frequencies. J Appl Phys. 2012;111(5):54504.
   Web of Science ®Google Scholar
• Fritzsch C, Wittek M. Recent developments in liquid crystals for microwave applications. IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting; 2017 Jul 9-14; San Diego, CA: IEEE Press; 2017. p. 1217–1218.
   Google Scholar
• Gauza S, Li J, Wu S, et al. High birefringence and high resistivity isothiocyanate‐based nematic liquid crystal mixtures. Liq Cryst. 2005;32(8):1077–1085.
   Web of Science ®Google Scholar
• Parish A, Gauza S, Wu S, et al. New fluorinated terphenyl isothiocyanate liquid crystals. Liq Cryst. 2008;35(1):79–86.
   Web of Science ®Google Scholar
• Herman J, Dziaduszek J, Dąbrowski R, et al. Novel high birefringent isothiocyanates based on quaterphenyl and phenylethynyltolane molecular cores. Liq Cryst. 2013;40(9):1174–1182.
   Web of Science ®Google Scholar
• Jadżyn J, Świergiel J, Płowaś I, et al. Dipolar aggregation and the static dielectric permittivity of some liquid crystalline materials. Ind Eng Chem Res. 2013;52(11):4109–4112.
   Web of Science ®Google Scholar
• Kowerdziej R, Olifierczuk M, Parka J. Thermally induced tunability of a terahertz metamaterial by using a specially designed nematic liquid crystal mixture. Opt Express. 2018;26(3):2443–2452.
   PubMed Web of Science ®Google Scholar
• Lapanik V, Sasnouski G, Timofeev S, et al. New highly anisotropic liquid crystal materials for high-frequency applications. Liq Cryst. 2018;45(8):1242–1249.
   Web of Science ®Google Scholar
• Kula P, Dziaduszek J, Herman J, et al. 9.4: invited paper: highly birefringent nematic liquid crystals and mixtures. Vol. 45. San Diego, CA: John Wiley & Sons, Ltd; 2014. p. 100–103.
   Google Scholar
• Spadlo A, Drzewinski W-J, Dabrowski R-S, et al. Synthesis and mesomorphic properties fluoro- and chloro-substituted isothiocyanatotolanes. XV Conference on Liquid Crystals. International Society for Optics and Photonics. Vol. 5565. Zakopane, Poland; 2004 Sep 1. p. 19–25.
   Google Scholar
• Szczuciński Ł, Dąbrowski R, Urban S, et al. Synthesis, mesogenic and dielectric properties of fluorosubstituted isothiocyanatoterphenyls. Liq Cryst. 2015;42(12):1706–1729.
   Web of Science ®Google Scholar
• Parish A, Gauza S, Wu S-T, et al. New fluorinated terphenyl isothiocyanate liquid crystal single compounds and mixtures. Mol Cryst Liq Cryst. 2008;489(1):22.
   Web of Science ®Google Scholar
• Kula P, Herman J, Pluczyk S, et al. Synthesis and mesomorphic properties of laterally substituted 4,4”-dialkyl -p-quaterphenyls[J]. Liq Cryst. 2014;41(4):503–513.
   Web of Science ®Google Scholar
• Szczuciński U, Dbrowski R, Urban S, et al. Synthesis, mesogenic and dielectric properties of fluorosubstituted isothiocyanatoterphenyls[J]. Liq Cryst. 2015;42(12):1706–1729.
   Web of Science ®Google Scholar
• Reuter M, Garbat K, Vieweg N, et al. Terahertz and optical properties of nematic mixtures composed of liquid crystal isothiocyanates, fluorides and cyanides. J Mater Chem C. 2013;1(29):4457–4463.
   Web of Science ®Google Scholar
• Dąbrowski R, Kula P, Herman J. High birefringence liquid crystals. Crystals. 2013;3(3):443–482.
   Web of Science ®Google Scholar
• Yu C-Y, Li E, Zhang Z-Y, et al. Broadband complex permittivity measurements of nematic liquid crystals based on cavity perturbation method. Liq Cryst. 2020;47(1):89–98.
   Web of Science ®Google Scholar
• Wachala A, Pytlarczyk M, Kula P. On the balance between nematic and smectic phases in 2′,3-difluoro-4,4″-dialkyl -p-terphenyls[J]. Liq Cryst. 2019;46(10):1558–1567.
   Web of Science ®Google Scholar
• Herman J, Dmochowska E, Pytlarczyk M, et al. Synthesis and mesomorphism of tetrafluoro substituted 4-cyano oligophenyls. Liq Cryst. 2019;46(11):1666–1671.
   Web of Science ®Google Scholar
• Herman J, Aptacy A, Dmochowska E, et al. The effect of partially fluorinated chain length on the mesomorphic properties of chiral 2 ‘,3 ‘-difluoroterphenylates. Liq Cryst. 2020;47(14–15):2332–2340.
   PubMed Web of Science ®Google Scholar
• Wang KL, Szilvasi T, Gold J, et al. New room temperature nematogens by cyano tail termination of alkoxy and alkylcyanobiphenyls and their anchoring behavior on metal salt-decorated surface. Liq Cryst. 2020;47(4):540–556.
   Web of Science ®Google Scholar
• Wang KL, Rahman MS, Szilvasi T, et al. Influence of multifluorophenyloxy terminus on the mesomorphism of the alkoxy and alkyl cyanobiphenyl compounds in search of new ambient nematic liquid crystals and mixtures. Liq Cryst. 2020;1–17. DOI:https://doi.org/10.1080/02678292.2020.1810792
   Web of Science ®Google Scholar
• Wang KL, Rai P, Fernando A, et al. Synthesis and properties of fluorine tail-terminated cyanobiphenyls and terphenyls for chemoresponsive liq cryst. Liq Cryst. 2020;47(1):3–16.
   Web of Science ®Google Scholar
• Pytlarczyk M, Kula P. Synthesis and mesomorphic properties of 4,4”-dialkynyl-2’,3’-difluoro-p-terphenyls - the influence of C equivalent to C acetylene linking bridge. Liq Cryst. 2019;46(4):618–628.
   Web of Science ®Google Scholar
• Date R-W, Imrie C-T, Luckhurst G-R, et al. Smectogenic dimeric liquid crystals. The preparation and properties of the α,ω-bis(4-n-alkylanilinebenzylidine-4’-oxy)alkanes[J]. Liq Cryst. 1992;12(2):203–238.
   Web of Science ®Google Scholar
• Attard G-S, Date R-W, Imrie C-T, et al. Non-symmetric dimeric liquid crystals The preparation and properties of the α-(4-cyanobiphenyl-4′-yloxy)-ω-(4-n-alkylanilinebenzylidene-4′-oxy)alkanes[J]. Liq Cryst. 1994;16(4):529–581.
   Web of Science ®Google Scholar
• Imrie C-T. Laterally substituted dimeric liquid crystals[J]. Liq Cryst. 1989;6(4):391–396.
   Web of Science ®Google Scholar
• Yeap G-Y, Lee H-C, Mahmood WAK, et al. Synthesis, thermal and optical behaviour of non-symmetric liquid crystal dimers alpha-(4-benzylidene-substituted-aniline-4 ‘-oxy)-omega- pentyl-4-(4 ‘-phenyl)benzoateoxy hexane[J]. Phase Transit. 2011;84(1):29–37.
   Web of Science ®Google Scholar
• Yeap G-Y, Hng T-C, Yeap S-Y, et al. Why do non-symmetric dimers intercalate? The synthesis and characterisation of the α-(4-benzylidene-substituted-aniline-4′-oxy)-ω-(2-methylbutyl-4′-(4″-phenyl)benzoateoxy)alkanes[J]. Liq Cryst. 2009;36(12):1431–1441.
   Web of Science ®Google Scholar
• Cruickshank E, Salamonczyk M, Pociecha D, et al. Sulfur-linked cyanobiphenyl-based liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2019;46(10):1595–1609.
   Web of Science ®Google Scholar
• Li J, Che Z, Mo L, et al. 5,6-Difluorobenzofuran: a new core for the design of liquid crystal compound with large dielectric anisotropy and broad nematic range[J]. Liq Cryst. 2020;1–8. DOI:https://doi.org/10.1080/02678292.2020.1777473
   Web of Science ®Google Scholar
• Hsu C-S, Shyu K-F, Chuang -Y-Y, et al. Synthesis of laterally substituted bistolane liquid crystals. Liq Cryst. 2000;27(2):283–287.
   Web of Science ®Google Scholar
• Cao Z, Xuan L, Hu L, et al. Investigation of optical testing with a phase-only liquid crystal spatial light modulator. Opt Express. 2005;13(4):1059–1065.
   PubMed Web of Science ®Google Scholar
• Cao W, Jiang D, Liu Y, et al. A microwave tunable bandpass filter for liquid crystal applications. Frequenz. 2017;71(7–8):293–297.
   Web of Science ®Google Scholar
• Jiang D, Chen H, Li X, et al. A novel tunable microwave filter integrated power dividers using liquid crystal. Microw Opt Techn Let. 2015;57(11):2539–2543.
   Web of Science ®Google Scholar