Mesomorphic and DFT diversity of Schiff base derivatives bearing protruded methoxy groups

References

• Antonijevic M, Petrovic M. Copper corrosion inhibitors. A review. Int J Electrochem Sci. 2008;3:1–28.
   Web of Science ®Google Scholar
• Trivedi R, Sen P, Dutta P, et al. Optical second harmonic generation in polyazomethine ether. Nonlinear Opt (Mclc) Sect B. 2002;29: 51–59.
   Google Scholar
• Iwan A, Sek D. Processible polyazomethines and polyketanils: from aerospace to light-emitting diodes and other advanced applications. Prog Polym Sci. 2008;33:289–345.
   Web of Science ®Google Scholar
• Zhang B-Y, Meng F-B, Tian M, et al. Side-chain liquid-crystalline polysiloxanes containing ionic mesogens and cholesterol ester groups. React Funct Polym. 2006;66:551–558.
   Web of Science ®Google Scholar
• Nesrullajev A, Bilgin-Eran B. Mesomorphic, morphologic and thermotropic properties of 4-hexyl-N-(4-hexadecyloxysalicylidene) aniline. Mater Chem Phys. 2005;93:21–25.
   Web of Science ®Google Scholar
• Yasa-Sahin O, Yazici O, Karaagac B, et al. A new liquid crystal of considerable value for the separation of closely related solvents by gas chromatography. Liq Cryst. 2010;37:1111–1118.
   Web of Science ®Google Scholar
• Canli NY, Günes S, Pivrikas A, et al. (S)-5-octyloxy-2-[{4-(2-methylbuthoxy)-phenylimino}-methyl]-phenol liquid crystalline compound as additive into polymer solar cells. Sol Energy Mater Sol Cells. 2010;94:1089–1099.
   Web of Science ®Google Scholar
• Gulbas H, Coskun D, Gursel Y, et al. Synthesis, characterization and mesomorphic properties of side chain liquid crystalline oligomer having schiff base type mesogenic group. Adv Mater Lett. 2014;5:333–338.
   Google Scholar
• Iftime -M-M, Cozan V, Airinei A, et al. Asymmetric azomethine amines with azobenzene moieties–liquid crystalline and optical properties. Liq Cryst. 2019;46:1584–1594.
   Web of Science ®Google Scholar
• Fritsch L, Lavayen V, Merlo AA. Photochemical behaviour of Schiff base liquid crystals based on isoxazole and isoxazoline ring. A kinetic approach. Liq Cryst. 2018;45:1802–1812.
   Web of Science ®Google Scholar
• Ge L-N, Xian S-W, Huang Y, et al. Synthesis and mesomorphism of novel multi-arm liquid crystals with cholic acid as chiral centre linking Schiff base moieties as mesogens. Liq Cryst. 2018;45:1055–1067.
   Web of Science ®Google Scholar
• Mohammad A-T, Al-Mohammedi MH, Ghdhayeb MZ, et al. Coumarin dimers of benzidine and phenylenediamine cores: synthesis, characterisation and mesomorphic properties. Liq Cryst. 2020;47:414–422.
   Web of Science ®Google Scholar
• Paterson DA, Crawford CA, Pociecha D, et al. The role of a terminal chain in promoting the twist-bend nematic phase: the synthesis and characterisation of the 1-(4-cyanobiphenyl-4′-yl)-6-(4-alkyloxyanilinebenzylidene-4′-oxy) hexanes. Liq Cryst. 2018;45:2341–2351.
   Web of Science ®Google Scholar
• Abberley JP, Killah R, Walker R, et al. Heliconical smectic phases formed by achiral molecules. Nat Commun. 2018;9:228.
   PubMed Web of Science ®Google Scholar
• Walker R, Pociecha D, Strachan GJ, et al. Molecular curvature, specific intermolecular interactions and the twist-bend nematic phase: the synthesis and characterisation of the 1-(4-cyanobiphenyl-4′-yl)-6-(4-alkylanilinebenzylidene-4′-oxy) hexanes (CB6O. m). Soft Matter. 2019;15:3188–3197.
   PubMed Web of Science ®Google Scholar
• Hird M, Toyne KJ, Gray GW, et al. The relationship between molecular structure and mesomorphic properties of 2, 2′-and 3, 2′-difluoroterphenyls synthesized by palladium-catalysed cross-couplings. Liq Cryst. 1995;18:1–11.
   Web of Science ®Google Scholar
• Sugiura H, Saklrai Y, Masuda Y, et al. The substituent effect on mesomorphic properties of 4-octyloxyphenyl 4-(4-R-3-nitrobenzoyloxy) benzoates and 4-(4-octyloxybenzoyloxy) phenyl 4-R-3-nitrobenzoates. Liq Cryst. 1991;9:441–450.
   Web of Science ®Google Scholar
• Masuda Y, Sakurai Y, Sugiura H, et al. The effect of a lateral substituent on the mesomorphic properties of 4-cyanophenyl 4-(4-alkyloxybenzoyloxy) benzoates. Liq Cryst. 1991;10:623–634.
   Web of Science ®Google Scholar
• Dabrowski R, Bezborodov V, Lapanik V, et al. Mesomorphic properties of phenyl 4-(5-alkyl-1, 3, 2-dioxaborin-2-yl) benzoates Influence of terminal and lateral substitution. Liq Cryst. 1995;18:213–218.
   Web of Science ®Google Scholar
• Imrie CT, Henderson PA. Liquid crystal dimers and oligomers. Curr Opin Colloid Interface Sci. 2002;7:298–311.
   Web of Science ®Google Scholar
• Salamończyk M, Vaupotič N, Pociecha D, et al. Multi-level chirality in liquid crystals formed by achiral molecules. Nat Commun. 2019;10:1922.
   PubMed Web of Science ®Google Scholar
• Abberley JP, Storey JM, Imrie CT. Structure-property relationships in azobenzene-based twist-bend nematogens. Liq Cryst. 2019;46:2102–2114.
   Web of Science ®Google Scholar
• Saad GR, Ahmed NH, Fahmi AA, et al. Influence of lateral methyl and terminal substituents on the mesophase behaviour of four rings azo-ester liquid crystal compounds. Liq Cryst. 2019;46:1285–1297.
   Web of Science ®Google Scholar
• Saad GR, Ahmed NH, Fahmi AA, et al. Effect of orientation of lateral methyl substituent on the thermal behaviour of the mesophase in binary systems of 4-substituted phenyl 4ʹ-(4”-alkoxy phenylazo) benzoates. Liq Cryst. 2018;45:1177–1185.
   Web of Science ®Google Scholar
• Hagar M, Ahmed H, Saad G. Mesophase stability of new Schiff base ester liquid crystals with different polar substituents. Liq Cryst. 2018;45:1324–1332.
   Web of Science ®Google Scholar
• Hagar M, Ahmed HA, Saad GR. Synthesis and mesophase behaviour of Schiff base/ester 4-(arylideneamino)phenyl-4″-alkoxy benzoates and their binary mixtures. J Mol Liq. 2019;273:266–273.
   Web of Science ®Google Scholar
• Chen R, An Z, Wang W, et al. Lateral substituent effects on UV stability of high-birefringence liquid crystals with the diaryl-diacetylene core: DFT/TD-DFT study. Liq Cryst. 2017;44:1515–1524.
   Web of Science ®Google Scholar
• Ahmed HA, Hagar M, Saad G. Impact of the proportionation of dialkoxy chain length on the mesophase behaviour of schiff base/ester liquid crystals; experimental and theoretical study. Liq Cryst. 2019;46:1611–1620.
   Web of Science ®Google Scholar
• Paterson DA, Gao M, Kim Y-K, et al. Understanding the twist-bend nematic phase: the characterisation of 1-(4-cyanobiphenyl-4′-yloxy)-6-(4-cyanobiphenyl-4′-yl) hexane (CB6OCB) and comparison with CB7CB. Soft Matter. 2016;12:6827–6840.
   PubMed Web of Science ®Google Scholar
• Sarkar DD, Deb R, Chakraborty N, et al. Cholesterol-based dimeric liquid crystals: synthesis, mesomorphic behaviour of frustrated phases and DFT study. Liq Cryst. 2013;40:468–481.
   Web of Science ®Google Scholar
• Majumdar K, Mondal S, Sinha RK. Synthesis and characterization of novel cholesterol based mesogenic compounds using ‘click’chemistry. New J Chem. 2010;34:1255–1260.
   Web of Science ®Google Scholar
• Al-Mutabagani LA, Alshabanah LA, Ahmed HA, et al. New symmetrical U-and wavy-shaped supramolecular H-bonded systems; geometrical and mesomorphic approaches. Molecules. 2020;25:1420.
   Web of Science ®Google Scholar
• Abdullah Alshabanah L, Al-Mutabagani LA, Ahmed HA, et al. Induced wide nematic phase by seven-ring supramolecular H-bonded systems: experimental and computational evaluation. Molecules. 2020;25:1694.
   Web of Science ®Google Scholar
• Yeap G-Y, Osman F, Imrie CT. Non-symmetric dimers: effects of varying the mesogenic linking unit and terminal substituent. Liq Cryst. 2015;42:543–554.
   Web of Science ®Google Scholar
• Henderson PA, Seddon JM, Imrie CT. Methylene‐and ether‐linked liquid crystal dimers II. Effects of mesogenic linking unit and terminal chain length. Liq Cryst. 2005;32:1499–1513.
   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 α-(4-benzylidene-substituted-aniline-4′-oxy)-ω-[pentyl-4-(4′-phenyl) benzoateoxy] hexane. Phase Transitions. 2011;84:29–37.
   Web of Science ®Google Scholar
• Attard G, Date R, Imrie CT, 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. Liq Cryst. 1994;16:529–581.
   Web of Science ®Google Scholar
• Imrie C, Karasz F, Attard G. Comparison of the mesogenic properties of monomeric, dimeric, and side-chain polymeric liquid crystals. Macromolecules. 1993;26:545–550.
   Web of Science ®Google Scholar
• Donaldson T, Staesche H, Lu Z, et al. Symmetric and non-symmetric chiral liquid crystal dimers. Liq Cryst. 2010;37:1097–1110.
   Web of Science ®Google Scholar
• Henderson PA, Niemeyer O, Imrie CT. Methylene-linked liquid crystal dimers. Liq Cryst. 2001;28:463–472.
   Web of Science ®Google Scholar
• Henderson PA, Imrie CT. Methylene-linked liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2011;38:1407–1414.
   Web of Science ®Google Scholar
• Paterson DA, Abberley JP, Harrison WT, et al. Cyanobiphenyl-based liquid crystal dimers and the twist-bend nematic phase. Liq Cryst. 2017;44:127–146.
   Web of Science ®Google Scholar
• Sharma D, Tiwari S. Comparative computational analysis of electronic structure, MEP surface and vibrational assignments of a nematic liquid crystal: 4-n-methyl-4´-cyanobiphenyl. J Mol Liq. 2016;214:128–135.
   Web of Science ®Google Scholar
• Tiwari S, Sharma D. Electronic structure nd nano-range pair potential studies of a smectic liquid crystal: 4-n-nonyloxy-4́-cyanobiphenyl. Mater Today Proc. 2018;5:9051–9060.
   Google Scholar
• Ahmed H, Hagar M, El-Sayed T, et al. Schiff base/ester liquid crystals with different lateral substituents: mesophase behaviour and DFT calculations. Liq Cryst. 2019;46:1156–1166.
   Web of Science ®Google Scholar
• Nafee SS, Hagar M, Ahmed HA, et al. New two rings Schiff base liquid crystals; ball mill synthesis, mesomorphic, Hammett and DFT studies. J Mol Liq. 2020;299:112161.
   Web of Science ®Google Scholar
• Ahmed NH, Saad GR, Ahmed HA, et al. New wide-stability four-ring azo/ester/Schiff base liquid crystals: synthesis, mesomorphic, photophysical, and DFT approaches. RSC Adv. 2020;10:9643–9656.
   PubMed Web of Science ®Google Scholar
• Hagar M, Ahmed H, Alhaddadd O. DFT calculations and mesophase study of coumarin esters and its azoesters. Crystals. 2018;8:359.
   Web of Science ®Google Scholar
• Goodby JW. Nano-objects-sculpting and shape in molecular material design (The Pierre Gilles de Gennes ILCS prize lecture). Liq Cryst. 2019;46:1901–1924.
   Web of Science ®Google Scholar
• Imrie C, Taylor L. The preparation and properties of low molar mass liquid crystals possessing lateral alkyl chains. Liq Cryst. 1989;6:1–10.
   Web of Science ®Google Scholar