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Liquid Crystals Volume 44, 2017 - Issue 12-13: A Festschrift in honour of Professor John William Goodby FRS; Guest Editor: Stephen Cowling
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Invited Article

Azobenzene-based liquid crystal dimers and the twist-bend nematic phase

Daniel A. PatersonDepartment of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, Aberdeen, UKView further author information
,
Rebecca WalkerDepartment of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, Aberdeen, UKView further author information
,
Jordan P. AbberleyDepartment of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, Aberdeen, UKView further author information
,
Jérémy ForestierDepartment of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, Aberdeen, UKView further author information
,
William T. A. HarrisonDepartment of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, Aberdeen, UKView further author information
,
John M. D. StoreyDepartment of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, Aberdeen, UKView further author information
,
Damian PociechaDepartment of Chemistry, University of Warsaw, Warsaw, PolandView further author information
,
Ewa GoreckaDepartment of Chemistry, University of Warsaw, Warsaw, PolandView further author information
&
Corrie T. ImrieDepartment of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, Aberdeen, UKCorrespondence[email protected]
View further author information
 show all
Pages 2060-2078 | Received 22 Jul 2017, Published online: 06 Oct 2017

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Mahima Rabari, Chetna Koli & A. K. Prajapati. (2024) Synthesis, characterization, mesogenic properties, and DFT studies of unsymmetrical liquid crystalline dimers of biphenyl. Soft Materials 22:1, pages 1-12.
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Mahima Rabari, Yuvrajsinh Parmar & A. K. Prajapati. (2023) Unsymmetrical liquid crystalline dimers containing biphenyl moiety: synthesis, characterisation, mesomorphic study and DFT studies. Liquid Crystals 50:15, pages 2552-2570.
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Yuki Arakawa, Kyohei Horita & Kazunobu Igawa. (2023) Phase behaviour of ester-linked cyanobiphenyl dimers and fluorinated analogues: the direct isotropic to twist-bend nematic phase transition. Liquid Crystals 50:13-14, pages 2216-2228.
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Naila Tufaha, Calum J. Gibb, John M. D. Storey & Corrie T. Imrie. (2023) Can even-membered liquid crystal dimers exhibit the twist-bend nematic phase? The preparation and properties of disulphide and thioether linked dimers. Liquid Crystals 50:7-10, pages 1362-1374.
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AbdulKarim-Talaq Mohammad, Khalil T. Hassan & Dhurgham Ali Hameed. (2023) Liquid crystalline behaviour of new dimers containing coumarin and biphenyl moieties and enhancement of their thermal conductivity: liquid crystal-nanoparticles. Liquid Crystals 50:5, pages 881-890.
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Mohamed H. Ali, Gamal R. Saad, Nagwa H.S. Ahmed & Abdelgawad A. Fahmi. (2023) Synthesis and physico-chemical properties of dilateral flouro azo/ester four aromatic ring mesogens and their mixtures of liquid crystals. Liquid Crystals 50:5, pages 737-753.
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Daniel A. Paterson, Rebecca Walker, John M. D. Storey & Corrie T. Imrie. (2023) Molecular structure and the twist-bend nematic phase: the role of spacer length in liquid crystal dimers. Liquid Crystals 50:4, pages 725-736.
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Abdelgawad A. Fahmi, Gamal R. Saad, Mohamed H. Ali & Nagwa H.S. Ahmed. (2022) Steric effect of di-lateral methyl substituent on the mesophase behavior of four-ring azo/ester/azo homologues. Liquid Crystals 49:11, pages 1511-1523.
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Rebecca Walker, Damian Pociecha, Camilla Faidutti, Eva Perkovic, John M. D. Storey, Ewa Gorecka & Corrie T. Imrie. (2022) Remarkable stabilisation of the intercalated smectic phases of nonsymmetric dimers by tert-butyl groups. Liquid Crystals 49:7-9, pages 969-981.
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Nagwa H.S. Ahmed, Gamal R. Saad, Abdelgawad A. Fahmi & Ahmed M. Abdelfattah. (2022) Synthesis and mesomorphic properties of laterally fluoro azo/ ester based on four ring compounds with a wide range mesophase thermal stability. Liquid Crystals 49:5, pages 666-678.
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Yuan-Yuan Gao, Xin-yi Wan, Ze-long Feng, Lu-xin Fang, Xin-shi Chen, Ying-Gang Jia & Mei Tian. (2022) The influence of fluorine terminal group and flexible spacers on properties of the liquid crystal dimers. Liquid Crystals 49:3, pages 380-391.
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Kanubhai D. Katariya, Kiran J. Nakum & Mohamed Hagar. (2022) New fluorinated azo/schiff base liquid crystals: synthesis, characterisation, mesomorphic study and DFT calculations. Liquid Crystals 49:3, pages 312-326.
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Mohamed A. El-Atawy, Omaima. A. Alhaddad & Hoda A. Ahmed. (2021) Experimental and geometrical structure characterizations of new synthesized laterally fluorinated nematogenic system. Liquid Crystals 48:15, pages 2106-2116.
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Qing-Qing He, Zi-Yun Zhang, Chun-Yang Li, Ya-Ping Liu, Ji-Wen Hu, Xin-Jiao Wang, Ying-Gang Jia, Mei Tian & Dan-Shu Yao. (2021) Synthesis and mesomorphic properties of new azo H-shaped liquid crystal compounds. Liquid Crystals 48:14, pages 1992-2001.
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Hoda A. Ahmed & Mohamed A. El-Atawy. (2021) Synthesis, mesomorphic and geometrical approaches of new non-symmetrical system based on central naphthalene moiety. Liquid Crystals 48:14, pages 1940-1952.
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Muna S. Khushaim, Hafsa H. Alalawy, Magdi M. Naoum & Hoda A. Ahmed. (2021) Experimental and computational simulations of nematogenic liquid crystals based on cinnamic acid in pure and mixed state. Liquid Crystals 48:11, pages 1493-1504.
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Nagwa H.S. Ahmed & Gamal R. Saad. (2021) Effect of replacing the terminal phenyl ring with 3-pyridyl and inversion of imine linkage on the mesophase behaviour of four-ring azo/ester/Schiff base compounds. Liquid Crystals 48:9, pages 1217-1230.
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Yuki Arakawa, Kenta Komatsu, Yuko Ishida & Hideto Tsuji. (2021) Thioether-linked azobenzene-based liquid crystal dimers exhibiting the twist-bend nematic phase over a wide temperature range. Liquid Crystals 48:5, pages 641-652.
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Haozhou Huang, Yuehua Cong, Bing Hu & Baoyan Zhang. (2021) Liquid-crystalline dimers containing cholesteryl groups and azobenzene moieties with branched allyl chain: synthesis and properties. Liquid Crystals 48:4, pages 564-578.
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H. A. Ahmed, Eman Mansour & Mohamed Hagar. (2020) Mesomorphic study and DFT simulation of calamitic Schiff base liquid crystals with electronically different terminal groups and their binary mixtures. Liquid Crystals 47:14-15, pages 2292-2304.
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Aya M. Abdelrahman, Nagwa H. S. Ahmed, Abdelgwad A. Fahmi, Gamal R. Saad & Magdi M. Naoum. (2020) Synthesis and mesophase behaviour of four-ring azo-ester-azo compounds bearing two-terminal alkoxy groups in different lengths and proportions. Liquid Crystals 47:12, pages 1772-1783.
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Jordan P. Abberley, Rebecca Walker, John M. D. Storey & Corrie T. Imrie. (2020) Molecular structure and the twist-bend nematic phase: the role of terminal chains. Liquid Crystals 47:8, pages 1232-1245.
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Xin-Shi Chen, Zhi-Xin Xu, Zhu Chen, Lan-Rui Bai, Xiang-Yu Zang, Yu-Nong Li, Dan-Shu Yao, Ying-Gang Jia & Mei Tian. (2020) The effect of molecular structure on mesophase behaviour of non-symmetric liquid crystal dimers containing mandelic acid and fluorine group. Liquid Crystals 47:7, pages 1055-1069.
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Mohamed Alaasar & Silvio Poppe. (2020) Cybotactic nematic phases with wide ranges in photoresponsive polycatenars. Liquid Crystals 47:6, pages 939-949.
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H.A. Ahmed, M. Hagar & O.A. Alhaddad. (2020) Mesomorphic and geometrical orientation study of the relative position of fluorine atom in some thermotropic liquid crystal systems. Liquid Crystals 47:3, pages 404-413.
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Rebecca Walker. (2020) The twist-bend phases: structure–property relationships, chirality and hydrogen-bonding. Liquid Crystals Today 29:1, pages 2-14.
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Ahmed A. Sultan, Abdelgawad A. Fahmi, Gamal R. Saad & Magdi M. Naoum. (2019) Effect of orientation of lateral fluorine atom on the mesophase behaviour of azo/ester molecules with terminal naphthyl group. Liquid Crystals 46:15, pages 2322-2333.
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Ahmed M. Sultan, Abdelgawad A. Fahmi, Gamal R. Saad & Magdi M. Naoum. (2019) Effect of orientation of extra fused benzene ring and lateral methyl substituent on the mesophase behaviour of three-ring azo/ester molecules. Liquid Crystals 46:15, pages 2269-2280.
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M. Hagar, H. A. Ahmed & O. A. Alhaddad. (2019) New azobenzene-based natural fatty acid liquid crystals with low melting point: synthesis, DFT calculations and binary mixtures. Liquid Crystals 46:15, pages 2223-2234.
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Jordan P. Abberley, John M. D. Storey & Corrie T. Imrie. (2019) Structure-property relationships in azobenzene-based twist-bend nematogens. Liquid Crystals 46:13-14, pages 2102-2114.
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Wen Zeng, Wan-Hong Zhang & Ying-Gang Jia. (2019) Synthesis of novel (-)-menthol-based azobenzene chiral liquid crystals and effect of terminal alkyl chains on mesomorphic behaviour. Liquid Crystals 46:12, pages 1889-1898.
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Ying Liu, Sheng Gao, Xinjian Gong, Qingbin Xue & Zaijun Lu. (2019) Benzoxazine-epoxy thermosets with smectic phase structures for high thermal conductive materials. Liquid Crystals 46:11, pages 1686-1695.
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Nagwa H.S. Ahmed, Gamal R. Saad & Magdi M. Naoum. (2019) Effect of lateral bromo substituent on the phase behavior of four-ring azo/ester/azo liquid crystalline materials. Liquid Crystals 46:11, pages 1631-1642.
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Ewan Cruickshank, Mirosław Salamończyk, Damian Pociecha, Grant J. Strachan, John M. D. Storey, Cheng Wang, Jun Feng, Chenhui Zhu, Ewa Gorecka & Corrie T. Imrie. (2019) Sulfur-linked cyanobiphenyl-based liquid crystal dimers and the twist-bend nematic phase. Liquid Crystals 46:10, pages 1595-1609.
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Manuela-Maria Iftime, Vasile Cozan, Anton Airinei, Cristian Varganici, Gabriela Ailiesei, Daniel Timpu & Ion Sava. (2019) Asymmetric azomethine amines with azobenzene moieties – liquid crystalline and optical properties. Liquid Crystals 46:10, pages 1584-1594.
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Wei Zhang & Mei Tian. (2019) The influence of flexible spacer and the chirality of the core on the formation of chiral nematic phase of symmetric dimers containing trifluoromethyl terminal. Liquid Crystals 46:9, pages 1452-1466.
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M. Hagar, H. A. Ahmed & O. A. Alhaddad. (2019) Experimental and theoretical approaches of molecular geometry and mesophase behaviour relationship of laterally substituted azopyridines. Liquid Crystals 46:9, pages 1440-1451.
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Sergio A. A. Sanches, Wallison C. Costa, Ivan H. Bechtold, Renato A. P. Halfen, Aloir A. Merlo & Leandra F. Campo. (2019) Bromine-terminated azobenzene liquid crystals. Liquid Crystals 46:5, pages 655-665.
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Giovanni Barbero & Ioannis Lelidis. (2019) Fourth-order nematic elasticity and modulated nematic phases: a poor man’s approach. Liquid Crystals 46:4, pages 535-542.
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Daniel A. Paterson, Catriona A. Crawford, Damian Pociecha, Rebecca Walker, John M.D. Storey, Ewa Gorecka & Corrie T. Imrie. (2018) 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. Liquid Crystals 45:13-15, pages 2341-2351.
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Efthymia Ramou, Chris Welch, James Hussey, Ziauddin Ahmed, Panagiota K. Karahaliou & Georg H. Mehl. (2018) The induction of the Ntb phase in mixtures. Liquid Crystals 45:13-15, pages 1929-1935.
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Xuenan Zong, Zhiming Fang & Changcheng Wu. (2018) Synthesis and mesomorphic properties of a series of dimers derived from thioether-terminated and cholesteryl. Liquid Crystals 45:12, pages 1844-1853.
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Liang Dong, Zhi-xin Xu, He-zhong Tao, Xin-shi Chen, Jian-she Hu, Dan-shu Yao & Mei Tian. (2018) Non-symmetric chiral nematic liquid crystal dimers containing trifluoromethyl and 1,2-propanediol. Liquid Crystals 45:12, pages 1734-1745.
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AbdulKarim-Talaq Mohammad, Rusul Yousif Alwari, Hosapalya Thimmaiah Srinivasa, Suaad Mohammed Husain Al-Majidi & Othman Ibraheem Alajrawy. (2018) Preparation, spectral and thermal properties of new Isoflavone derivatives: mesomorphic properties and DFT studies. Liquid Crystals 45:11, pages 1699-1710.
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Nagwa H.S. Ahmed, Gamal R. Saad & Magdi M. Naoum. (2018) Effect of position of the lateral fluoro substituent on the mesophase behaviour of aryl 4-alkoxyphenylazo benzoates in pure and binary mixtures. Liquid Crystals 45:10, pages 1487-1497.
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Yuki Arakawa, Takuma Shiba & Kazunobu Igawa. Selenium-linked cyanobiphenyl-based liquid crystal dimers: the effects of chalcogen linkage and spacer length on the twist-bend nematic phase. Liquid Crystals 0:0, pages 1-17.
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Zhimin Wang, Ruyue Sun, Jianqiang Xie & Xiangkai Zhang. Influence of the length of end-group double bond substituents on the temperature change of phase transition in liquid crystals. Liquid Crystals 0:0, pages 1-5.
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Fang-Yuan Li, Zhi-Na Ji, Xin-Yu Zhang, Meng-Shu Li, Wen-Xiu Wang, Dan-Shu Yao & Mei Tian. Effects of polar end group, flexible spacer length and molecular conformation on properties of the liquid crystal dimers. Liquid Crystals 0:0, pages 1-15.
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Articles from other publishers (7)

Corrie T. Imrie, Rebecca Walker, John M. D. Storey, Ewa Gorecka & Damian Pociecha. (2022) Liquid Crystal Dimers and Smectic Phases from the Intercalated to the Twist-Bend. Crystals 12:9, pages 1245.
Crossref
Fowzia S. Alamro, Hoda A. Ahmed, Mohamed A. El-Atawy, Salma A. Al-Zahrani & Alaa Z. Omar. (2021) Induced Nematic Phase of New Synthesized Laterally Fluorinated Azo/Ester Derivatives. Molecules 26:15, pages 4546.
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Laila A. Al-Mutabagani, Latifah A. Alshabanah, Hoda A. Ahmed & Mohamed A. El-Atawy. (2021) Synthesis, Optical and DFT Characterizations of Laterally Fluorinated Phenyl Cinnamate Liquid Crystal Non-Symmetric System. Symmetry 13:7, pages 1145.
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Laila A. Al-Mutabagani, Latifah Abdullah Alshabanah, Hoda A. Ahmed, Khulood A. Abu Al-Ola & Mohamed Hagar. (2020) New Rod-Like H-Bonded Assembly Systems: Mesomorphic and Geometrical Aspects. Crystals 10:9, pages 795.
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Rebecca Walker, Damian Pociecha, Alfonso Martinez-Felipe, John MD Storey, Ewa Gorecka & Corrie T Imrie. (2020) Twist-Bend Nematogenic Supramolecular Dimers and Trimers Formed by Hydrogen Bonding. Crystals 10:3, pages 175.
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Alnoman, Al-Nazawi, Ahmed & Hagar. (2019) Synthesis, Optical, and Geometrical Approaches of New Natural Fatty Acids’ Esters/Schiff Base Liquid Crystals. Molecules 24:23, pages 4293.
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K. Merkel, C. Welch, Z. Ahmed, W. Piecek & G. H. Mehl. (2019) Dielectric response of electric-field distortions of the twist-bend nematic phase for LC dimers. The Journal of Chemical Physics 151:11.
Crossref

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