Mesogenic behaviour of p-nitrophenyl group linked with biphenyl mesogens via flexible spacers

References

• Gray , GW. 1962 . Molecular structure and the properties of liquid crystals , London : Academic Press .
   Google Scholar
• Matsunaga , Y. 1997 . “ Molecular geometry and liquid crystalline behavior ” . In Chemistry of liquid crystals , Edited by: Inoue , C , Koide , N , Kusabayashi , S , Nohira , H , Furukawa , K and Matsunaga , Y . 17 – 28 . Tokyo : Chemical Society of Japan .
   Google Scholar
• Demus , D. 1998 . “ Chemical structure and mesogenic properties ” . In Handbook of liquid crystals , 2nd , Edited by: Demus , D , Goodby , J , Gray , GW , Spiess , HW and Vill , V . Vol. 1 , 133 – 187 . Weinheim : Wiley-VCH .
   Google Scholar
• Chiang , YH , Ames , AE , Gaudiana , RA and Adams , TG. 1991 . Study of tails in smectic liquid-crystals. 1: the effect of fluorocarbon hydrocarbon ether tails on phenyl ester biphenyl cores . Mol Cryst Liq Cryst , 208 : 95 – 98 .
   Google Scholar
• Bao , XJ and Dix , LR. 1996 . Smectic phases observed in 1,1,2,2-tetrahydroalkyl-4-nitrobenzoates . Mol Cryst Liq Cryst , 281 : 291 – 294 .
   Web of Science ®Google Scholar
• Johansson , G , Percec , V , Ungar , G and Smith , K. 1997 . Fluorophobic effect generates a systematic approach to the synthesis of the simplest class of rodlike liquid crystals containing a single benzene unit . Chem Mater , 9 : 164 – 175 .
   Web of Science ®Google Scholar
• Okamoto , S , Murai , H and Takenaka , S. 1997 . Liquid-crystalline properties of alkyl 4-[2-(perfluorooctyl) ethoxy] benzoates . Bull Chem Soc Jpn , 70 : 3163 – 3166 .
   Web of Science ®Google Scholar
• Duan , M , Okamoto , H , Petrov , VF and Takenaka , S. 1998 . A new mesomorphism of the alkyl 4-(2-perfluoroalkyl) ethoxybenzoate derivatives . Bull Chem Soc Jpn , 71 : 2735 – 2739 .
   Web of Science ®Google Scholar
• Duan , M , Okamoto , H , Petrov , VF and Takenaka , S. 1999 . Liquid-crystalline properties of dissymmetric molecules part 3: smectic properties of 4-[2-(perfluoroalkyl) ethoxy]-substituted nitrobenzenes and benzonitriles . Bull Chem Soc Jpn , 72 : 1637 – 1642 .
   Web of Science ®Google Scholar
• Yang , XT , Abe , K , Kato , R , Yano , S , Kato , T , Miyazawa , K and Takeuchi , H. 1999 . Mesomorphic phase transitions and electro-optical properties of benzyl fluoroalkyl ether derivatives . Liq Cryst , 26 : 1485 – 1491 .
   Web of Science ®Google Scholar
• Duan , M , Tasaka , T , Okamoto , H , Petrov , VF and Takenaka , S. 2000 . Liquid crystalline properties of dissymmetric molecules IV: the substituent effect on thermal properties of nematic and smectic A phases in three aromatic ring systems with ester linkages . Liq Cryst , 27 : 1195 – 1205 .
   Web of Science ®Google Scholar
• Andruzzi , L , D'Apollo , F , Galli , G and Gallot , B. 2001 . Synthesis and structure characterization of liquid crystalline polyacrylates with unconventional fluoroalkylphenyl mesogens . Macromolecules , 34 : 7707 – 7714 .
   Web of Science ®Google Scholar
• Fornasieri , G , Guittard , F and Geribaldi , S. 2003 . Influence of the structure of the mesogenic core on the thermotropic properties of omega-unsaturated fluorinated liquid crystals . Liq Cryst , 30 : 251 – 257 .
   Web of Science ®Google Scholar
• Fornasieri , G , Guittard , F and Geribaldi , S. 2003 . Microphasic separation-induced enantiotropic liquid crystal behaviour single phenyl unit series based on the fluorophobic effect . Liq Cryst , 30 : 663 – 669 .
   Web of Science ®Google Scholar
• Fornasieri , G , Guittard , F and Geribaldi , S. 2004 . Nitro and bromo derivatives of a highly fluorinated thiobenzoate . Liq Cryst , 31 : 491 – 495 .
   Web of Science ®Google Scholar
• Caillier , L , Guittard , F and de Givenchy Geribaldi , S . 2005 . LC acrylic monomers incorporating monothiobenzoate unit . Mol Cryst Liq Cryst , 437 : 1315 – 1325 .
   Web of Science ®Google Scholar
• Hori , K , Maeda , M , Yano , M and Kunugi , M. 2011 . The effect of fluorination (2): dependence of alkyl chain length on the crystal structures of mesogenic alkyl 4-[2-(perfluorohexyl) ethoxy] benzoates . Liq Cryst , 38 : 287 – 293 .
   Web of Science ®Google Scholar
• Kishikawa , K , Inoue , T , Sasaki , Y , Aikyo , S , Takahashi , M and Kohmoto , S. 2011 . Generation of biaxiality in smectic A phases by introduction of intermolecular perfluoroarene-arene and C-H/F interactions, and the non-odd-even effect of the molecules in their transition temperatures and layer distances . Soft Matter , 7 : 7532 – 7538 .
   Web of Science ®Google Scholar
• Gray , GW and Harrison , KJ. 1971 . Liquid crystalline properties of alkyl, aryl, and arylalkyl 4-(p-substituted benzylidenamino) cinnamates and α-methylcinnamates . Mol Cryst Liq Cryst , 13 : 37 – 60 .
   Web of Science ®Google Scholar
• Coates , D and Gray , GW. 1975 . New smectic polymorphic behavior in homologous series of mesogens . J Phys (Paris) Colloq , : 365 – 374 .
   Google Scholar
• Berardi , R , Muccioli , L and Zannoni , C. 2004 . Can nematic transitions be predicted by atomistic simulations? A computational study of the odd even effect . Chem Phys Chem , 5 : 104 – 111 .
   Web of Science ®Google Scholar
• Ennulat , RD and Brown , AJ. 1971 . Mesomorphism of homologous series . II: odd-even effect. Mol Cryst Liq Cryst , 12 : 367 – 378 .
   Web of Science ®Google Scholar
• Itahara , T. 2005 . Effect of the pentafluorophenoxy group on liquid crystalline behaviours . Liq Cryst , 32 : 115 – 118 .
   Web of Science ®Google Scholar
• Imrie , CT and Henderson , PA. 2007 . Liquid crystal dimers and higher oligomers: between monomers and polymers . Chem Soc Rev , 36 : 2096 – 2124 .
   PubMed Web of Science ®Google Scholar
• Imrie , CT and Henderson , PA. 2002 . Liquid crystal dimers an oligomers . Curr Opin Colloid Interface Sci , 7 : 298 – 311 .
   Web of Science ®Google Scholar
• Imrie , CT , Henderson , PA and Yeap , GY. 2009 . Liquid crystal oligomers: going beyond dimers . Liq Cryst , 36 : 567 – 605 .
   Web of Science ®Google Scholar
• Itahara , T. 2010 . Effects of combining of different flexible spacers in liquid crystal trimers and teramers on transition properties . Liq Cryst , 37 : 1157 – 1163 .
   Web of Science ®Google Scholar
• Donaldson , T , Henderson , PA , Achard , MF and Imrie , CT. 2011 . Non-symmetric chiral liquid crystal trimers . Liq Cryst , 38 : 1331 – 1339 .
   Web of Science ®Google Scholar
• Tamba , MG , Bobrovsky , A , Shibaev , V , Peizi , G , Baumeister , U and Weissflog , W. 2011 . Photochromic azobenzenefunctionalised banana-calamitic dimers and trimers: mesophasebehaviour and photo-orientationalphenomena . Liq Cryst , 38 : 1531 – 1550 .
   Web of Science ®Google Scholar
• Achalkumar , AS , Hiremath , US , Rao , DSS and Yelamaggad , CV. 2011 . Non-conventional liquid crystals: synthesis and mesomorphism of non-symmetric trimers and teramers derived from cholesterol . Liq Cryst , 38 : 1563 – 1589 .
   Web of Science ®Google Scholar
• Majumdar , KC , Shyam , PK , Rao , DSS and Prasad , SK. 2012 . Oxadiazole-based non-symmetric liquid crystalline trimers terminating with ferrocene and cholesterol units exhibiting TGBC* phase over a wide thermal range . Liq Cryst , 39 : 1117 – 1123 .
   Web of Science ®Google Scholar
• Itahara , T and Tamura , H. 2007 . Comparison of liquid-crystalline properties of symmetric and nonsymmetric liquid crystal trimers . Mol Cryst Liq Cryst , 102 : 17 – 27 .
   Google Scholar
• Donaldson , T , Staesche , H , Lu , ZB , Henderson , PA , Achard , MF and Imrie , CT. 2010 . Symmetric and non-symmetric chiral liquid crystal dimers . Liq Cryst , 37 : 1097 – 1110 .
   Web of Science ®Google Scholar
• Henderson , PA , Niemeyer , O and Imrie , CT. 2001 . Methylene-linked liquid crystal dimers . Liq Cryst , 28 : 463 – 472 .
   Web of Science ®Google Scholar
• Henderson , PA , Cook , AG and Imrie , CT. 2004 . Oligomeric liquid crystals: from monomers to trimers . Liq Cryst , 31 : 1427 – 1434 .
   Web of Science ®Google Scholar
• Emsley , JE , Luckhurst , GR , Shilstone , GN and Sage , I. 1984 . The preparation and properties of the α, ω-bis(4,4′-cyanobiphenyloxy) alkanes: nematogenic molecules with a flexible core . Mol Cryst Liq Cryst , 102 : 223 – 233 .
   Web of Science ®Google Scholar
• Imrie , CT and Luckhurst , GR. 1998 . Liquid crystal trimers. The synthesis and characterization of the 4,4′-bis[ω-(4-cyanobiphenyl-4′-yloxy) alkoxy] biphenyls . J Mater Chem , 8 : 1339 – 1343 .
   Web of Science ®Google Scholar
• Imrie , CT. 2006 . Non-symmetric liquid crystal dimers: how to make molecules intercalate . Liq Cryst , 33 : 1449 – 1454 .
   Web of Science ®Google Scholar
• Yeap , GY , Hng , TC , Yeap , SY , Gorecka , E , Ito , MM , Ueno , K , Okamoto , M , Mahmood , WAK and Imrie , CT. 2009 . Why do non-symmetric dimers intercalate? The synthesis and characterization of the (4-benzylidene-substituted-aniline-4′-oxy)-(2-methylbutyl-4′-(4′′-phenyl)benzoateoxy) alkanes . Liq Cryst , 36 : 1431 – 1441 .
   Web of Science ®Google Scholar
• Imrie , CT , Henderson , PA and Seddon , JM. 2004 . Non-symmetric liquid crystal trimers: the first example of a triply-intercalated alternating smectic C phase . J Mater Chem , 14 : 2486 – 2488 .
   Web of Science ®Google Scholar
• Henderson , PA and Imrie , CT. 2009 . Non-symmetric liquid crystal trimers . Liq Cryst , 36 : 673 – 682 .
   Google Scholar