Synthesis of a series of triple-bridged cyclotriphosphazene hexa-alkoxy derivatives and investigation of their structural and mesomorphic properties

References

• Li , XG , Huang , MR , Hu , L , Lin , G and Yang , PC. 1999 . Cellulose derivative and liquid crystal blend membranes for oxygen enrichment . Eur Polym J , 35 : 157 – 166 .
   Web of Science ®Google Scholar
• Chen , HP , Katsis , D , Mastrangelo , JC , Chen , SH , Jacobs , SD and Hood , PJ. 2000 . Glassy liquid-crystal films with opposite chirality as high-performance optical notch filters and reflector . Adv Mater , 12 : 1283 – 1286 .
   Web of Science ®Google Scholar
• Van Delden , RA and Feringa , BL. 2001 . Color indicators of molecular chirality based on doped liquid crystal . Angew Chem Int Ed , 40 : 3198 – 2001 .
   PubMed Web of Science ®Google Scholar
• Shibaev , V , Bobrovsky , A and Boiko , N. 2003 . Photoactive liquid crystalline polymer systems with light-controllable structure and optical properties . Prog Polym Sci , 28 : 729 – 836 .
   Web of Science ®Google Scholar
• Stutzmann , N , Bunk , O , Nielsen , MM , Watson , MD , Chanzy , HD and Friend , RH. 2003 . Meso-epitaxial solution-growth of self-organizing discotic liquid-crystalline semiconductors . Adv Mater , 15 : 495 – 499 .
   Web of Science ®Google Scholar
• Goto , H , Xi , D , Narihiro , H and Akagi , K. 2004 . Synthesis of polythiophene derivatives bearing ferroelectric liquid crystalline substituents . Macromolecules , 37 : 2353 – 2362 .
   Web of Science ®Google Scholar
• Choi , SS , Morris , SM , Huck , WTS and Coles , HJ. 2009 . The switching properties of chiral nematic liquid crystals using electrically commanded surfaces . Soft Matter , 5 : 354 – 362 .
   Web of Science ®Google Scholar
• Choi , SS , Morris , SM , Huck , WTS and Coles , HJ. 2009 . Electrically tuneable liquid crystal photonic bandgaps . Adv Mater , 21 : 3915 – 3918 .
   Web of Science ®Google Scholar
• Barbera , J , Jimenez , J , Laguna , A , Oriol , L , Perez , S and Serrano , JL. 2006 . Cyclotriphosphazene as a dendritic core for the preparation of columnar supermolecular liquid crystals . Chem. Mater , 18 : 5437 – 5445 .
   Web of Science ®Google Scholar
• Saez , MI and Goodby , WJ. 2005 . Supermolecular liquid crystals . J Mater Chem , 15 : 26 – 40 .
   Web of Science ®Google Scholar
• Barbera , J , Bardajı , M , Jimenez , J , Laguna , A , Martinez , MP , Oriol , L , Serrano , JL and Zaragozano , I. 2005 . Columnar mesomorphic organizations in cyclotriphosphazenes . Am Chem Soc , 127 : 8994 – 9002 .
   PubMed Web of Science ®Google Scholar
• Jimenez , J , Laguna , A , Molter , AM , Serrano , JL , Barbera , J and Oriol , L. 2011 . Supermolecular liquid crystals with a six-armed cyclotriphosphazene core: from columnar to cubic phases . Chem Eur J , 17 : 1029 – 1039 .
   PubMed Web of Science ®Google Scholar
• Bushby , RJ and Kawata , K. 2011 . Liquid crystals that affected the world: discotic liquid crystals . Liq Cryst , 38 ( 11–12 ) : 1415 – 1426 .
   Web of Science ®Google Scholar
• Singler , RE , Willingham , RA , Lenz , RW , Furukawa , A and Finkelmann , H. 1987 . Liquid crystalline side-chain phosphazenes . Macromolecules , 20 : 1727 – 1728 .
   Web of Science ®Google Scholar
• Goodby , JW. 2011 . The nanoscale engineering of nematic liquid crystals for displays . Liq Cryst , 38 ( 11–12 ) : 1363 – 1387 .
   Web of Science ®Google Scholar
• Goodby , JW , Stephen , J and Buchkremer , A. 2011 . From rods to knots using cyclohexane in smectic liquid crystals cowling . Liq Cryst , 38 ( 8 ) : 1057 – 1067 .
   Web of Science ®Google Scholar
• Allcock , HR and Kim , C. 1989 . Liquid crystalline phosphazenes, high polymeric and cyclic trimeric systems with aromatic azo side groups . Macromolecules , 22 : 2596 – 2602 .
   Web of Science ®Google Scholar
• Allcock , HR and Kim , C. 1990 . Liquid crystalline phosphazenes bearing biphenyl mesogenic groups . Macromolecules , 23 : 3881 – 3887 .
   Web of Science ®Google Scholar
• Allcock , HR and Klingenberg , EH. 1995 . Synthesis of liquid crystalline phosphazenes containing chiral mesogens . Macromolecules , 28 : 4351 – 4360 .
   Web of Science ®Google Scholar
• Moriya , K , Yano , S and Kajiwara , M. 1990 . Liquid crystalline state in hexakis[4-(4-cyano)biphenoxy]- and hexakis[4-(phenylazo)phenoxy]cyclotriphosphazenes . Chem Lett , : 1039 – 1042 .
   Web of Science ®Google Scholar
• Moriya , K , Mizusaki , H , Kato , M , Yano , S and Kajiwara , M . 1995 . Liquid crystalline phase transitions in hexakis(4-(4′-heptyloxy)biphenoxy)cyclotriphosphazene . Liq Cryst , 18 : 795 – 800 .
   Web of Science ®Google Scholar
• Levelut , AM and Moriya , K . 1996 . Structure of the liquid crystalline state in hexakis (4-(4′-alkyloxy)biphenoxy)cyclotriphosphazenes . Liq Cryst , 20 : 119 – 124 .
   Web of Science ®Google Scholar
• Moriya , K , Suzuki , T , Mizusaki , H , Yano , S and Kajiwara , M. 1997 . Liquid crystalline phase transition in organophosphazenes with 4-octyloxybiphenyl mesogenic groups . Chem Lett , : 1001 – 1002 .
   Web of Science ®Google Scholar
• Moriya , K , Mizusaki , H , Kato , M , Suzuki , T , Yano , S , Kajiwara , M and Tashiro , K . 1997 . Thermal and structural study on liquid-crystalline phase transition in hexakis(4-(4′-alkyloxy)biphenoxy)cyclotriphosphazene . Chem Mater , 9 : 255 – 263 .
   Web of Science ®Google Scholar
• Moriya , K , Masuda , T , Suzuki , T , Yano , S and Kajiwara , M . 1998 . Liquid crystalline phase transition in hexakis (4-(n-(41-alkoxyphenyl) iminomethyl) phenoxy) cyclotriphosphazene . Mol Cryst Liq Cryst , 318 ( 1 ) : 267 – 278 .
   Web of Science ®Google Scholar
• Moriya , K , Suzuki , T , Kawanishi , Y , Masuda , T , Mizusaki , H , Nakagawa , S , Ikematsu , H , Mizuno , K , Yano , S and Kajiwara , M. 1998 . Liquid-crystalline phase transition in organophosphazenes . Appl Organomet Chem , 12 : 771 – 779 .
   Web of Science ®Google Scholar
• Moriya , K , Suzuki , T , Yano , S and Kajiwara , M. 1995 . Liquid crystalline phase transitions in cyclotriphosphazenes with different mesogenic moieties in the side chains . Liq Cryst , 19 : 711 – 713 .
   Web of Science ®Google Scholar
• Serrano , JL. 1996 . Metallomesogens: synthesis, properties and applications , New York , NY : Wiley-VCH .
   Google Scholar
• Goodby , JW , Demus , D , Gray , GW , Spiess , HW and Vill , V. 1998 . Handbook of liquid crystals , Vol. 1 , Weinheim : Wiley-VCH . Fundamentals
   Google Scholar
• Yao , DS , Zhang , BY , Zhang , WW and Tian , M. 2008 . A new class of star-shaped cholesteric liquid crystal containing a 1,3,5-trihydroxybenzene unit as a core . J Mol Struct. (Theochem) , 881 : 83 – 89 .
   Web of Science ®Google Scholar
• Xu , J , Ling , TC and He , C. 2008 . Hydrogen bond-directed self-assembly of peripherally modified cyclotriphosphazenes with a homeotropic liquid crystalline phase . J Polym Sci Part A Polym Chem , 46 : 4691 – 4703 .
   Web of Science ®Google Scholar
• Tian , M , Zhang , BY , Cong , YH , He , XZ and Zhang , B. 2009 . Mesomorphic properties of chiral nematic star-shaped liquid crystals containing melitose as cores . Mol Struct (Theochem) , 937 : 131 – 135 .
   Web of Science ®Google Scholar
• Li , Chang-Zhi , Matsuo , Y and Nakamura , E. 2009 . Luminescent bow-tie-shaped decaaryl[60]fullerene mesogens . J Am Chem Soc Com , 131 : 17058 – 17059 .
   PubMed Web of Science ®Google Scholar
• Castera , P , Faucher , JF , Granier , M and Labarre , JF. 1987 . Singly, doubly and triply bridged polyazaheterophanes derived from hexachlorocyclotrıphosphazene, N3P3Cl6 . Phosphorus Sulfur Silicon Relat Elem , 32 : 37 – 50 .
   Web of Science ®Google Scholar
• Besli , S , Coles , SJ , Davies , DB , Erkovan , AO , Hursthouse , MB and Kılıc , A. 2009 . Single-, double- and triple-bridged derivatives of cyclotriphosphazenes with an octafluorohexane-1,6-diol . Polyhedron , 28 : 3593 – 3599 .
   Web of Science ®Google Scholar
• Guerch , G , Labarre , JF , Oiry , J and Imbach , JL. 1982 . A through route for the synthesis of pure 2,2,4,4-tetrakis(aziridinyl)-6,-amino-6,-methoxycyclotriphosphaza-1,3,5-triene, gem N3P3AZ4(NH2)(OCH3) . Inorg Chim Acta Bioinorg Sect , 67 : L5
   Google Scholar
• Fincham , JK , Hursthouse , MB , Parkers , HG , Shaw , LS and Shaw , RA. 1985 . Synthesis, N.M.R. spectra, and X-ray crystal structure of 2-trans-4-diamino-2,4,6,6-tetra-n-propoxycyclotriphosphazatriene. The first example of a geminal to trans-nongeminal amino-group migration in phosphazene chemistry . Chem Commun , : 252 – 254 . doi: 10.1039/C39850000252
   Web of Science ®Google Scholar
• Allcock , HR , Fuller , TJ and Matsumura , K. 1981 . Reactions of steroid salts with hexachlorocyclotriphosphazene . J Org Chem , 46 : 13 – 22 .
   Web of Science ®Google Scholar
• Collings , PJ and Hird , M. 1997 . Introduction of liquid crystals chemistry and physics , New York , NY : Taylor and Francis .
   Google Scholar
• Nishizawa , K , Nagano , S and Seki , T. 2009 . Novel liquid crystalline organic − inorganic hybrid for highly sensitive photoinscriptions . Chem Matter , 21 : 2624 – 2631 .
   Web of Science ®Google Scholar