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Synthesis and Liquid Crystalline Behavior of Photoreactive Side Chain Liquid Crystalline Polyoxetanes Containing Cinnamoyl Biphenyl Mesogen
Corresponding Author(s) : Chih-Hung Lin
Asian Journal of Chemistry,
Vol. 27 No. 4 (2015): Vol 27 Issue 4
Abstract
A new series of photo-cross-linkable side chain liquid crystalline polymers based on the oxetane backbone containing 4-cinnamoyl biphenyl groups as the mesogenic and photo reactive group in side chain were prepared by ring-opening polymerization and characterized. The thermal transition and mesomorphic nature of the resulting polymers and monomers were determined by differential scanning caloriametry, polarized optical microscope and X-ray technique. All the synthesized polymers showed enantiotropic liquid crystal behaviour. It was found that the length of the flexible spacer had a great influence on both the thermal transitions and mesomorphic nature for the resulting polymers and monomers.
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- C.H. Legge, M.J. Whitcombe, A. Gilbert and G.R. Mitchell, J. Mater. Chem., l, 303 (1991); doi:10.1039/jm9910100303.
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- L.C. Chien and L.G. Cada, Macromolecules, 27, 3721 (1994); doi:10.1021/ma00092a007.
- Gangadhara and K. Kishore, Macromolecules, 28, 806 (1995); doi:10.1021/ma00108a002.
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- N. Kawatsuki, K. Goto, T. Kawakami and T. Yamamoto, Macromolecules, 35, 706 (2002); doi:10.1021/ma011439u.
- N. Kawatsuki, K. Kato, T. Shiraku, T. Tachibana and H. Ono, Macromolecules, 39, 3245 (2006); doi:10.1021/ma060117t.
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- Y.H. Lu and C.S. Hsu, Macromolecules, 28, 1673 (1995); doi:10.1021/ma00109a046.
- H. Bouchekif, M. Philbin, E. Colclough and A.J. Amass, Macromolecules, 43, 845 (2010); doi:10.1021/ma902119p.
- J.-W. Lee, D. Keun Oh, C.V. Yelamaggad, S. Anitha Nagamani and J.-I. Jin, J. Mater. Chem., 12, 2225 (2002); doi:10.1039/b202594a.
- C. Noel, in ed.: C. B. McArdle, Macroscopic Structural Characterization of Side Chain Liquid Crystal Polymers, In: Side Chain Liquid Crystal Polymers, Blackie, p. 159 (1989).
References
C.H. Legge, M.J. Whitcombe, A. Gilbert and G.R. Mitchell, J. Mater. Chem., l, 303 (1991); doi:10.1039/jm9910100303.
M.J. Whitcombe, A. Gilbert and G.R. Mitchell, J. Polym. Sci. A Polym. Chem., 30, 1681 (1992); doi:10.1002/pola.1992.080300821.
M.J. Whitcombe, A. Gilbert, A. Hirai and G.R. Mitchell, J. Polym. Sci. A Polym. Chem., 29, 251 (1991); doi:10.1002/pola.1991.080290213.
B. Messner and H. Finkelmann, Makromol. Chem., 192, 2383 (1991); doi:10.1002/macp.1991.021921016.
L.C. Chien and L.G. Cada, Macromolecules, 27, 3721 (1994); doi:10.1021/ma00092a007.
Gangadhara and K. Kishore, Macromolecules, 28, 806 (1995); doi:10.1021/ma00108a002.
E. Chiellini, E. Dossi, G. Galli, R. Solaro and B. Gallot, Macromol. Chem. Phys., 196, 3859 (1995); doi:10.1002/macp.1995.021961201.
N. Kawatsuki, H. Takatsuka, T. Yamamoto and O. Sangen, Macromol. Rapid Commun., 17, 703 (1996); doi:10.1002/marc.1996.030171005.
N. Kawatsuki, S. Sakashita, K. Takatani, T. Yamamoto and O. Sangen, Macromol. Chem. Phys., 197, 1919 (1996); doi:10.1002/macp.1996.021970612.
N. Kawatsuki, H. Takatsuka, T. Yamamoto and O. Sangen, J. Polym. Sci. A Polym. Chem., 36, 1521 (1998); doi:10.1002/(SICI)1099-0518(19980730)36:10<1521::AID-POLA5>3.0.CO;2-T.
N. Kawatsuki, K. Goto, T. Kawakami and T. Yamamoto, Macromolecules, 35, 706 (2002); doi:10.1021/ma011439u.
N. Kawatsuki, K. Kato, T. Shiraku, T. Tachibana and H. Ono, Macromolecules, 39, 3245 (2006); doi:10.1021/ma060117t.
N. Kawatsuki, A. Yamashita, Y. Fujii, C. Kitamura and A. Yoneda, Macromolecules, 41, 9715 (2008); doi:10.1021/ma802026b.
N. Kawatsuki, H. Ono, H. Takatsuka, T. Yamamoto and O. Sangen, Macromolecules, 30, 6680 (1997); doi:10.1021/ma9703315.
Y.H. Lu and C.S. Hsu, Macromolecules, 28, 1673 (1995); doi:10.1021/ma00109a046.
H. Bouchekif, M. Philbin, E. Colclough and A.J. Amass, Macromolecules, 43, 845 (2010); doi:10.1021/ma902119p.
J.-W. Lee, D. Keun Oh, C.V. Yelamaggad, S. Anitha Nagamani and J.-I. Jin, J. Mater. Chem., 12, 2225 (2002); doi:10.1039/b202594a.
C. Noel, in ed.: C. B. McArdle, Macroscopic Structural Characterization of Side Chain Liquid Crystal Polymers, In: Side Chain Liquid Crystal Polymers, Blackie, p. 159 (1989).