Copyright (c) 2015 Yong-Sheng Wei, Min-Yan Zheng, Wei Geng, Shan Wang, Yong-Hui Shang
This work is licensed under a Creative Commons Attribution 4.0 International License.
Liquid Crystal of Ethyl and Propyl Aromatic Aldehyde with Azo Core and Photosensitivity in Mesophase
Corresponding Author(s) : Yong-Sheng Wei
Asian Journal of Chemistry,
Vol. 27 No. 5 (2015): Vol 27 Issue 5
Abstract
Eight new stable rod-like aromatic aldehyde liquid crystalline molecules with azo bridge have been prepared, in which single or double six-membered carbon ring carboxylic acid mesogenic cores with shorter alkyl chain of ethyl, n-propyl were condensed with hydroxyl azo benzaldehyde. These compounds have been characterized by their spectral data, DSC and HS-POM. These molecules were expected to exhibit liquid crystal phase so that the influence of UV-light on their textures of mesophase could be detected. The results showed that all these target compounds have the temperature range of mesophase between 101 and 145 °C. After irradiating under UV-light, they exihibited photo-sensitivity not only in methanol but also in mesophase.
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References
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3. E.R. Kay, D.A. Leigh and F. Zerbetto, Angew. Chem., 119, 72 (2007); doi:10.1002/ange.200504313.
4. V. Balzani, A. Credi and M. Venturi, Chem. Soc. Rev., 38, 1542 (2009); doi:10.1039/b806328c.
5. J.H. Wang, L. Liu, G.F. Liu, J.X. Guo and D.Z. Jia, Sci. Chin. Ser. B: Chem., 51, 661 (2008); doi:10.1007/s11426-008-0025-4.
6. J.L. Yao, Y.J. You, H. Liu, L.J. Dong and C.X. Xiong, J. Mater. Sci., 46, 3343 (2011); doi:10.1007/s10853-010-5222-9.
7. V. Circu, A.S. Mocanu, C. Roşu, D. Manaila-Maximean and F. Dumitraşcu, J. Therm. Anal. Calorim., 107, 877 (2012); doi:10.1007/s10973-011-1609-3.
8. M. Kaspar, V. Novotná, V. Hamplová, N. Podoliak, D. Nonnenmacher, F. Giesselmann and M. Glogarová, Liq. Cryst., 38, 309 (2011); doi:10.1080/02678292.2010.546532.
9. M.Y. Zheng and Z.W. An, Chin. J. Appl. Chem., 24, 396 (2007).
10. V.R. Choudhary, D.K. Dumbre and V.S. Narkhede, J. Chem. Sci., 124, 835 (2012); doi:10.1007/s12039-012-0268-7.
11. M.Y. Zheng and Z.W. An, Chin. J. Chem., 24, 1754 (2006); doi:10.1002/cjoc.200690328.
12. Z.Q. Zou, Z.J. Deng, X.H. Yu, M.M. Zhang, S.H. Zhao, T. Luo, X. Yin, H. Xu and W. Wang, Sci. Chin. Ser. B: Chem., 55, 43 (2012); doi:10.1007/s11426-011-4445-1.
13. S. Leclair, L. Mathew, M. Giguere, S. Motallebi and Y. Zhao, Macromolecules, 36, 9024 (2003); doi:10.1021/ma034886d.
14. J. Arias, M. Bardají, P. Espinet, C.L. Folcia, J. Ortega and J. Etxebarría, Inorg. Chem., 48, 6205 (2009); doi:10.1021/ic9005295.
15. S. Pandey, B. Kolli, S.P. Mishra and A.B. Samui, J. Polym. Sci. A Polym. Chem., 50, 1205 (2012); doi:10.1002/pola.25885.
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