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Phase Transition Investigations of a Series of Aromatic Naphthalene-2-yl-4-(Alkoxy) Benzoate and Naphthalene-1-yl-4-(Alkoxy) Benzoate Materials

DOI: 10.4236/wjcmp.2022.121001, PP. 1-7

Keywords: Liquid Crystals, Mesomorphism, Calamitic, Nematic, Smectic A, Polarized Optical Microscopy, Differential Scanning Calorimetry

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The mesogenic properties of a homologous series of aromatic ester materials are investigated. Single tail and double tail materials were synthesized to compare with other series we prepared and published earlier. The phase sequences and transition temperatures were obtained by polarized light microscopy and differential scanning calorimetry. Only the single tail materials with the ester attached to naphthalene at position 2 display mesogenicbehavior. Two materials (ZH 29 & ZH 32) possess a monophasic nematic phase and another two materials (ZH 14 & ZH 35) display biphasic nematic and smectic (A) phases.


[1]  Collings, P.J. and Hird, M. (1998) Introduction to Liquid Crystals: Chemistry and Physics. CRC Press, London.
[2]  Bahadur, B. (1992) Liquid Crystals: Applications and Uses. Vol. 3, World Scientific, Singapore, 68-211.
[3]  Kaafarani, B.R. (2011) Discotic Liquid Crystals for Opto-Electronic Applications. Chemistry of Materials, 23, 378-396.
[4]  Sluckin, T.J., Dunmur, D.A. and Stegemeyer, H. (2004) Crystals That Flow. 1st Edition, CRC Press, Boca Raton.
[5]  Lin, Y.H., Wang, Y.J. and Reshetnyak, V. (2017) Liquid Crystal Lenses with Tunable Focal Length. Liquid Crystals Reviews, 5, 111-143.
[6]  Gray, G.W. (1962) Molecular Structure and the Properties of Liquid Crystals. Academic Press, London and New York.
[7]  Demus, D., Goodby, J., Gray, G.W., Spiess, H.W. and Vill, V. (2011) Handbook of Liquid Crystals: Low Molecular Weight Liquid Crystals I: Calamitic Liquid Crystals. Wiley, London.
[8]  Zoghaib, W.M., Carboni, C., George, A.K., AL-Manthari, S., Al-Hussaini, A. and Al-Futaisi, F. (2011) Novel Fluorinated Ferroelectric Organosiloxane Liquid Crystals. Molecular Crystals and Liquid Crystals, 542, 123-131.
[9]  Zoghaib, W.M., Carboni, C., Al-Hinai, H., Al-Abri, S., Al-Kasbi, S., Al-Nasseri, E., Al-Masroori, M., Al-Yahyaee, M. and Al-Busaidi, S. (2015) A Novel Series of Chiral Fluorinated Organosiloxane Liquid Crystals. Molecular Crystals and Liquid Crystals, 612, 183-190.
[10]  Zoghaib, W.M., Carboni, C., Al-Rawahi, J., Al-Rubaiei, F., Al-Bulushi, H., Al-Aufi, M., Al-Harrasi, M., Al-Kalbani, S. and Al-Kiyumi, A. (2016) Bifurcated-Tail Chiral Fluorinated Organosiloxane Liquid Crystalline Materials. Molecular Crystals and Liquid Crystals, 632, 114-123.
[11]  Zoghaib, W.M., Carboni, C., Kashoub, F.A., Al-Rushidi, J.S., Al-Jabri, B.Y., Al-Alawi, A.S. and Al-Mendhry, H.F. (2018) A de Vries (SmC*) Phase in a Novel Series of Chiral Fluorinated Organosiloxane Liquid Crystals. Molecular Crystals and Liquid Crystals, 666, 54-64.
[12]  Wang, L., Huang, D., Lam, L. and Cheng, Z. (2017) Bowlics: History, Advances and Applications. Liquid Crystals Today, 26, 85-111.
[13]  Lagerwall, J.P.F. and Giesselmann, F. (2006) Current Topics in Smectic Liquid Crystal Research. ChemPhysChem, 7, 20-45.
[14]  Zoghaib, W.M., George, A.K., Carboni, C., Molla, M.E., Al-Mahrezi, S., Al-Khan, H. and Al-Kamshaki, D. (2020) Mesomorphism of a Series of Aromatic Single Tail Biphenyl-yl-4-(alkoxy) Benzoate and 4-(Benzyloxy)phenyl-4-(alkoxy)benzoate Liquid Crystalline Materials. Molecular Crystals and Liquid Crystals, 710, 13-18.
[15]  Al-Yazeedi, R. (2015) A Phase Transition Study on Liquid Crystalline Materials Using Polarized Optical Microscopy and Differential Scanning Calorimetry. Final Year Project Thesis Submitted to the Chemistry Department, Sultan Qaboos University, Oman (Unpublished Results).


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