Paper Titles in Periodical
International Letters of Chemistry, Physics and Astronomy
ILCPA Volume 60

Subscribe to our Newsletter and get informed about new publication regulary and special discounts for subscribers!

ILCPA > ILCPA Volume 60 > Study of Thermotropic Mesomorphismin Nonlinear and...
< Back to Volume

Study of Thermotropic Mesomorphismin Nonlinear and Linear Isomeric and Nonisomeric Series

Full Text PDF


Chalconyl homologous series: RO-C6H4-COO-C6H4(m)-CO-CH=CH-OC14H29(n) para has been synthesized and studied with a view to establish the relation between the molecular structure and thermotropic Liquid crystalline (LC) properties. Novel nonlinear series consists of thirteen members (C1 to C18) of a series. C6 to C18 members are enantiotropically nematogenic and the rest of the homologues ( C1 to C5 ) are nonliquid crystals (NLC). Smectogenic character is totally absent. Transition temperatures and the textures of the novel homologues were determined by an optical polarizing microscopy (POM) equipped with a heating stage. Textures of a nematic phase are threaded or schlieren. Transition curves Cr-N/I and N-I behaved in normal manner. N-I transition curve exhibited odd-even effect. Analytical and spectral data confirmed the molecular structures of homologues. Thermal stability is 107.0 and mesomorphic nematogenic degree of mesomorphism vary minimum to maximum are 17.0°C to 35.0°C at the C14 and C8 homologues respectively. Some mesogenic properties of presently investigated homologous series are compared with structurally similar isomeric and nonisomeric homologous series, and their group efficiency order derived. Thus, present novel series is nematogenic with absence of smectogenic character whose nematogenic transition temperatures vary from 74.0°C to 117.0°C.


International Letters of Chemistry, Physics and Astronomy (Volume 60)
B.B. Jain and R.B. Patel, "Study of Thermotropic Mesomorphismin Nonlinear and Linear Isomeric and Nonisomeric Series", International Letters of Chemistry, Physics and Astronomy, Vol. 60, pp. 1-10, 2015
Online since:
September 2015

Reinitzer, Monatsh 9, 421, (1888).

E. Hertz, B. Lavorel and O. Faucher, Optical imagine by molecular gas, Nature photon; 5(2011) p.783.

W.S. Kim, S.J. Elston , and F.P. Raynes , Display29 (2008) PP. 458-463.

S. Narmura, Advance LCD technologies, Displays 22 (1) (2001) p.1.

Imran Tadwee, Dr. Sahanashahi, vivekRamteke, Iftequarsyed, Liquid crystal pharmaceutical Application: A review, IJPRAS. ISSN2277-2236 vol. 1, Issue2(2012), 06-11.

C.A. Calliste, J.C. Le Bail, P. Trouilas, C. Poug, A.J. Chulia, L.J. Duroux, Anticancer, Res. 2001, 21, 3949-3956.

G.W. Gray and P.A. Winster (Eds) Liquid Crystal and plastic crystals, chapter-6. 2 , The role of liquid crystal in life processes by G.T. Stewart, Vol-1, PP. 308-326.

Y. Jahng, L. Zhao, Y. Moon, A. Basnet, E. Kim, H.W. Chang, H.K. Ju, T.C. Jeong, E.S. Lee, Bioorg. Med. Chem. Lett. 2004, 14, 2559-2562.

Upendra K Jain , Rich K Bhatia, Akkinepally R. Rao, Ranjitsingh , SaxsenaAjit K and Sehalrun Design and Development of Halogenated Chalcone derivatives as potential anticancer Agents, Tropical Journal of pharmaceutical Research, January 2014: 13(1), 73-80.

Prajkata P. Gaikwad , Desai Maya T. Liquid crystalline phase and its Pharma application, International journal of Pharma Research and Review , Dec. 2013; 2 (12) ; 40-52.

Gray G.W. (1974) ln; Gray G.W. and P.A. Winsor P.A. (eds) liquid crystal and plastic crystals, Chapter-4 , Volume-1, PP-103-153.

Gray G.W., Molecular Structure and properties of liquid crystals, Academic press, Landon, (1962).

C.T. lmrie, Liq. Crystal dimers. struct. Bond 95 (1999) PP. 149-192.

P.A. Henderson, O. Niemeyer, and C.T. Imrie, Methylene-linked liquid crystal dimers, Liq. Cryst. 28 (2001), pp.463-472.

lmrie C. T and Luckhrust G. R, " Liquid Dimers and Oligomers in handbook of Liquid Crystal, law molecular liquid crystals; Vol. 2B, Demus D. , Goodby J.W., Graw G.W. , Spiess H. and Vill V. eds, Willey-VCH weinhe 1998, PP-801-833.

Dermus D., 100 years of liquid crystals chemistry, mol. Cryst. 165 (1998) PP. 45-84.

Dermus D., Plenary lectures 100 years of liquid crystals chemistry, Thermotropic liquid crystals with conventional and unconventional molecular structures, Liq. Cryst, 5 (1998). PP. 75-100.

Doshi et al (i) Suthar D.M. and Doshi A.V., Mol. Cryst. Liq. Cryst. Vol. 575, PP. 76-83. (ii) Chauhan H.N. and Doshi A.V., Mol. Cryst. Liq. Cryst. Vol. 570, PP. 92-100 (2013).

Suthar D.M., Doshi A.A. and Doshi A.V., Synthesis of liquid crystalline state and evaluation of its properties through a novel Homologous series, Mole. Cryst. Liq. Cryst. Vol-582, PP. 7987, (2013).

Rajesh B. Marathe, N.N. Vyas and Doshi A.V. Molecular Flexibility Operated Mesomorphism, ILCPA, Scipress Ltd., Vol-52, pp-163-171 (2015).

Patel B.H. and Doshi A.V. Effect of a Central Group on Mesomorphism, Mol. Cryst. Liq. Cryst., vol-607, pp.114-122 (2015).

Patel B.H. and Doshi A.V. Synthesis and liquid Crystal Properties of a Nvel Homologous Series 4-(4'-n-Alkoxy benzoyloxy) Benzyl Benzoate, Mol. Cryst. Liq. Cryst., Vol-605, PP. 6169 (2015).

Doshi A.V. and Makwana N.G. Homologous series of Azomesogens 4 (4/-nalkoxybenzoyloxy)-3-chloro phenyl azo-2"-chlorobenzenes, Mol. Cryst. Liq. Cryst. (2011) Vol. 548(1) pp.220-227.

Hird. M, Toyne. K. J, and Gray G.W., Day S. E and Mc. Donell D. G (1993) , Liq. Cryst. 15, PP. 123.

P.J. Collings and M. Hird (1997), Introduction of Liquid crystals chemistry and Physics, Taylor and Francis Ltd. U.K. (1998).

Macros . M, Omenat. A, , Serrano. J. L andEzcurra. A(1992), Adv. Matter, 4, 285.

Hird. M, Toyne. K. J, Gray G.W. , Day S.E. (1993) Liq. Cryst. 14, PP. 741.

Dave J. S and Vora R. A (1970). In: J. F . Johnson and R.S. Porter, (eds), ( Liquid Crystals and ordered fluids, Plenum Press: New York, P. 447.

Vogel A.I. Textbook of practical organic chemistry, 5the. d. ELBS and Longmann, London (1989) 946.

Uhood J.A., international Journal of Molecular Science., vol. 12; PP. 3182-3190 (2011).

Pandya S.H. and V.R. Patel Manuscript of a research paper entitled Study of Deviation from Normal LC Behaviour of Mesomorphic-Isotropic Transition Curve in a Chalconyl-Ester Series with Equipolar Terminal End Group, Submitted for publication dated 12th Sept. 2015 to Mol. Cryst. Liq. Cryst. Journal.

B.B. Jain and R.B. Patel , Manuscript of the research paper entitled, Mesomorphism Dependence on Tail Group, submitted for publication in Mol. Cryst. Liq. Cryst. Journal with its reference no. LCMH No. 332 dated 9th June (2015).

Vinay S. Sharma and R.B. Patel Manuscript of the research paper entitled, Study of Mesomorphism in Isomeric and Nonisomeric Linear and Nonlinear Chalconyl series, Submitted for publication in International Letters of Chemistry, Physics and Astronomy, Scipress dated 17th September (2015).

Show More Hide
Cited By:
This article has no citations.