Preferences help
enabled [disable] Abstract
Number of results
2016 | 129 | 3 | 284-288
Article title

An Optical Study to Estimate Orientational Order Parameter on Some Benzylideneaminophenylbenzoate Liquid Crystals

Title variants
Languages of publication
The birefringence technique has been used for the evaluation of order parameter in the nematic phase along with the density measurements, which are needed for the calculation of molecular polarizabilities of the compounds. Birefringence and density studies have been carried out on the three liquid crystalline compounds viz.(1) (E)-4-((4-hexyloxy)benzylidene)amino)phenyl 4-butoxybenzoate(2) (E)-4-((4-hexyloxy)benzylidene)amino)phenyl 4-(decycloxy)benzoate and(3) (E)-4-((4-hexyloxy)benzylidene)amino)phenyl 4-(tridecycloxy)benzoate.Using birefringence and density data the molecular polarizabilities are evaluated by two different internal field models due to Vuks and Neugebauer. The mean molecular polarizability of the compounds is also evaluated by employing modified Lippincott δ-function model. The results reveal that both the theoretical and experimental values obtained are very near to each other.
  • Department of Physics, Sri Krishnadevaraya University, Anantapur, India
  • Department of Physics, Sri Krishnadevaraya University, Anantapur, India
  • Department of Physics, Sri Krishnadevaraya University, Anantapur, India
  • Department of Physics, Maharani's Science College, Bangalore, India
  • Department of Physics, Ghousia College of Engineering, Ramanagaram, India
  • [1] W.H. De Jeu, Physical Properties of Liquid Crystalline Materials, Gordon and Breach, New York 1980
  • [2] W. Kuczynski, B. Zywuchki, J. Matecki, Mol. Cryst. Liq. Cryst. 381, 1 (2002), doi: 10.1080/713738745
  • [3] S.K. Pal, V.A. Raghunathan, S. Kumar, Liq. Cryst. 34, 135 (2007), doi: 10.1080/02678290601061280
  • [4] C.L. Toh, J. Xu, C. He, Liq. Cryst. 35, 241 (2008), doi: 10.1080/02678290701862355
  • [5] I. Haller, H.A. Huggins, H.R. Lilienthal, T.R. McGuire, J. Phys. Chem. 77, 950 (1973), doi: 10.1021/j100626a020
  • [6] D. Venkata Rao, P. Pardhasaradhi, V.G.K.M. Pisipati, P.V. Datta Prasad, Phase Transit. 88, 137 (2015), doi: 10.1080/01411594.2014.961154
  • [7] P. Pardhasaradhi, P.V. Datta Prasad, D. Madhavi Latha, V.G.K.M. Pisipati, G. Padmaja Rani, Phase Transit. 85, 1031 (2012), doi: 10.1080/01411594.2012.671323
  • [8] H.S. Subramhanyam, D. Krishnamurti, Mol. Cryst. Liq. Cryst. 22, 239 (1973), doi: 10.1080/15421407308083347
  • [9] J. Lalitha Kumari, P.V. Datta Prasad, D. Madhavi Latha, V.G.K.M. Pisipati, Phase Transit. 85, 52 (2012), doi: 10.1080/01411594.2011.578826
  • [10] K. Fakruddin, R. Jeevan Kumar, P.V. Datta Prasad, V.G.K.M. Pisipati, Mol. Cryst. Liq. Cryst. 511, 146 (2009), doi: 10.1080/15421400903053693
  • [11] V.R. Murthy, S.V. Naidu, R.N.V. Ranga Reddy, Mol. Cryst. Liq. Cryst. 59, 27 (1980), doi: 10.1080/00268948008073496
  • [12] P. Adamski, A. Dylik-Gromisc, Mol. Cryst. Liq. Cryst. 35, 171 (1976), doi: 10.1080/15421407608084319
  • [13] I. Haller, H.A. Huggins, M.J. Freisner, Mol. Cryst. Liq. Cryst. 16, 53 (1972), doi: 10.1080/15421407208083579
Document Type
Publication order reference
YADDA identifier
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.