A Comparative Investigation into the Mesomorphism of Series of Aromatic Naphthalen-2-yl 4-(Alkoxy) Benzoate and Naphthalen-1-yl 4-(Alkoxy) Benzoate Materials

Authors

  • Wajdi Michael Zoghaib Department of Chemistry, SQU, P.O. Box-36, Al-Khod, P.C.-123, Sultanate of Oman.
  • Carlo Carboni Department of Physics, SQU, P.O. Box-36, Al-Khod, , P.C.-123, Sultanate of Oman.
  • M. Elias Molla Department of Chemistry, Jahangirnagar University, Savar, Dhaka, Bangladesh.
  • Samiya Al-Mahrezi Department of Physics, SQU, P.O. Box-36, Al-Khod, , P.C.-123, Sultanate of Oman.
  • Turkiya Al-Shahumi Department of Physics, SQU, P.O. Box-36, Al-Khod, , P.C.-123, Sultanate of Oman.
  • Sanaa Al-Badi Department of Chemistry, SQU, P.O. Box-36, Al-Khod, P.C.-123, Sultanate of Oman.
  • Muna Al-Farsi Department of Chemistry, SQU, P.O. Box-36, Al-Khod, P.C.-123, Sultanate of Oman.

DOI:

https://doi.org/10.9734/bpi/nfpsr/v9/4581B

Keywords:

Liquid crystals, mesomorphism, calamitic, nematic, smectic A, polarized optical microscopy, differential scanning calorimetry

Abstract

A homologous sequence of aromatic ester materials' mesogenic characteristics are investigated. This study is aimed at comparing the mesomorphic behavior of the series described herein with mesogenic materials we prepared and studied earlier. Single tail and double tail materials were synthesized for this comparative study. By using differential scanning calorimetry and polarized light microscopy, the phase sequences and transition temperatures were determined. Only compounds with a single tail and an ester connected at position 2 of the naphthalene exhibit mesogenic behaviour. 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. The materials with the ester attached to naphthalene at position 1 do not display any mesogenic behavior. The materials with two alkoxy chains bonded to the benzoate ester do not display any mesogenic behavior as well.

Published

2023-03-06

How to Cite

Wajdi Michael Zoghaib, Carlo Carboni, M. Elias Molla, Samiya Al-Mahrezi, Turkiya Al-Shahumi, Sanaa Al-Badi, & Muna Al-Farsi. (2023). A Comparative Investigation into the Mesomorphism of Series of Aromatic Naphthalen-2-yl 4-(Alkoxy) Benzoate and Naphthalen-1-yl 4-(Alkoxy) Benzoate Materials. New Frontiers in Physical Science Research Vol. 9, 17–25. https://doi.org/10.9734/bpi/nfpsr/v9/4581B

Issue

New Frontiers in Physical Science Research Vol. 9

Section

Chapters