Next Article in Journal
Chemical Constituents of a Marine-Derived Endophytic Fungus Penicillium commune G2M
Previous Article in Journal
Vitamin B12: Unique Metalorganic Compounds and the Most Complex Vitamins
Article Menu

Article Versions

Export Article

Open AccessArticle
Molecules 2010, 15(5), 3260-3269; doi:10.3390/molecules15053260

Synthesis and Liquid Crystalline Properties of New Diols Containing Azomethine Groups

1
School of Industrial Technology, University Sains Malaysia, 11800 Penang, Malaysia
2
School of Chemical Sciences, University Sains Malaysia, 11800 Penang, Malaysia
*
Author to whom correspondence should be addressed.
Received: 10 March 2010 / Revised: 30 March 2010 / Accepted: 6 April 2010 / Published: 30 April 2010
Download PDF [249 KB, 18 June 2014; original version 18 June 2014]

Abstract

A series of new mesogenic azomethine diols were successfully synthesized by condensation reactions between various chloroalkanols and N,N'-bis(4-hydroxy)-benzylidene-o-toluidine (1). The structures of these compounds were confirmed by CHN, FT-IR, 1H-NMR, and 13C-NMR spectrophotometer. Their thermotropic liquid crystalline behavior was studied using differential scanning calorimetry (DSC) and polarizing optical microscope (POM). 4,4'-di(4-Hydroxybutoxy)-N-benzylidine-o-tolidine (2a) does not exhibit liquid crystalline properties. A nematic texture was observed for mesogenic diols 2b, and 2d, whereas the diol 2c exhibits a smectic mesophase. The increase of terminal alkyl chain in these mesogenic diols leads to a decrease in the transition temperature.
Keywords: thermotropic liquid crystal; nematic phase; diols; azomethine thermotropic liquid crystal; nematic phase; diols; azomethine
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Mohammed, I.A.; Sankar, G.; Khairuddean, M.; Mohamad, A.B. Synthesis and Liquid Crystalline Properties of New Diols Containing Azomethine Groups. Molecules 2010, 15, 3260-3269.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top