Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent

Sie Tiong Ha*, Lay Khoon Ong, Siew Ling Lee, Hong-Cheu Lin, Yip Foo Win, Siew Teng Ong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A homologous series of Schiff base esters, 4-chlorobenzylidene-4′-n-alkanoyloxyanilines, containing even number of carbons at the end groups of the molecules (Cn-1H2n-1COO-, n = 4, 6, 8, 10, 12, 14, 16) were synthesized. The mesomorphic properties were investigated by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). It was found that the end groups of the molecules had an effect on the mesomorphic properties. n-Butanoyloxy was found non-mesogenic, whilst n-hexanoyloxy exhibited monotropic smectic phase. The higher members in this homologous series were enantiotropic smectogens.

Original languageEnglish
Pages (from-to)637-640
Number of pages4
JournalChinese Chemical Letters
Volume21
Issue number6
DOIs
StatePublished - 1 Jun 2010

Keywords

  • Liquid crystal
  • Schiff base esters
  • Smectic A
  • Smectic B

Fingerprint Dive into the research topics of 'Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent'. Together they form a unique fingerprint.

Cite this