Synthesis and characterization of smectic polymorphism in higher homologues of N-(p-n-alkoxybenzylidene)-p-n-(alkylanilines)

Venkata G K M Pisipati, A. K. George, Ch Srinivasu, P. N. Murty

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Higher homologues of N-(p-n-alkoxybenzylidene)-p-n-alkylanilines (nO.m) compounds with n = 15 and 18 and m =4 to 10, 12, 14, and 16 have been synthesized and the smectic polymesomorphism is studied. The transition temperatures were obtained both from thermal polarizing microscopy and differential scanning calorimetry. The compounds exhibit a smectic-F phase from the isotropic melt, their amount increasing with the number of the alkoxy chain. This implies that with the alkoxy chain number the manifestation of smectic-F occurs with shorter alkyl chain. The phase variants were confirmed with miscibility studies.

Original languageEnglish
Pages (from-to)103-108
Number of pages6
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume58
Issue number2-3
Publication statusPublished - Feb 2003
Externally publishedYes

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polymorphism
Polymorphism
Synthesis
synthesis
Differential scanning calorimetry
Microscopic examination
heat measurement
solubility
Solubility
transition temperature
microscopy
Microscopy
scanning
Scanning
Imply
alkoxyl radical
Hot Temperature

Keywords

  • Miscibility Studies
  • nO.m Compounds
  • Phase Diagrams
  • Smectic Polymorphism
  • Smectic-F

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Synthesis and characterization of smectic polymorphism in higher homologues of N-(p-n-alkoxybenzylidene)-p-n-(alkylanilines). / Pisipati, Venkata G K M; George, A. K.; Srinivasu, Ch; Murty, P. N.

In: Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, Vol. 58, No. 2-3, 02.2003, p. 103-108.

Research output: Contribution to journalArticle

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