By the same authors

From the same journal

Structural study of smectic A phases in homologous series of N-alkylpyridinium alkylsulphates

Research output: Contribution to journalArticle


  • C Cruz
  • B Heinrich
  • A C Ribeiro
  • D W Bruce
  • D Guillon


Publication details

DatePublished - Dec 2000
Issue number12
Number of pages7
Pages (from-to)1625-1631
Original languageEnglish


The mesomorphic properties of 27 homologues of the N-alkylpyridinium alkylsulphate series were studied by X-ray diffraction and dilatometry. All of these compounds exhibit single smectic A phases whose layer spacings are between 0.64 and 0.8 times the molecular length. Polarizing optical microscopy observation shows that these peculiar layer spacings are not due to the tilting of the molecules; a new packing model is proposed to explain the particular structure of these thermotropic ionic liquid crystal phases.

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