Synthesis and characterization of new pyridine-based chiral calamitic liquid crystals

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Vardar D., OCAK H., Akdaş Kılıç H., Jeannin O., Camerel F., Eran B. B.

Liquid Crystals, cilt.48, sa.6, ss.850-861, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 6
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1080/02678292.2020.1825841
  • Dergi Adı: Liquid Crystals
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.850-861
  • Anahtar Kelimeler: Liquid crystal, pyridine, calamitic compounds, nicotinate, picolinate, chiral chain, BEHAVIOR, SERIES
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

© 2020 Informa UK Limited, trading as Taylor & Francis Group.In this paper, novel chiral calamitic compounds, consisting of n-dodecyloxyphenyl substituted pyridine carboxylate core linked to one or two benzene rings through ester linkers have been synthesised by multi-step procedures. The other end has been varied by introducing a flexible (S)-2-methylbutyloxy or (S)-3,7-dimethyloctyloxy chiral chain. The liquid crystal properties of new compounds were investigated by various experimental techniques such as DSC, POM and SAXS. The pyridine-based calamitic compounds exhibited enantiotropic chiral smectic mesophases such as SmC*, SmA or uncharacteristic mesophase depending on hetero aromatic rings such as nicotinate or picolinate cores, number of aromatic rings and the type of chiral-branched chain.