Liquid crystalline dimers containing a cholesteryl group: chiral smectic phases and TGBA* phase. Issue 12 (26th September 2021)

• Record Type: Journal Article
• Authors: Huang, Hao-Zhou; Cong, Yue-Hua; Du, An; Hu, Bing; Zhang, Bao-Yan
• Is Part Of: Liquid crystals. Volume 48:Issue 12(2021)
• Page Start: 1733
• Page End: 1749
• Publication Date: 2021-09-26
• Subjects: Twist grain boundary phase -- chiral liquid crystal -- phase transition -- Schiff base; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2021.1900431
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: A new series of liquid crystalline dimers containing a cholesteryl group were synthesised, exhibiting multiple mesophases including chiral smectic phases (SmC* and SmA*), twist grain boundary phases (TGBA*), and chiral nematic phase (N*). The chemical structure and liquid crystal properties of the dimers were characterised by FTIR, 1 H-NMR, DSC, POM and XRD. It was in evidence that the lengths of the terminal tail and the flexible spacer were the decisive factors of the mesophase behaviours. GRAPHICAL ABSTRACT: uf0001