Manipulating the twist sense of helical nanofilaments of bent-core liquid crystals using rod-shaped, chiral mesogenic dopants. Issue 8 (20th June 2016)

• Record Type: Journal Article
• Authors: Tuchband, Michael R.; Chen, Dong; Horanyi, Balazs; Shuai, Min; Shen, Yongqiang; Korblova, Eva; Walba, David M.; Kapernaum, Nadia; Giesselmann, Frank; Glaser, Matthew A.; Maclennan, Joseph E.; Clark, Noel A.
• Is Part Of: Liquid crystals. Volume 43:Issue 8(2016)
• Page Start: 1083
• Page End: 1091
• Publication Date: 2016-06-20
• Subjects: Bent-core liquid crystals -- helical nanofilaments -- chirality -- NOBOW -- guest/host mixtures; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2016.1159345
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: In some liquid crystal (LC) mixtures of bent-core host molecules that form helical nanofilaments (HNFs) and chiral, rod-shaped molecular guests, the spontaneous chirality of the HNFs is not influenced by the guest handedness. In other mixtures, the filaments become homochiral, responding to the handedness of the guest. We show that the important distinction between these two behaviours is the solubility of the guest material in the HNF phase. In our experiments, chiral LC mesogens doped into the HNF phase result in an enantiomeric imbalance and sometimes change the phase sequence on cooling from the isotropic melt. GRAPHICAL ABSTRACT: