Enhancement of nematic and smectic C phases in soft condensed matter cored by 2, 6-disubstituted naphthalene with varying terminal chains. Issue 1 (2nd January 2020)

• Record Type: Journal Article
• Authors: Tun Nur Iskandar, Nur Amanina Juniasari; Yeap, Guan-Yeow; Maeta, Nobuyuki; Ito, Masato M
• Is Part Of: Soft materials. Volume 18:Issue 1(2020)
• Page Start: 1
• Page End: 7
• Publication Date: 2020-01-02
• Subjects: Liquid crystal -- soft condensed naphthalene -- nematic phase -- smectic C phase; Materials science -- Periodicals; 620.11
• DOI: 10.1080/1539445X.2019.1631847
• Languages: English
• ISSNs: 1539-445X

Abstract

ABSTRACT: A series of new symmetric monomer comprising 2, 6-dihydroxynaphthalene as central unit with extended side arms made up by biphenyl system and the terminal alkoxy chains, OCn H2n+1 (n = 7–12) have been successfully prepared and their mesomorphic behaviors were investigated. The naphthalene derivative with shorter terminal alkoxy chains ranging from n = 7 to n = 10 were found to display enantiotropic nematic (N) phase. The homologues with undecyloxy and dodecyloxy derivatives are enantiotropic N phase with the emergence of monotropic smectic C phase. The rigidity and polarizability of naphthalene core causes wide N phase transition temperature range.