Alignment Behavior of Discotic Nematic and Rectangular Columnar Mesophases on Self-Assembled Monolayers of Alkanethiol and Asymmetrical Alkyl Disulfide

Autor:	Hiroaki Azehara, Kenji Kiyohara, Hirosato Monobe, Yo Shimizu, Akihiko Nakasa, Naohiro Terasawa, Masamichi Fujihira
Rok vydání:	2004
Předmět:	chemistry.chemical_classification Materials science Discotic liquid crystal Mesophase Triphenylene Self-assembled monolayer General Chemistry Condensed Matter Physics Crystallography chemistry.chemical_compound chemistry Liquid crystal Monolayer General Materials Science Columnar phase Alkyl
Zdroj:	Molecular Crystals and Liquid Crystals. 412:229-236
ISSN:	1563-5287 1542-1406
DOI:	10.1080/15421400490439851
Popis:	Alignment behavior of a discotic liquid crystalline triphenylene (C8OBTP) on substrates coated with self-assembled monolayers (SAMs) of alkanethiol and asymmetrical alkyl disulfide was investigated by polarized microscopy. Discotic nematic (ND) and rectangular columnar (Colr) phases of C8OBTP shows a different alignment behavior depending on the element of SAMs. C8OBTP exhibits a fan-shaped texture on an alkanethiol SAM in Colr phase, while it has a tendency to show a planar alignment on asymmetrical alkyl disulfide SAM. The different elements of the SAM could influence the alignment behavior of discotic liquid crystal distinctly even in columnar mesophase which has highly self-cohesive forces of systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2bff52d0f7528f40e2f7662531e62288 https://doi.org/10.1080/15421400490439851 Zobrazit plný text záznamu