Stable, low-temperature discotic nematic superstructures by incorporating a laterally substituted sidearm in hexakis(phenylethynyl)benzene discogens

Shih Chien Chien, Hsiu Hui Chen, Hsin Chou Chen, Yu Ling Yang, Hsiu Fu Hsu*, Tzenge Lien Shih, Jey Jau Lee

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

23 Scopus citations

Abstract

A new strategy for preparing room-temperature discotic nematic materials is proposed and developed stepwise to improve various discotic nematic properties. This approach replaces one sidearm of the discotic hexakis(4- hexyloxyphenylethynyl)benzene with a tris(alkoxy) sidearm, 1-ethynyl-2,3,4- tris(hexyloxybenzene), to lower transition temperatures, manipulate discotic nematic ranges, and preserve the discotic nematic superstructure while preventing column formation. Although symmetry considerations play a role in the resulting mesogenic properties, steric hindrance and van der Waals interactions are ascribed to the superior discotic nematic properties of the newly prepared discogens containing a laterally substituted sidearm.

Original languageEnglish
Pages (from-to)1896-1902
Number of pages7
JournalAdvanced Functional Materials
Volume17
Issue number12
DOIs
StatePublished - 13 08 2007
Externally publishedYes

Fingerprint

Dive into the research topics of 'Stable, low-temperature discotic nematic superstructures by incorporating a laterally substituted sidearm in hexakis(phenylethynyl)benzene discogens'. Together they form a unique fingerprint.

Cite this