Lyotropic columnar liquid crystals based on polycatenar 1H-imidazole amphiphiles and their assembly into bundles at the surface of silicon

Soft Matter
Sang Hyuk SeoJi Young Chang

Abstract

Polycatenar 1-imidazole amphiphiles, consisting of a 1-imidazole head connected through a benzene ring to a trialkyloxyphenyl tail, were synthesized and their self-assembling properties investigated. The H NMR and fluorescence spectroscopy studies showed that in nonpolar solvents, the amphiphiles formed reverse micelles in which the hydrophilic imidazole heads aggregated inside the micelles through intermolecular hydrogen bonding and the nonpolar alkyl chains were located at the periphery of the micelles. In concentrated solutions, they formed lyotropic liquid crystals having columnar hexagonal structures. The molecules were arranged in a disk hydrogen bonding between successive imidazole moieties. When dilute solutions of the amphiphiles in -hexane (0.1 wt%) were spin-coated on to a plasma-cleaned Si wafer, a band-like structure with a width of 60-100 nm was imaged by AFM. Microscopic fiber bundles with a diameter as large as 13 µm were observed by SEM when the lyotropic liquid crystals in 30 wt% hexane solution were dried on the glass.

References

Aug 1, 1978·Angewandte Chemie·F Schneider
Dec 19, 2001·Accounts of Chemical Research·D L GinW J Zhou
Jan 30, 2004·Journal of the American Chemical Society·Masafumi YoshioTakashi Kato
May 27, 2004·Journal of the American Chemical Society·Channabasaveshwar V YelamaggadSubbarao Krishna Prasad
Aug 13, 2004·Nature·Virgil PercecSergei A Vinogradov
Mar 3, 2005·Chemical Communications : Chem Comm·Tomohiro MukaiHiroyuki Ohno
Mar 26, 2005·Chemical Communications : Chem Comm·Ja-Hyoung RyuMyongsoo Lee
Oct 6, 2005·Chemical Communications : Chem Comm·Oana M MartinSandro Mecozzi
Dec 15, 2005·Angewandte Chemie·Takashi KatoKenji Kishimoto
Feb 14, 2006·Proceedings of the National Academy of Sciences of the United States of America·Virgil PercecPaul A Heiney
Jun 3, 2002·Angewandte Chemie·Guangtao LiJürgen-Hinrich Fuhrhop

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Citations

Mar 18, 2010·Chemistry : a European Journal·Xiaohong ChengCarsten Tschierske
Jul 16, 2015·Physical Chemistry Chemical Physics : PCCP·A MaxutH Mechakra
Aug 20, 2009·Chemistry : a European Journal·Robert AbbelAlbertus P H J Schenning
Apr 19, 2016·Chemical Reviews·Karel GoossensKoen Binnemans

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