PMID: 11916420Mar 28, 2002Paper

Enhancement of twisting power in the chiral nematic phase by introducing achiral banana-shaped molecules

Journal of the American Chemical Society
Jirakorn ThisayuktaJunji Watanabe

Abstract

Achiral banana-shaped molecules with dodecyloxy tail groups, P-12-O-PIMB, N-12-O-PIMB, and S-12-O-PIMB, have exhibited unusual smectic phases which possess chiral and helical structures. In this work, we mixed these banana-shaped molecules with the chiral molecule forming a chiral nematic liquid crystal and found an exclusive effect of the achiral dopant that the twisting power of the chiral nematic phase in the mixtures is significantly increased with the increase of the content of achiral banana-shaped molecules. This characteristic effect in the chiral nematic field seems to offer the rational evidence for the twist conformation of such banana-shaped molecules, since the chirality should be included intrinsically within each chain. The asymmetric twist conformation in the ester linkage group connecting the central core with the side wings is likely to be the origin of enhanced twisting power.

Citations

Jun 29, 2005·Chemical Communications : Chem Comm·Verena Görtz, John W Goodby
Feb 18, 2010·Chemical Communications : Chem Comm·Paul Archer, Ingo Dierking
Apr 8, 2006·The Journal of Chemical Physics·Silvia OrlandiClaudio Zannoni
Dec 20, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Michi NakataHideo Takezoe
Oct 17, 2017·Chemical Communications : Chem Comm·Kehua GuRong-Ming Ho
Nov 16, 2018·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·O Stamatoiu, I Dierking
Sep 6, 2006·Angewandte Chemie·Suk-Won ChoiHideo Takezoe
Dec 31, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·P Archer, I Dierking
Jun 13, 2012·Chemistry : a European Journal·Shih-Chieh LinChain-Shu Hsu
Oct 18, 2014·Angewandte Chemie·Miguel CanoM Blanca Ros
Apr 15, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Anish ChakrabortyMalay Kumar Das
Aug 10, 2013·Physical Chemistry Chemical Physics : PCCP·Cristina GrecoAlberta Ferrarini
Sep 21, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Fumito AraokaHideo Takezoe
Oct 10, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Koushi NishidaHideo Takezoe
Mar 24, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·David J EarlMark R Wilson
Jan 15, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J Kirchhoff, L S Hirst
Apr 12, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Suk-Won ChoiHideo Takezoe
Nov 9, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·P S SalterE P Raynes
Oct 26, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E GoreckaB Zeks
Mar 28, 2018·ACS Applied Materials & Interfaces·Chandima BulumullaMihaela C Stefan
Aug 4, 2005·Journal of the American Chemical Society·Seng Kue LeeHideo Takezoe
Apr 20, 2006·Journal of the American Chemical Society·David M WalbaNoel A Clark

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