Silicon-containing polyphilic bent-core molecules: the importance of nanosegregation for the development of chirality and polar order in liquid crystalline phases formed by achiral molecules

Journal of the American Chemical Society
Christina KeithCarsten Tschierske

Abstract

Polyphilic molecules composed of a bent aromatic core, oligo(siloxane) units, and alkyl segments were synthesized, and the self-organization of these molecules was investigated. Most materials organize into polar smectic liquid crystalline phases. The switching process of these mesophases changes from antiferroelectric for the nonsilylated compounds via superparaelectric to surface-stabilized ferroelectric with increasing segregation of the silylated segments. It is proposed that the siloxane sublayers stabilize a polar synclinic ferroelectric (SmC(s)P(F)) structure, and the escape from a macroscopic polar order as well as steric effects leads to a deformation of the layers with formation of disordered microdomains, giving rise to optical isotropy. Another striking feature is the spontaneous formation of chiral domains with opposite handedness. For two compounds, a temperature-dependent inversion of the optical rotation of these domains was found, and this is associated with an increase of the tilt angle of the molecules from < 45 degrees to > 50 degrees. This observation confirms the recently proposed concept of layer optical chirality (Hough, L. E.; Clark, N. A. Phys. Rev. Lett. 2005, 95, 107802), which is a new source of opt...Continue Reading

References

Oct 14, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·J KatsarasJ F Nagle
Dec 22, 2000·Accounts of Chemical Research·D W Bruce
Mar 30, 2002·Science·D N Reinhoudt, M Crego-Calama
Feb 22, 2003·Science·Goran UngarWook-Dong Cho
Aug 9, 2003·Science·Loren H RiesebergChristian Lexer
Aug 26, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J OrtegaM B Ros
Oct 4, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Kheya SenguptaJohn Katsaras
Dec 20, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Michi NakataHideo Takezoe
Mar 5, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J OrtegaM A Pérez-Jubindo
Mar 11, 2004·The European Physical Journal. E, Soft Matter·M F AchardJ C Rouillon
Mar 12, 2004·Nature·Xiangbing ZengJamie K Hobbs
Mar 25, 2004·Journal of the American Chemical Society·Lionel GehringerBertrand Donnio
Nov 4, 2004·Journal of the American Chemical Society·Christina KeithCarsten Tschierske
Mar 24, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·David J EarlMark R Wilson
Jul 5, 2005·Science·Jon Cohen
Aug 19, 2005·Nature·Harry J Coles, Mikhail N Pivnenko
Oct 4, 2005·Physical Review Letters·L E Hough, N A Clark
Oct 26, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E GoreckaB Zeks

❮ Previous
Next ❯

Citations

Sep 20, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Yan JiEugene M Terentjev
Jul 9, 2009·Chemical Communications : Chem Comm·R Amaranatha ReddyCarsten Tschierske
Nov 30, 2013·The European Physical Journal. E, Soft Matter·B I OstrovskiiW H de Jeu
Feb 24, 2006·Angewandte Chemie·R Amaranatha ReddyCarsten Tschierske
Feb 15, 2017·Chemistry : a European Journal·Mohamed AlaasarCarsten Tschierske
Feb 9, 2017·Physical Chemistry Chemical Physics : PCCP·Nerea SebastiánCarsten Tschierske
Jun 21, 2007·Chemical Communications : Chem Comm·Benjamin GlettnerCarsten Tschierske
Feb 15, 2019·Chemistry : a European Journal·Mohamed AlaasarCarsten Tschierske
Aug 13, 2013·Angewandte Chemie·Carsten Tschierske
Apr 30, 2014·Beilstein Journal of Organic Chemistry·Anna KovářováNatalia Podoliak
Sep 30, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Carsten Tschierske, Goran Ungar
Nov 5, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Paul HeinzBernhard Rieger
Jun 13, 2012·Chemistry : a European Journal·Shih-Chieh LinChain-Shu Hsu
Oct 1, 2016·Advanced Materials·Koen NickmansAlbertus P H J Schenning
Nov 9, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Lingfeng GuoHideo Takezoe
Aug 7, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·C L FolciaJ Etxebarria
Oct 10, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J Martínez-PerdigueroJ Ortega
Mar 21, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J Martínez-PerdigueroD B Amabilino
Nov 13, 2008·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·I AlonsoM B Ros
May 14, 2011·The Journal of Organic Chemistry·Masahiro TanakaTakeharu Haino
Aug 30, 2011·Journal of the American Chemical Society·Wei-Hong ChenHong-Cheu Lin
Jul 21, 2015·Chemical Reviews·Minghua LiuTianyu Wang
Jul 26, 2012·Journal of the American Chemical Society·Ho-Joong KimMyongsoo Lee
Nov 7, 2012·The Journal of Organic Chemistry·Laura de VegaKoen Clays
Oct 25, 2017·The Journal of Physical Chemistry. B·Ricardo M F FernandesEduardo F Marques
Sep 4, 2021·Nanoscale·Juncong LiangPengyao Xing

❮ Previous
Next ❯

Related Feeds

Antifungals (ASM)

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.