Journal ArticleDOI
Blue Phase, Smectic Fluids, and Unprecedented Sequences in Liquid Crystal Dimers
Channabasaveshwar V. Yelamaggad,Indudhara Swamy Shashikala,Guangxun Liao,Doddamane S. Shankar Rao,Subbarao Krishna Prasad,Quan Li,Antal Jakli +6 more
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TLDR
Several optically pure liquid crystal dimers with strong molecular chirality, synthesized by covalently linking an achiral bent-core unit with a bulky pro-mesogenic rodlike chiral entity through a flexible spacer, display amorphous blue phase, smectic phases, and new sequences.Abstract:
Several optically pure liquid crystal dimers with strong molecular chirality, synthesized by covalently linking an achiral bent-core unit with a bulky pro-mesogenic rodlike chiral entity through a flexible spacer, display amorphous blue phase, smectic phases, and new sequences.read more
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Journal ArticleDOI
Liquid crystal dimers and higher oligomers: between monomers and polymers
TL;DR: The underlying theme of this Critical Review is the relationship between molecular structure and liquid crystalline behaviour in a class of materials referred to as liquid crystal oligomers, and how this molecular architecture has been exploited to address issues in a range of quite different areas and has given rise to potential applications for these materials.
Journal ArticleDOI
Biaxial nematic phases
TL;DR: An overview of the current state of research in the field of biaxial nematic liquid crystalline materials is given in this paper, where the major theoretical concepts are outlined, including the classification to different symmetries, the importance of cooperativity and cluster formation for the development of BN order and the conditions for the establishment of field induced and spontaneous BN in nematic phases.
Journal ArticleDOI
Nematic phases of bent-core mesogens
TL;DR: In this article, a temperature dependent stepwise transition from cybotactic nematic phases to different types of non-polar and tilted smectic phases (SmC(I) and SmC(II)) is observed with a mesophase composed of elongated, but not yet fused cybactic clusters (CybC) as an intermediate state of this transition.
Journal ArticleDOI
Bent-core liquid crystals in the route to functional materials
Jesús Etxebarria,M. Blanca Ros +1 more
TL;DR: Several results on bent-core liquid crystals considered as new supramolecular functional materials with potential for applications are reviewed in this article, where various topics are discussed where these materials present unique attributes with clear advantages over conventional mesogens.
Journal ArticleDOI
Liquid crystals of the twenty-first century – nematic phase of bent-core molecules
TL;DR: A comprehensive review of the main research directions and results can be found in this article, where the authors describe the properties of smectic nano clusters often observed in BCNs, and discuss rheological properties that reveal unusually large viscosities and small twist and bend elastic constants.
References
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MonographDOI
Supramolecular Chemistry: Concepts and Perspectives
TL;DR: From molecular to supramolescular chemistry: concepts and language of supramolecular chemistry, molecular recognition, information, complementarity molecular receptors - design principles and more.
Journal ArticleDOI
Polymer-stabilized liquid crystal blue phases
Hirotsugu Kikuchi,Hirotsugu Kikuchi,Masayuki Yokota,Yoshiaki Hisakado,Huai Yang,Tisato Kajiyama +5 more
TL;DR: This work shows the stabilization of blue phases over a temperature range of more than 60 K including room temperature (260–326 K), and demonstrates an electro-optical switching with a response time of the order of 10−4 s for the stabilized blue phases at room temperature.
Journal ArticleDOI
Distinct ferroelectric smectic liquid crystals consisting of banana shaped achiral molecules
TL;DR: In this article, the synthesis of a banana-shaped molecule is reported and it is found that the smectic phase which it forms is biaxial with the molecules packed in the best direction into a layer.
Journal ArticleDOI
Spontaneous formation of macroscopic chiral domains in a fluid smectic phase of achiral molecules
Darren R. Link,Giorgio Natale,Renfan Shao,Joseph E. Maclennan,Noel A. Clark,Eva Korblova,David M. Walba +6 more
TL;DR: A smectic liquid-crystal phase made from achiral molecules with bent cores was found to have fluid layers that exhibit two spontaneous symmetry-breaking instabilities: polar molecular orientational ordering about the layer normal and molecular tilt.
Journal ArticleDOI
A ferroelectric liquid crystal conglomerate composed of racemic molecules
David M. Walba,Eva Korblova,Renfan Shao,Joseph E. Maclennan,Darren R. Link,Matthew A. Glaser,Noel A. Clark +6 more
TL;DR: The design and synthesis of a ferroelectric liquid crystal composed of racemic molecules and shows the thermodynamically stable structure to be a uniformly tilted smectic bow-phase (banana phase), with all layer pairs homochiral and ferroElectric (SmCSPF).