Design and Synthesis of Chiral Nematic Liquid Crystal Twist Agents

Slides:

Advertisements

Similar presentations

C11 Liquid Crystals (HL) C11.1 Identify molecules that are likely to show liquid-crystal properties, and explain their liquid-crystal behavior on a molecular.

Advertisements

Wavelength Tuning of the Photonic Band Gap in Chiral Liquid Crystals using Electrically Commanded Surfaces A. CONCEPT Further reading: 1) L. Komitov, B.

Mesogenic Properties of Noncollinear (Bent) Liquid Crystals Applications to Environmental Sensing David Davis, Kent State University Advisor: Dr. Robert.

Chiral liquid crystals-art and science Dr. M. Manickam School of Chemistry The University of Birmingham CHM3T1 Lecture-5.

The Science and Technology of Liquid Crystals Peter J. Collings Department of Physics & Astronomy Swarthmore College June 21, 2007 Return to "Recent Talks"

Www-g.eng.cam.ac.uk/CMMPE H.J. Coles, T.D. Wilkinson C. Dobson, S. Findeisen-Tandel, D. Gardiner, C. Gillespie, O. Hadeler, P. Hands, Q. Malik, S. Morris,

Phase Difference = Phase Difference = 0.05.

Liquid Crystal Devices. Agenda Molecular Properties Thermal, Electric/Magnetic, Optic Effects Applications References.

Science Update Programme Liquid Crystals and Their Applications

Side Chain Liquid Crystalline Polymers Polymers with mesogens attached as side chains can exhibit liquid crystalline properties. The extent to which.

Ferronematic Fredericksz Transition LCMRC researchers are exploring the recently discovered ferronematic liquid crystal phase, revealing a dramatic polar.

About OMICS Group OMICS Group International is an amalgamation of Open Access publications and worldwide international science conferences and events.

Biological Membranes Penghui Lin Nov Membranes

An intriguing example of how chirally enriched amino acids in the prebiotic world can generate sugars with D-configuration & with enantioenrichment: Cordova.

The authors gratefully acknowledge the financial support of the EPSRC High slope efficiency liquid crystal lasers designed through material parameter optimisation.

Amino Acids Stryer Short Course Chapter 3. Amino Acid Structure Alpha carbon Sidechain Proteins peptides.

Department of Chemistry Seminar Announcement Date/Time/VenueTitle/Speaker 27 Jan (Thu) 11am – S8 Level 3 Executive Classroom Effect of Highly Fluorinated.

C11 Liquid Crystals (HL) C11.1 Identify molecules that are likely to show liquid-crystal properties, and explain their liquid-crystal behavior on a molecular.

Sydnone Chemistry and Microwave Assisted Synthesis of Sydnonyl-Substituted Imidazoles (I) Mei-Hsiu Shih Department of Chemical and Material Engineering.

Sonogashira Coupling and Application in LC Synthesis Nov.21,2003 Weijuan Jia.

Liquid crystals : The fourth state of matter Thierry Chuard, LLB, Universität Bern.

DNA and RNA. Rosalind Franklin Worked with x-ray crystallography Discovered: That DNA had a helical structure with two strands.

1 Advanced Biochemistry 高等生化學 Nucleotides and Nucleic Acids 陳威戎.

Liquid Crystals Thermotropic (temperature dependent)

Liquid crystals : The fourth state of matter Thierry Chuard, Universität Bern.

Waxesters Wax esters are produced by combining one fatty alcohol molecule with one fatty acid. Organic acids typically have a carboxyl (-COOH) group. Alcohols.

Observed Phase Behavior

MVGR College of Engineering

Chemical synthesis of Peptide

4EOBBA/2RP/nSBZ Networks Results/Observations Synthetic Methodologies

Amino Acids and Proteins

Resolution of Enantiomers Part II

Only three distinct stereoisomers of 1,3-dimethylcyclohexane are possible. These include a pair of enantiomers (bottom) and a single achiral stereoisomer.

An example of stereoisomers that are achiral (not chiral)

Only three of a maximum possible four stereoisomers exists for the molecule shown. These include a pair of enantiomers and a single meso compound. Meso.

Liquid Crystals The Fourth State of Matter? Dr. Vance Williams

Modulation of Photoswitching Profiles by 10,11 Dialkoxy-methyl Substituents in C2-Symmetric Dibenzosuberane-Based Helicenes Wen-Ching Chen,[b] Po-Chiao.

انواع المخاليط (التدريس الابداعي )

Temperature-independent pitch invariance in cholesteric liquid crystal

Effect of Fluoro-Amino Acids on Protein Secondary Structure Stability

Laser- and Electric-Field-Induced Nucleation in Supersaturated Solutions and Supercooled Melts Bruce A. Garetz, Department of Chemical & Biological Sciences,

Competition between Mesogens in Pyridone-Based Supramolecular Calamitic, Banana, and Discotic Liquid Crystals Kurt N. Wiegel. Department of Chemistry,

Intramolecular Chiral Relay at Stereogenic Nitrogen: Design, Synthesis, and Application of Oxadiazinones as Chiral Auxiliaries Shawn R. Hitchcock, Department.

Design and Synthesis of Chiral Nematic Liquid Crystal Twist Agents

Novel Metal Organic Framework (MOF) Membranes and Microporous Carbon Membranes Derived from MOF for Natural Gas Purification M.A. Carreon, B. G. Trewyn,

Liquid Crystals LCMRC researchers have discovered that solutions in water of pieces of DNA only a few nanometers long (nanoDNA) can form liquid crystal.

New Chiral Solid Catalysts for Oxidation Reactions

Abigail G. Doyle, Department of Chemistry, Princeton University

Biology, 9th ed,Sylvia Mader

•The Twist-Bend Nematic phase

B-Hydroxysalicylhydrazones: Chiral, non-racemic tridentate catalysts for asymmetric synthesis Shawn R. Hitchcock, Department of Chemistry, Illinois State.

Competition Between Mesogens in Pyridone-based Supramolecular Calamitic, Banana and Discotic Liquid Crystals. Kurt N. Wiegel, Department of Chemistry,

The Chemical Biology of Apoptosis

Endo. T(oC) -5oC/min Iso. K4 K3 K2 K1

Paper introduction Yuna Kim

Dr. S. B Maulage Dept of Chemistry.

Shawn R. Hitchcock, Department of Chemistry, Illinois State University

Angew. Chem. Int. Ed. 2014, Early view

Competition Between Mesogens in Pyridone-based Supramolecular Calamitic, Banana and Discotic Liquid Crystals. Kurt N. Wiegel, Department of Chemistry,

Asymmetric Synthesis Dr. S. Mangalaraj Assistant Professor

D × t % A Wt. of liquid Wt. of water × dwd =.

Photoresponsive chiral dopant

Effect of Fluoro-Amino Acids on Protein Secondary Structure Stability

Hydrocarbon, Fluorocarbon, and Mixed Hydrocarbon/Fluorocarbon Liquid Crystalline Materials from Predictable Supramolecular Assembly of Piperazine-2,5-diones.

Macroscopic motion of supramolecular assemblies actuated

How is helical inversion?

Hydrocarbon, Fluorocarbon, and Mixed Hydrocarbon/Fluorocarbon Liquid Crystalline Materials from Predictable Supramolecular Assembly of Piperazine-2,5-diones.

Introduction Although the LC mixtures composed of nematic or cholesteric liquid crystals (LCs) and azobenzene compounds have been comprehensively studied,

Presentation transcript:

Design and Synthesis of Chiral Nematic Liquid Crystal Twist Agents James A. Rego Department of Chemistry, California State Polytechnic University, Pomona The chiral nematic liquid crystal phase - the typical organic component of LC displays - possesses a supramolecular helical ordering. We have synthesized four new helix-inducing diamide dopants derived from L-amino acids and structurally analogous to Merck S1011. Add twist agent Achiral Nematic Chiral Nematic Helical Twisting Power = 1/p·c·r p = pitch, c = wt.%, r = % e.e. Synthetic efforts toward Amido-ester dopants: