Functional π-Gelators and Their Applications

Supramolecular Chirality in Self-Assembled Systems

Department of Chemistry, Department of Radiology, Washington University in Saint Louis, Saint Louis, Missouri 63130, Department of Chemistry, Texas A&M University, College Station, Texas 77842, Cancer Center Karolinska, Department of Oncology-Pathology CCK, R8:03 Karolinska Hospital and Institute, SE-171 76 Stockholm, Sweden, and Department of Chemistry and Biochemistry, Department of Materials, and Materials Research Laboratory, University of California, Santa Barbara, California 93106

/pdf/applications-of-orthogonal-click-chemistries-in-the-3vuh4s7zls.pdf

Applications of Orthogonal “Click” Chemistries in the Synthesis of Functional Soft Materials

Ionic liquid crystals.

Dendron-mediated self-assembly, disassembly, and self-organization of complex systems have been investigated. The most ideal building blocks would need to display shape persistence in solution and in the solid state, since only this feature provides access to the use of complementary methods of structural analysis. Most supramolecular dendrimers are chiral even when they are constructed from nonchiral building blocks and are equipped with mechanisms that amplify chirality. This poses additional challenges associated with the understanding of the structural origin of chirality in different supramolecular structures through combinations of structural analysis methods. While many supramolecular structures assembled from dendrimers and dendrons resemble some of the related morphologies generated from block-copolymers, they are much more complex and are not determined by the volume ratio between the dissimilar parts of the molecule.

Dendron-Mediated Self-Assembly, Disassembly, and Self-Organization of Complex Systems

A ferroelectric liquid crystal dimer: Synthesis and properties†

In this tutorial review we describe some studies concerning liquid crystal dendritic polymers. We have chosen to present several representative examples that illustrate the diverse kinds of LC dendritic structures, namely: dendrimers, dendrons, dendronized polymers and hyperbranched polymers. We review their synthesis, mesogenic properties and the way that they are arranged to form supramolecular liquid crystal assemblies.

Highly congested liquid crystal structures: dendrimers, dendrons, dendronized and hyperbranched polymers.

This work has been supported by CTQ2007-65683/BQU, (CTQ2009- 09030), S2009/MAT-1756/CAM, MiUR through the PRIN 2007 (2007WJMF2W) project, Gobierno de Aragon, 200960I086 PIE.

High charge mobility in discotic liquid-crystalline triindoles: just a core business?

The synthesis and characterization of two families of ionic liquid crystal dendrimers consisting of the ammonium salts of the commercially available poly(amidoamine) (G = 0-5) and poly(propylene imine) (G = 1-5) dendrimers and three long-chain carboxylic acids are reported. The liquid crystalline behavior was investigated by means of differential scanning calorimetry, polarizing light optical microscopy, and X-ray diffractometry. The thermal stability of the ionic materials was further studied by NMR. Most of the dendrimers show lamellar mesomorphism, and two of them exhibit columnar mesomorphism. On the basis of the experimental results, we propose models both at the molecular level and in the mesophase for all the materials.

Ionic thermotropic liquid crystal dendrimers.

A new class of conducting discotic liquid crystals is identified in recently synthesized derivatives of heptacyclic triindole, which combine the hole transport properties of the carbazole unit with...

Ana Omenat

Papers

A ferroelectric liquid crystal dimer: Synthesis and properties†

Highly congested liquid crystal structures: dendrimers, dendrons, dendronized and hyperbranched polymers.

High charge mobility in discotic liquid-crystalline triindoles: just a core business?

Ionic thermotropic liquid crystal dendrimers.

New Electrode-Friendly Triindole Columnar phases with High Hole Mobility