Structures and properties of dendrimers having peripheral 2,3‐difluorobiphenyl mesogenic units: effects of dendrimer generation
Authors:
- 1 May 2005
- journal article
- other
- Published by Taylor & Francis in Liquid Crystals
- Vol. 32 (5) , 633-642
Abstract
1st–5th generation poly(propyleneimine) dendrimers having peripheral 2,3‐difluorobiphenyl mesogenic groups have been synthesized. They exhibited smectic liquid crystalline behaviour. All the liquid crystalline dendrimers exhibited a smectic A (SmA) phase and a crystal E (E) phase. The SmA–isotropic phase transition temperature increased with increasing generation. In addition, a homeotropic structure was spontaneously formed on a glass plate in the SmA phase for the 2nd, 3rd, and 4th generation dendrimers. The hometropic structure remained unchanged in the phase.Keywords
This publication has 20 references indexed in Scilit:
- Evanescent Waveguide and Photochemical Characterization of Azobenzene-Functionalized Dendrimer Ultrathin FilmsLangmuir, 2002
- Carbosilane Liquid Crystalline Dendrimers: From Molecular Architecture to Supramolecular NanostructuresMacromolecules, 2000
- Poly(propyleneimine) Dendrimers Peripherally Modified with MesogensMacromolecules, 1999
- Liquid crystalline dendrimer of the fifth generation: From lamellar to columnar structure in thermotropic mesophasesLiquid Crystals, 1999
- Liquid-Crystalline Properties of Poly(propylene imine) Dendrimers Functionalized with Cyanobiphenyl Mesogens at the PeripheryChemistry – A European Journal, 1998
- Kerr effect in solutions of carbosilane dendrimers with terminal mesogenic groupsLiquid Crystals, 1998
- Synthesis of a Novel Dendritic Liquid Crystalline Polymer Showing a Ferroelectric SmC* PhaseJournal of the American Chemical Society, 1998
- Liquid crystalline carbosilane dendrimers: First generationLiquid Crystals, 1996
- Mono- and Multilayers of Mesogen-Substituted Carbosilane Dendrimers on MicaMacromolecules, 1996
- Rational Design of the First Nonspherical Dendrimer Which Displays Calamitic Nematic and Smectic Thermotropic Liquid Crystalline PhasesJournal of the American Chemical Society, 1995