Polymeric Quasicrystal: Mesoscopic Quasicrystalline Tiling inStar Polymers
Top Cited Papers
- 8 May 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 98 (19), 195502
- https://doi.org/10.1103/physrevlett.98.195502
Abstract
A mesoscopic tiling pattern with 12-fold symmetry has been observed in a three-component polymer system composed of polyisoprene, polystyrene, and poly(2-vinylpyridine) which forms a star-shaped terpolymer, and a polystyrene homopolymer blend. Transmission electron microscopy images reveal a nonperiodic tiling pattern covered with equilateral triangles and squares, their triangle/square number ratio of 2.3 (approximately equal to 4/sqrt[3]), and a microbeam x-ray diffraction pattern shows dodecagonal symmetry. The same kind of quasicrystalline structures have been found for metal alloys (approximately 0.5 nm), chalcogenides (approximately 2 nm), and liquid crystals (approximately 10 nm). The present result (approximately 50 nm) confirms the universal nature of dodecagonal quasicrystals over several hierarchical length scales.Keywords
This publication has 32 references indexed in Scilit:
- Systematic Transitions of Tiling Patterns Formed by ABC Star-Shaped TerpolymersMacromolecules, 2006
- Archimedean Tiling Patterns of ABC Star-Shaped Terpolymers Studied by Microbeam Small-Angle X-ray ScatteringMacromolecules, 2006
- A mesoscopic Archimedean tiling having a new complexity in an ABC star polymerJournal of Polymer Science Part B: Polymer Physics, 2005
- Observation of Cylinder-Based Microphase-Separated Structures from ABC Star-Shaped Terpolymers Investigated by Electron Computerized TomographyMacromolecules, 2004
- Monte Carlo Simulations of the Morphology of ABC Star Polymers Using the Diagonal Bond MethodMacromolecules, 2002
- Direct Evidence for Confinement of Junctions to Lines in an 3 Miktoarm Star Terpolymer Microdomain StructureMacromolecules, 1998
- A Dodecagonal Quasicrystalline ChalcogenideAngewandte Chemie-International Edition, 1998
- Structural Polymorphism of Amphiphilic Copolymers: Six Lyotropic Liquid Crystalline and Two Solution Phases in a Poly(oxybutylene)-b-poly(oxyethylene)−Water−Xylene SystemLangmuir, 1997
- Quasicrystals: A New Class of Ordered StructuresPhysical Review Letters, 1984
- Metallic Phase with Long-Range Orientational Order and No Translational SymmetryPhysical Review Letters, 1984