1. Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers
- Author
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Knaapila, M, Torkkeli, M, Jokela, K, Kisko, K, Horsburgh, LE, Palsson, LO, Seeck, OH, Dolbnya, IP, Bras, W, ten Brinke, G, Monkman, AP, Ikkala, O, Serimaa, R, Pålsson, L-O., Polymer Chemistry and Bioengineering, and Zernike Institute for Advanced Materials
- Subjects
Diffraction ,Stereochemistry ,02 engineering and technology ,FILMS ,010402 general chemistry ,01 natural sciences ,General Biochemistry, Genetics and Molecular Biology ,Liquid crystal ,LENGTH ,Side chain ,chemistry.chemical_classification ,Grazing incidence diffraction ,Chemistry ,Scattering ,Small-angle X-ray scattering ,Polymer ,021001 nanoscience & nanotechnology ,POLYPYRIDINE ,0104 chemical sciences ,Crystallography ,PHOTOPHYSICAL PROPERTIES ,ddc:540 ,small-angle X-ray scattering ,grazing incidence ,CHAIN ,Self-assembly ,0210 nano-technology ,TRANSITION - Abstract
A small/wide-angle X-ray scattering and grazing incidence diffraction study of comb-shaped supramolecules of conjugated poly(2,5-pyridinediyl), acid dopant and hydrogen bonded amphiphilic side chains is reported. In solution, polymers are dissolved rodlike particles. When the side-chains are introduced, polymers self-assemble in hierarchic liquid crystals (LC). Diffraction patterns of aligned LC show h00, 020, and 004 reflections, and additional small-angle reflections along the polymer axis. A triangular correlation function indicating a very large correlation length is seen along the smectic axis. An aligned solid structure can be formed by cleaving side chains from the aligned LC.
- Published
- 2003
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