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Diffraction analysis of highly ordered smectic supramolecules of conjugated rodlike polymers
Author(s) -
Knaapila M.,
Torkkeli M.,
Jokela K.,
Kisko K.,
Horsburgh L. E.,
Pålsson LO.,
Seeck O. H.,
Dolbnya I. P.,
Bras W.,
Ten Brinke G.,
Monkman A. P.,
Ikkala O.,
Serimaa R.
Publication year - 2003
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889803003881
Subject(s) - polymer , side chain , diffraction , materials science , conjugated system , crystallography , dopant , liquid crystal , grazing incidence small angle scattering , scattering , chemistry , optics , doping , small angle neutron scattering , optoelectronics , physics , neutron scattering , composite material
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 h 00, 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.