Dresden 2014 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Poster Session 2

CPP 37.58: Poster

Wednesday, April 2, 2014, 15:00–19:00, P3

Light hinders ordering in polyaniline — Elizaveta Alekseeva, Elena Tomšík, and •Natalia Gospodinova — Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic

Liotropic liquid crystalline state with features of chromonic mesophase [1] and J-aggregates [2] is shown to precede formation of highly crystalline self-oriented polyaniline films during water evaporation. Importantly, that not only increase of temperature but also exposition to non-polarized light substantially hinders self-assembly into liquid crystalline state which is prerequisite for formation of fibril-like crystals building polycrystalline polyaniline films. X-ray diffraction, optical microscopy and optical absorption spectroscopy have been employed in this study.

[1] J. Lydon, Liquid Crystals, 2011, 38, 11-12, 1663-1681, and references therein

[2] S. E. Sheppard, Rev. Mod. Phys. 1942, 14, 303.