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Macroscopically aligned films of discotic phthalocyanine by zone casting

par Traczl, A.;Makowski, Tomasz;Masirek, Sylwia;Pisula, Wojciech;Geerts, Yves
Référence Nanotechnology, 18, page (485303)
Publication Publié, 2007

Article révisé par les pairs

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Résumé :

This work describes a room temperature liquid crystalline phthalocyanine processed by using zone casting. Highly oriented films that were uniform over several square centimeters were obtained on glass support from a mixed solvent (1:1 mixture of toluene and ethylene chloride) solution. A columnar planar alignment of Colr in the film layers has been determined by optical polarized microscopy, ultraviolet-visible absorption, atomic force microscopy and x-ray diffraction studies. The films consist of uniaxially oriented ribbon-like structures with molecular columns perpendicular to the solidification direction. The pronounced alignment makes these thin films promising for application in optoelectronic devices. © IOP Publishing Ltd.