%0 Journal Article
%A Pouzet, E.
%A De Cupere, V.
%A Heintz, C.
%A Andreasen, J. W.
%A Breiby, D. W.
%A Nielsen, M. M.
%A Viville, P.
%A Lazzaroni, R.
%A Gbabode, G.
%A Geerts, Y. H.
%A DESY
%T Homeotropic Alignment of a Discotic Liquid Crystal Induced by a Sacrificial Layer
%J The journal of physical chemistry  / C
%V 113
%@ 1932-7447
%C Washington, DC
%I Soc.
%M PHPPUBDB-12136
%P 14398-14406
%D 2009
%Z © American Chemical Society; Post referee fulltext in progress; Embargo 12 months from publication
%X A convenient method to induce face-on orientation of an alkoxy phtalocyanine discotic mesogen is described.The alignment is imposed by the confinement of the discotic thin films with a top sacrificial polymer layerthat is easily removed by washing with a selective solvent, after thermal annealing. Thin films have beencharacterized by optical and atomic force microscopy, UV-Vis absorption spectroscopy, and grazing incidencewide angle X-ray scattering. The data converge in showing the central role of the sacrificial layer in promotingalignment with the planar molecules orienting parallel to the substrate in an essentially homeotropic arrangementover large lateral length scales and the persistence of this desirable alignment after removal of the layer
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000268661300051
%R 10.1021/jp9035343
%U https://bib-pubdb1.desy.de/record/90449