Effects of interactions with the surface on the orientation of the mesogenic monoazacrown-substituted phthalocyanine films

BASOVA, T., LATTEYER, F., ATILLA, D., GÜREK, A, G,, HASSAN, A., AHSEN, V., PEISERT, H. and CHASSÈ, T. (2010). Effects of interactions with the surface on the orientation of the mesogenic monoazacrown-substituted phthalocyanine films. Thin Solid Films, 518 (20), p. 5745.

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Abstract

In this paper, the effect of interaction with the substrate surface on the orientation of films' molecules of substituted liquid crystalline phthalocyanines M(II)Pc (M = Cu, Ni, Zn) having monoazacrown ether moieties on the periphery containing long alkyloxyphenyl N-pivotal groups is studied. The phthalocyanine derivatives demonstrate thermotropic mesophase behaviour and show Colh mesophases over a wide temperature range. The preferential orientation of the phthalocyanine films deposited on glass, silicon and NaCl substrates as well as between two of those substrates is studied by polarized Raman spectroscopy at different temperatures. These phthalocyanines form homeotropically aligned films on the surface of NaCl substrate, whereas planar alignment with a random distribution of the column directors occurs on the glass slides

Item Type:	Article
Research Institute, Centre or Group:	Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number:	10.1016/j.tsf.2010.05.093
Depositing User:	Ann Betterton
Date Deposited:	07 Oct 2010 10:51
Last Modified:	07 Oct 2010 10:51
URI:	http://shura.shu.ac.uk/id/eprint/2535

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