Thin Films of Liquid Crystalline Phthalocyanines and their its Composites with Single-Walled Carbon Nanotubes: Properties and Alignment

In this study, liquid crystalline copper phthalocyanine and single walled carbon nanotubes were dispersed in solution to prepare novel composites. Thin films of these composites prepared by solving of the composite in dimetylformamide and then by spin coating the solution onto the substrates were st...

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Bibliographic Details
Published in:Key engineering materials 2012-12, Vol.531-532, p.337-341
Main Authors: Esenpinar, Aliye Aslı, Basova, Tamara, Gürek, Ayşe Gül, Durmuş, Mahmut, Ahsen, Vefa, Tuncel, Sinem
Format: Article
Language:English
Subjects:
Absorption spectroscopy
CARBON BASE MATERIALS
COATING
COMPOSITES
COPPER PHTHALOCYANINE
ELECTRICAL CONDUCTIVITY
Liquid crystals
Microscopy
Orientation
Polarization
Single wall carbon nanotubes
Spin coating
THIN FILMS
TUBE
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Summary:In this study, liquid crystalline copper phthalocyanine and single walled carbon nanotubes were dispersed in solution to prepare novel composites. Thin films of these composites prepared by solving of the composite in dimetylformamide and then by spin coating the solution onto the substrates were studied by the methods of polarizing microscopy, polarized Raman and optical absorption spectroscopies. It was shown that pure CuPcR4 forms the films with a herringbone arrangement of phthalocyanine molecules within adjacent columns. An addition of carbon nanotubes (0.5-2 wt %) to CuPcR4 leads to formation of the films with edge-on orientation of the molecules. The higher conductivity values were found for the films of phthalocyanine containing SWCNT. The lateral conductivity tends to decrease with the increase of SWCNT concentration from 0.5 to 2 wt %.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.531-532.337