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1998 | 94 | 5-6 | 825-834
Article title

Effects of Order on Spectral Properties of Discotic Liquid Crystal Heptyloxydibenzopyrene

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Content
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Languages of publication
EN
Abstracts
EN
The spectral properties of discotic heptyloxydibenzopyrene were studied by UV-VIS absorption, fluorescence, and infrared spectroscopy as a function of temperature in two different types of spectroscopic cells. The molecule was found to be a sensitive spectroscopic probe of molecular orientation on a surface. Capillary-filled cells caused the liquid crystal to assume a parallel orientation with respect to the surface, whereas spin-coating caused the orientation of columns to be statistically more nonuniform. It was shown from the spectroscopic studies that the molecular orientation changed on going from crystal to liquid crystalline state and a conclusion was drawn that bulk molecular alignment of columnar phase was defined by an interface imposed by an external surface.
Keywords
EN
Publisher

Year
Volume
94
Issue
5-6
Pages
825-834
Physical description
Dates
published
1998-11
received
1998-07-23
(unknown)
1998-10-01
Contributors
author
  • Centre of Molecular and Macromolecular Studies of Polish Academy of Sciences, Sienkiewicza 112, 90363 Łódź, Poland
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv94z512kz
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