Photochemical Transformations in Bis-Methacrylic Polymers for Liquid Crystal Photoalignment: IR Spectroscopy Studies

Fourier transform infrared spectroscopy (FTIR) is applied to study photochemical transformations in poly(p-methacryloylaminophenyl methacrylate), a material with pronounced liquid crystal photoalignment capability. The characteristic bands corresponding to photosensitive groups of this polymer are i...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2011-02, Vol.536, p.456
Main Authors: Vretik, L, Kyrychenko, V, Smolyakov, G, Yaroshchuk, O, Zagniy, V, Gavrilko, T, Syromyatnikov, V
Format: Article
Language:English
Subjects:
Fluorescence
Fourier transforms
Liquid crystal polymers
Polymers
Spectrum analysis
Studies
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Summary:Fourier transform infrared spectroscopy (FTIR) is applied to study photochemical transformations in poly(p-methacryloylaminophenyl methacrylate), a material with pronounced liquid crystal photoalignment capability. The characteristic bands corresponding to photosensitive groups of this polymer are identified by comparing its FTIR spectra with the spectra of model compounds having a reduced number of photochemical transformations. The changes in FTIR spectra of this material under ultraviolet illumination give evidence of two Fries rearrangements (in arylamide and arylester groups) and a conversion of C=CH... methacrylic bonds. This allows one to refine the microscopic model of photoinduced ordering in this class of polymers. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:1542-1406
1527-1943