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Home  >  Journal list  >  Polymer Journal  >  Vol.37  No.10 (2005)  >  pp.776-781

Polymer Journal
<<Previous article Vol.37  No.10 (2005)   pp.776 - 781 Next article>>

Molecular Size Effects of Diarylnitrone Additive on the Refractive-Index Change in Poly(methyl methacrylate) Film

Kenta Tanaka1), Mariko Fukuda2), Tetsutaro Igarashi2) and Tadamitsu Sakurai2)
1) High-Tech Research Center, Kanagawa University
2) Department of Applied Chemistry, Faculty of Engineering, Kanagawa University


ABSTRACT:  Through a UV spectral analysis of the photorearrangement reactions in hydroxy- and methoxy-substituted diarylnitrones, it was found that the maximum wavelength of the first absorption band in these nitrone derivatives solubilized into poly(methyl methacrylate) film can be used as a measure of the refractive-index change which is directly related to the change in linear polarizability. It was also found that steric bulkiness of the alkyl substituent attached at the para-position on the N-aryl benzene ring contributes to the magnitude of refractive-index change to only a negligible extent.


Keyword:
Diarylnitrones/ Photochemistry/ Refractive Index/ Polymer Film/ Molecular Size

Published online: October 08, 2005
© Copyright, 2005 by The Society of Polymer Science, Japan

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