Diacetylene-Containing Polymers XIV:
Poly(octa-3,5-diynylene-1,8-dicarboxyalates) containing some
polar azo dyes |
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Authors: | Susana Hernandez Erika A Castillo Takeshi Ogawa |
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Affiliation: | (1) Present address: Facultad de Química, Universidad Autonoma del Estado de Mexico, Toluca, Mexico;(2) Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de México, 70-360, Ciudad Universitaria, México DF 045 10, Mexico |
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Abstract: | Abstract A series of novel polymers having polar azo dyes were
synthesized and characterized. Although their chromophore
contents are very high, their second order nonlinear (2-NLO)
response was very poor. The poor 2-NLO responses are thought to
be due to poor orientation because of their improper main chain
conformations, as well as their low glass transition
temperatures. They undergo slow cross-linking on standing at
room temperature, and rapidly on heating at temperalures above
150°C, through the diacetylene units of the main chains.
Nevertheless, these polymers are interesting materials as
azo-polymers because of their very high concentration of azo
dyes, which are distributed homogeneously in the polymers.
Synthesis and characterization are described, and the most
important factor for the 2-NLO polymers is discussed. |
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Keywords: | |
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