E. Tourasanidis, G. Karayannidis
Aug 23, 1999
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Influential Citations
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Journal
Journal of Macromolecular Science, Part A
Abstract
4-(4 ′-Nitrophenylazo)-1-naphthol, a commercial azo-dye, was used as a side chain moiety for the preparation of six members of a new series of polymethacrylates, the poly(ω-[4-(4 ′-nitrophenylazo)-naphthalene-1-yloxy]alkyl methacrylate)s with 2, 4, 5, 6, 10, and 11 methylene units as spacer. A two-step synthesis gave the corresponding monomeric methacrylates, which were polymerized by a free radical polymerization using AIBN as initiator. The above polymethacrylates did not show any liquid crystallinity, however a side chain crystallization was observed for the last member of the polymer series. The UV/Vis spectroscopy showed that all polymers retained the optical properties of the azo-dye with a small hypsichromic shift and a decrease in intensity when moving from monomer to polymer. A copolymer of 6-methylene spacer monomeric ester with methyl methacrylate was also prepared, in order to study how copolymerization affected the properties of the corresponding homopolymer.