Distinctly Different Conformations of an Amorphous Polymer with Azobenzene Side Chains in Solid and Solution
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A differential scanning calorimetry of a polymethacrylate with azobenzene side chains at the first heating exhibited a scan different from the subsequent ones. Comparison of absorption spectra in an aqueous dispersion, a cast film and dilute solutions of mixtures of dioxane and isopropyl alcohol revealed that the azobenzene forms J-aggregates in polymer solid resulting in the first heating scan whereas the subsequent heating scans corresponds to a polymer conformation with monomeric side chains.
- Chemistry Letters
Chemistry Letters 36(1), 194-195, 2007-01-05
The Chemical Society of Japan