Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 213, Issue 14, Pages 1457-1464Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201200152
Keywords
controlled morphology; interfacial synthesis; polyanthranilic acid; self doped conducting polymer
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For the first time, the formation of hollow microspheres of the carboxyl functionalized self-doped conducting polymer polyanthranilic acid (PANA), based on a two phase oxidative polymerization technique using two immiscible solvents, is reported. The spherical morphology of the functionalized polymer is obtained using mild acid and chloroform as immiscible solvents. The polymer is further investigated using FT-IR, UV-vis, electrochemical, TGA and X-ray diffraction techniques and is compared with polyanthranilic acid formed using a one phase polymerization method. Unlike the amorphous, one phase synthesized polymer with a granular morphology, two phase polymerization provides a controlled hollow spherical morphology with higher thermal stability and crystallinity. The hollow nature of the sphere is further proven with TEM and controlled opening of the sphere by varying the pH above 7.
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