Polypyrrole/polyphosphate organic-inorganic nanocomposites

2019-09-28 18:29:54

samples Organic inorganic stoichiometry polyphosphate

责任者: Castro, Eryza G.;Zarbin, Aldo J.G.;Galembeck, Andre 单位: Departamento de Quimica Fundamental, Universidade Federal de Pernambuco, CEP 50670-901 Recife, PE, Brazil 来源出处: Journal of Non-Crystalline Solids,2005,351(49-51):3704-3708 摘要: Polypyrrole/polyphosphate organic-inorganic nanocomposites were synthesized by a single-step synthesis in which the inorganic host network develops initially from a sol-gel transition and provide a restricted environment for pyrrole polymerization. The organic polymer forms, entrapped within the polyphosphate gel. The samples were characterized by UV-visible-NIR, infrared, Raman and electron paramagnetic resonance spectroscopies and thermogravimetric analysis. Self-standing thick films and powdered samples were obtained by adjusting the pyrrole and oxidant total amounts and their stoichiometric ratio. Self-standing samples in which the organic polymer is dispersed in nanosized domains within the inorganic matrix were prepared with up to a 10.8% polypyrrole load in its oxidized conducting form. © 2005 Elsevier B.V. All rights reserved. 关键词: Nanostructured materials;Organic polymers;Polypyrroles;Sol-gels;Polymerization;Paramagnetic resonance;Stoichiometry;Pyrrole polymerization;Stoichiometry ratio