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| Author(s): |
Sergio Augusto Venturinelli Jannuzzi
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Instituto de Química |
| Defense date: | 2011-02-12 |
| Examining board members: |
André Luiz Barboza Formiga;
Ana Flávia Nogueira;
Alfredo Tiburcio Nunes Pires
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| Advisor: | Maria Isabel Felisberti; André Luiz Barboza Formiga |
| Abstract | |
This work comprises the synthesis, characterization and application of a hybrid organic-inorganic metallopolymer, in which the organic block is the polymer poly(4-vinylpyridine) and the inorganic block is the complex sodium pentacyanoferrate(II). The first part presents the influence of the polymer on the properties of the complex and vice-versa. The second part illustrates an application of the metallopolymer on the production of Prussian blue (AP) analogs based on the reaction of Fe with the pentacyanoferrate moieties. The metal-to-ligand charge transfer band of the polymer-bound pentacyanoferrate in solution shifts towards lower energies whereas the free monomers fraction arises. It indicates that the organic block fraction tunes the polarity of the pentacyanoferrate chemical environment. On the other side, the increasing fraction of complex bound to the polymer chain increases the metallopolymer solution viscosities. This is an evidence that the pentacyanoferrate expands the macromolecular coil. Prussian blue-type structures synthesized from metallopolymers exhibit enhanced colloidal stability when compared to the polymer-free compounds. They also present intervalence bands at lower energies than those frequentlly reported for this type of inorganic structure. The reason is probably the polymer wrapping of the particles (AU) | |
| FAPESP's process: | 09/11903-6 - Supramolecular strategy for polymer modification with Prussian blue and analogues |
| Grantee: | Sergio Augusto Venturinelli Jannuzzi |
| Support Opportunities: | Scholarships in Brazil - Master |