A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Oxidative Inorganic Multi layers for Polypyrrole Film Generation
Tekijät: Salomaki M, Rasanen M, Leiro J, Huti T, Tenho M, Lukkari J, Kankare J
Kustantaja: WILEY-V C H VERLAG GMBH
Julkaisuvuosi: 2010
Journal: Advanced Functional Materials
Tietokannassa oleva lehden nimi: ADVANCED FUNCTIONAL MATERIALS
Lehden akronyymi: ADV FUNCT MATER
Numero sarjassa: 13
Vuosikerta: 20
Numero: 13
Aloitussivu: 2140
Lopetussivu: 2147
Sivujen määrä: 8
ISSN: 1616-301X
DOI: https://doi.org/10.1002/adfm.200902412
Tiivistelmä
A controlled nanoscale fabrication of conducting polymer films sets severe requirements for the preparation method and substrate. A new and versatile approach for producing thin polypyrrole films on a variety of surfaces is presented. Purely inorganic thin films are first prepared from poly(metaphosphate) and tetravalent metal ions using a sequential layer-by-layer technique. Redox-active cerium (IV) polyphosphate multilayer and redox-inactive zirconium(IV) and hafnium(IV) polyphosphate multilayers are prepared. Cerium-based polyphosphate films grow exponentially with the number of layers but multilayers containing zirconium or hafnium exhibit a linear buildup process. All the studied systems produce relatively smooth films with initial bilayer thickness less than 2 nm. The cerium(IV) containing film is redox-active, which is shown by its capability to form a polypyrrole layer on its surface by oxidation of pyrrole monomers in the adjacent aqueous solution. This is a general method to produce thin oxidative films of arbitrary size and form on a wide variety of surfaces.
A controlled nanoscale fabrication of conducting polymer films sets severe requirements for the preparation method and substrate. A new and versatile approach for producing thin polypyrrole films on a variety of surfaces is presented. Purely inorganic thin films are first prepared from poly(metaphosphate) and tetravalent metal ions using a sequential layer-by-layer technique. Redox-active cerium (IV) polyphosphate multilayer and redox-inactive zirconium(IV) and hafnium(IV) polyphosphate multilayers are prepared. Cerium-based polyphosphate films grow exponentially with the number of layers but multilayers containing zirconium or hafnium exhibit a linear buildup process. All the studied systems produce relatively smooth films with initial bilayer thickness less than 2 nm. The cerium(IV) containing film is redox-active, which is shown by its capability to form a polypyrrole layer on its surface by oxidation of pyrrole monomers in the adjacent aqueous solution. This is a general method to produce thin oxidative films of arbitrary size and form on a wide variety of surfaces.
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