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Abstract:

Expanding mesopore size beyond a 10 nm diameter is a big challenge for developing applications based on mesostructured-mesoporous thin films, especially in nanobiotechnology. This triggers the need of new multipore materials produced by reproducible soft chemistry routes. We present here a novel and simple one-pot synthesis method that allows the creation of a new kind of hierarchically porous thin film using a combination of supramolecular templating and phase separation. Accurate tuning of pore size distribution (bimodal, with small mesopores 13-18 nm diameter, and large pores 20-150 nm diameter) is attained by controlling the solubility of a pore enhancement agent, poly (propylene glycol), in the presence of a co-solvent. The reported strategy permits the in situ tuning of the processes that govern the pore generation at different length scales; this opens a path for fabrication of multimodal mesoporous films, which represents an important breakthrough in the field. © 2009 American Chemical Society.

Registro:

Documento: Artículo
Título:One-pot route to produce hierarchically porous titania thin films by controlled self-assembly, swelling, and phase separation
Autor:Malfatti, L.; Bellino, M.G.; Innocenzi, P.; Soler-Illia, G.J.A.A.
Filiación:Laboratorio di Scienza dei Materiali e Nanotecnologie, D.A.P., Università di Sassari, CR-INSTM Palazzo del Pou Salit, Piazza Duomo 6, 07041 Alghero (SS), Italy
Gerencia de Química, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Avenida General Paz 1499 (B1650KNA) San Martín, Provincia de Buenos Aires, Argentina
Centro Interdisciplinario de Nanociencia y Nanotecnología, Avenida Rivadavia 1917, Buenos Aires C1033AAJ, Argentina
DQIAyQF, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, C1428EHA, Buenos Aires, Argentina
CONICET, Avenida Rivadavia 1917, Buenos Aires C1033AAJ, Argentina
Palabras clave:Controlled self-assembly; Cosolvent; Different length scale; In-situ; Large pores; Meso-pores; Mesopore sizes; Mesoporous films; Mesoporous thin films; Mesostructured; Multi-modal; One pot; One-pot synthesis; Poly(propylene glycol); Porous thin films; Porous titania; Soft chemistry routes; Supramolecular templating; Ethylene glycol; Phase modulation; Pore size; Propylene; Thin films; Titanium dioxide; Titanium oxides; Tuning; Phase separation
Año:2009
Volumen:21
Número:13
Página de inicio:2763
Página de fin:2769
DOI: http://dx.doi.org/10.1021/cm900289c
Título revista:Chemistry of Materials
Título revista abreviado:Chem. Mater.
ISSN:08974756
CODEN:CMATE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08974756_v21_n13_p2763_Malfatti

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Citas:

---------- APA ----------
Malfatti, L., Bellino, M.G., Innocenzi, P. & Soler-Illia, G.J.A.A. (2009) . One-pot route to produce hierarchically porous titania thin films by controlled self-assembly, swelling, and phase separation. Chemistry of Materials, 21(13), 2763-2769.
http://dx.doi.org/10.1021/cm900289c
---------- CHICAGO ----------
Malfatti, L., Bellino, M.G., Innocenzi, P., Soler-Illia, G.J.A.A. "One-pot route to produce hierarchically porous titania thin films by controlled self-assembly, swelling, and phase separation" . Chemistry of Materials 21, no. 13 (2009) : 2763-2769.
http://dx.doi.org/10.1021/cm900289c
---------- MLA ----------
Malfatti, L., Bellino, M.G., Innocenzi, P., Soler-Illia, G.J.A.A. "One-pot route to produce hierarchically porous titania thin films by controlled self-assembly, swelling, and phase separation" . Chemistry of Materials, vol. 21, no. 13, 2009, pp. 2763-2769.
http://dx.doi.org/10.1021/cm900289c
---------- VANCOUVER ----------
Malfatti, L., Bellino, M.G., Innocenzi, P., Soler-Illia, G.J.A.A. One-pot route to produce hierarchically porous titania thin films by controlled self-assembly, swelling, and phase separation. Chem. Mater. 2009;21(13):2763-2769.
http://dx.doi.org/10.1021/cm900289c