Growth of ordered silver nanoparticles in silica film mesostructured with a triblock copolymer PEO-PPO-PEO

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.01.044· OSTI ID:21370471

Bois, L ^[1]; Chassagneux, F; Parola, S ^[1]; Bessueille, F ^[2]; Battie, Y; Destouches, N; Boukenter, A ^[3]; Moncoffre, N ^[4]; Toulhoat, N ^[4]

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1. Laboratoire Multimateriaux et Interfaces, UMR CNRS 5615, Bat Berthollet, Universite Claude Bernard Lyon 1, 43 Bd 11 nov 1918, 69622 Villeurbanne (France)
2. Laboratoire des Sciences Analytiques, UMR CNRS 5180, Bat Raulin, Universite Claude Bernard Lyon 1, 43 Bd 11 nov 1918, 69622 Villeurbanne (France)
3. Laboratoire Hubert Curien, UMR 5516 - Universite Jean Monnet, 18 Rue Prof. B. Lauras, Bat F, F-42000 Saint-Etienne (France)
4. Universite Lyon 1, IPNL, CNRS/IN2P3, 4 rue E. Fermi, 69622 Villeurbanne cedex (France)

Elaboration of mesostructured silica films with a triblock copolymer polyethylene oxide-polypropylene oxide-polyethylene oxide, (PEO-PPO-PEO) and controlled growth of silver nanoparticles in the mesostructure are described. The films are characterized using UV-visible optical absorption spectroscopy, TEM, AFM, SEM, X-ray diffraction (XRD) and Rutherford backscattering spectrometry (RBS). Organized arrays of spherical silver nanoparticles with diameter between 5 and 8 nm have been obtained by NaBH{sub 4} reduction. The size and the repartition of silver nanoparticles are controlled by the film mesostructure. The localization of silver nanoparticles exclusively in the upper-side part of the silica-block copolymer film is evidenced by RBS experiment. On the other hand, by using a thermal method, 40 nm long silver sticks can be obtained, by diffusion and coalescence of spherical particles in the silica-block copolymer layer. In this case, migration of silver particles toward the glass substrate-film interface is shown by the RBS experiment. - Graphical abstract: Growth of silver nanoparticles in a mesostructured block copolymer F127-silica film is performed either by a chemical route involving NaBH{sub 4} reduction or by a thermal method. An array of spherical silver nanoparticles with 10 nm diameter on the upper-side of the mesostructured film or silver sticks long of 40 nm with a preferential orientation are obtained according to the method used. a: TEM image of the Fag5SiNB sample illustrating the silver nanoparticles array obtained by the chemical process; b: HR-TEM image of the Fag20Sid2 sample illustrating the silver nanosticks obtained by the thermal process.

• OSTI ID: 21370471
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 7 Vol. 182; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALCOHOLS
ATOMIC FORCE MICROSCOPY
COHERENT SCATTERING
COPOLYMERS
CRYSTAL GROWTH
DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
GLYCOLS
HYDROXY COMPOUNDS
METALS
MICROSCOPY
MINERALS
NANOSTRUCTURES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDE MINERALS
POLYETHYLENE GLYCOLS
POLYMERS
POLYOLEFINS
POLYPROPYLENE
RUTHERFORD BACKSCATTERING SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SCATTERING
SILICA
SILVER
SPECTROSCOPY
TRANSITION ELEMENTS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION