PMID- 15502838
OWN - NLM
STAT- MEDLINE
DCOM- 20041119
LR  - 20061115
IS  - 1476-1122 (Print)
IS  - 1476-1122 (Linking)
VI  - 3
IP  - 11
DP  - 2004 Nov
TI  - Periodically ordered nanoscale islands and mesoporous films composed of 
      nanocrystalline multimetallic oxides.
PG  - 787-92
AB  - Innovative strategies to produce well-defined nanoparticles and other 
      nanostructures such as nanofibres, quantum wells and mesoporous materials have 
      revitalized materials science for the potential benefit to society. Here, we 
      report a controlled process, involving soft-chemistry-based deposition, 
      template-assisted mesostructured growth, and tuned annealing conditions that 
      allows the preparation of ordered mesoporous crystalline networks and 
      mesostructured nano-island single layers, composed of multicationic metal oxides 
      having perovskite, tetragonal or ilmenite structures. This strategy to obtain 
      meso-organized multi-metal-oxide nanocrystalline films (M(3)NF) bridges the gap 
      between conventional mesoporous materials and the remarkable properties of 
      crystalline ternary or quaternary metallic oxides. Nanocrystalline mesoporous 
      films with controlled wall thickness (10-20 nm) of dielectric SrTiO(3), 
      photoactive MgTa(2)O(6) or ferromagnetic semi-conducting Co(x)Ti(1-x)O(2-x) were 
      prepared by evaporation-induced self-assembly (EISA) using a specially designed 
      non-ionic block-copolymer template. A tuned thermal treatment of the mesoporous 
      films permits the transfer of the wall structure into nanocrystallites, with all 
      tectonic units being tightly incorporated into mechanically stable ordered tri- 
      or bidimensional nanocrystalline networks. This methodology should allow 
      multifunctionalization, miniaturization and integration during development of 
      devices such as smart sensors and actuators, better-performing photocatalysts, 
      and fast electrochromic devices. On the other hand, organized arrays of dispersed 
      ferromagnetic or ferroelectric nanoparticles are promising materials for 
      spintronics and for cheap, non-volatile 'flash' memories.
FAU - Grosso, David
AU  - Grosso D
AD  - Chimie de la Matiere Condensee, UMR UPMC-CNRS 7574, 4 place Jussieu, 75252 Paris 
      05, France.
FAU - Boissiere, Cedric
AU  - Boissiere C
FAU - Smarsly, Bernd
AU  - Smarsly B
FAU - Brezesinski, Torsten
AU  - Brezesinski T
FAU - Pinna, Nicola
AU  - Pinna N
FAU - Albouy, Pierre A
AU  - Albouy PA
FAU - Amenitsch, Heinz
AU  - Amenitsch H
FAU - Antonietti, Markus
AU  - Antonietti M
FAU - Sanchez, Clement
AU  - Sanchez C
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20041024
PL  - England
TA  - Nat Mater
JT  - Nature materials
JID - 101155473
RN  - 0 (Oxides)
SB  - IM
MH  - Crystallization
MH  - Microscopy, Electron
MH  - Nanotechnology
MH  - Oxides/*chemistry
EDAT- 2004/10/27 09:00
MHDA- 2004/12/16 09:00
CRDT- 2004/10/27 09:00
PHST- 2004/05/11 00:00 [received]
PHST- 2004/07/20 00:00 [accepted]
PHST- 2004/10/27 09:00 [pubmed]
PHST- 2004/12/16 09:00 [medline]
PHST- 2004/10/27 09:00 [entrez]
AID - nmat1206 [pii]
AID - 10.1038/nmat1206 [doi]
PST - ppublish
SO  - Nat Mater. 2004 Nov;3(11):787-92. doi: 10.1038/nmat1206. Epub 2004 Oct 24.