Hybrid Inorganic-Organic Mesoporous
Silicates-Nanoscopic Reactors Coming of Age
by A. Stein, B. J. Melde and R. C. Schroden
Advanced Materials Vol 12, N°19 2000, 1403-1419 |
Mesoporous silicates are a relatively new class of nanotextured materials which can
find applications in a variety of industrial fields. One of the exciting discoveries in
the research area is that all these molecular constructions can be chemically
functionalized to specifically address an application requirement.
Functionalization can
be either internal or external to the structure walls. The authors review a variety of
chemical routes and reactions to chemically modify these materials with a great number of
chemical groups. The second part of this review article is devoted to an updated
description of functionalized mesoporous material applications including optical,
catalytic, environmental, and biological.
Related Links :
Department of Chemistry, Stein's
Research group, Stein's
personal page
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Synthesizing
low-k CVD Materials for Fab Use
By R.K. Laxman, N. H. Hendricks, B. Arkles and T. A. Tabler
Source : Semiconductor International
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Several material options have been suggested in the past including xerogels for low
dielectric constant films for the 0.13 µm micro electronics device fabrication.
Development and process integration of CVD deposited organosilicate glass produced from
trimethyl (3MS) and tetra methyl silanes is underway . The authors present synthesis
routes and proposes a novel production-ready method for handling and delivering the 3MS
tool. (21 ref.)
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Soft processing for advanced inorganic Materials
Special issue of MRS bulletin Vol 25 N°9, 2000
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This special issue of the September MRS bulletin describes recent developments in the
field of soft solution processing.
Guest editors M.Yoshimura professor at the Materials and structures
laboratory,
Tokyo Institute of Technology and Jacques Livage professor at the
"Laboratoire de
Chimie de la Matière Condensée", University of Pierre and Marie Curie.
Six review
articles from leading scientists and researchers covers the various aspects of the soft
chemistry, and materials processing.
- Soft solution processing: A strategy for one step processing of advanced Inorganic
materials by M. Yoshimura, W.L.Suchenek and K. Byrappa
- The synthesis of photocatalysts using the
polymerizable-complex method by M. Kakihana
and K. Domen
- Soft chemical routes to heterostructured High Tc superconducting Materials by J-H.
Choy,
S-J. Kwon, S-J. Hwang and e-S. Jang
- Rectifying self-assembled ultrathin films by
T.P. Cassagneau, B. Sweryda-Krawiec and J.H. Fendler
- Electrochemical and photoelectrochemical processing for oxides films by Y. Matsumoto
- A soft Solution processing technique for preparing ferrite films and their applications
by M. Abe
Luminescence
properties of erbium-doped silica sol-gel films
by Lenneke H. Slooff
PhD Thesis November 2000, University of Utrecht, Netherlands |
Er-doped silica films were prepared by spin-coating a solution of
erbium-nitrate, TEOS, ethanol and acidified water on a Si substrate.After annealing at
900°C, room temperature photoluminescence at 1.53 µm is observed with a luminescence
lifetime as long as 10-12 ms, for Er concentrations up to 1.0 at %. The film thickness ar
on the order of 550-750 nm. Water content after annealing is estimated at 1 ppm.
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