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Journal of Biotechnology and Phytochemistry
Volume 1 Issue 3
Chemistry World 2017
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Page 23
November 13-15, 2017 Athens, Greece
7
th
World Congress on
Chemistry
Light, a powerful tool for the synthesis of metal
nanoparticles and nanocomposites
Lavinia Balan
Institute of Materials Science of Mulhouse - CNRS, France
T
he size dependent properties of noble metal nanoparticles
(MNPs) have created a great promise because of
their use in a variety of optical, electronic and biomedical
applications. Nowadays, a great diversity of techniques
and methods were developed for their synthesis: chemical,
thermal, photochemical or biological. Among them, the
photochemical approach has proven an excellent tool to
synthesize nanoparticles and also nanocomposites materials
as well in the investigation of the mechanistic aspects of
their formation. Moreover, this “green” and “highly flexible”
approach allows a sharp spacial and temporal control of the
chemical reactions. Thus, photochemistry is used to produce
MNPs through the photo reduction of a metal precursor by
transient species arising from the photocleavage of a radical
generator in aqueous solution or directly on a glass surface
in order to produce plasmonic surfaces. Improving the
efficiency of the process and controlling the NPs morphology
require a careful optimization of the photonic and chemical
parameters. This innovative photochemical approach
was also used to design advanced nanomaterials such as
metal/polymer nanocomposites. Hybrid nanocomposites
were obtained by combing the in situ photoreduction
with the photopolymerization of multifunctional acrylate
monomers. In such systems, specific interactions between
the macromolecular network and nascent particles was
found to control the access of metal atoms to the different
crystalline planes of the growing particles, which is necessary
to obtain anisotropic nanoobjects. The ultimate step of
this photochemical approach is concerned with the spatial
assembling of MNPs in the polymer matrix. Thus, controlling
both the synthesis and multi-scale organization (nano,
micro and macro) of such cross-linked organic-inorganic
nanomaterials opens promising prospects in the field of
advanced materials.
Biography
Lavinia Balan obtained her PhD degree from the University Henry Poincaré in
Nancy, France, in 2005. Her PhD was devoted to the elaboration of an original
material for the anode of Li-ion batteries. Since 2006, she is a CNRS Senior
Researcher. Her lines of research are concerned with photo chemical synthesis
and design of metal nanoparticles and metal/polymer nanocomposites for
advanced applications. She holds five patents, published more than 90 papers
in reputed journals and is a member of 10 editorial boards of journals in the field
of nanomaterials and nanotechnology.
lavinia.balan@uha.frLavinia Balan, J Biotech and Phyto 2017