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Chapter 2 Recent Advances in Hybrid Azobenzene-Silica Materials (pp. 29-52) $100.00
Authors:  (Raul-Augustin Mitran, Daniela Berger and Cristian Matei, “Ilie Murgulescu” Institute of Physical- Chemistry, Romanian Academy, Bucharest, Romania, and others)
Abstract:
Reversible photoinduced structural changes in organic molecules
offer an exciting possibility for controlling matter at the nanoscale level.
Azobenzene moieties are widely used in designing photoresponsive
materials due to their large structural changes in the presence of light or
heat. The trans isomer of azobenzene is transformed into the cis isomer
upon UV irradiation, while cis to trans isomerization can be performed
with visible light or heat. Although most of the studies so far are focused
on azobenzene-containing polymeric materials, inorganic-organic hybrid
materials have extra advantages in terms of improved mechanical and
thermal stability. Among the inorganic materials, silica offers numerous
possibilities to create nanostructures and it can easy integrate the organic
azobenzene moieties. In this chapter, we review the recent advances made
in the field of hybrid azobenzene-silica materials, with a focus on
nanomaterials and their applications at the nanoscale level. With regard to
the inorganic component, hybrid materials include silica films,
nanoparticles and mesoporous silica materials. The azobenzenecontaining
hybrid materials are studied for various applications such as
stimuli-responsive drug delivery, selective adsorption and separation,
templates for nanomaterials synthesis, light-operated nanovalves and
theranostic platforms, photoresponsive superhydrophobic surfaces,
detection of small molecules or nanoreactors for controlling chemical
reactions. 


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Chapter 2 Recent Advances in Hybrid Azobenzene-Silica Materials (pp. 29-52)