Current projects
Photophysics and Photochemistry of Self-Assembled Nanostructures
Czech Science Foundation P208/10/1678 2010 - 2012.
J.Heyrovský Institute of Physical Chemistry, v.v.i., ASCR, Praha (P. Kubát, coordinator)
Institute of Inorganic Chemistry, v.v.i., ASCR, Řež (K. Lang)
Faculty of Science, Charles University, Praha (J. Mosinger)
Institute of Physical Biology, University of South Bohemia, Nové Hrady (T. Polívka)
The general goal of this project is to construct novel size- and shape-controllable photoactive self-assemblies of high structural integrity and with unique physical a chemical properties. The research includes:
(1) Formulation of new self-assembled nanostructures, design and synthesis of the building blocks.
(2) Solution-phase self-assembly controlled by presence of templates, solvent, pH, temperature, salt concentration, incubation time, and other factors. The formation of various self-assembled structures will be driven by various noncovalent interactions including electrostatic, metal−ligand coordination,p-p interaction, van der Waals, hydrogen bonding, and other type of interaction. The covalent strategy is not in the focus of our studies.
(3) Deposition of self-assembled structures on substrates from solution by drop-casting, spin-coating and Langmuir-Blodgett techniques. Measurement of physicochemical properties, visualization by microscopic method (AFM, TEM, fluorescence microscopy etc.)
(4) Characterization of photoinduced processes both in solution and in the solid state by time–resolved methods covering the time domain extending from femtoseconds to seconds, as well as by steady-state spectroscopic techniques.
Photoactive hybrid materials
Czech Science Foundation P207/10/1447 2010 - 2013
Institute of Inorganic Chemistry, v.v.i., ASCR, Řež (K. Lang, coordinator)J. Heyrovský Institute of Physical Chemistry, v.v.i., ASCR, Praha (P.Kubát)
Hybrid materials designed in this project combine suitable properties of both
inorganic (carrier, protection) and organic (photoactivity, forming) components
so that photoactive compounds can be activated by visible radiation.
Nanostructured hybrid materials are based on layered double hydroxides (LDH) and
layered silicates predominantly in the form of oriented films, self-standing
films, and porphyrin-LDH/polymer films. We intend (i) to develop the methods of
fabrication of hybrid materials with intercalated active molecules, (ii) to
control photofunctions (e.g., energy transfer, singlet oxygen formation), (iii)
to elucidate the role of a matrix structure on the organization, distribution,
orientation and structure of intercalated (active) molecules, and (iv) to
characterize structure - release and structure - photofunction relations. We are
going to develop materials applicable as carriers of active molecules and
materials with controlled photophysical properties, e.g., producing singlet
oxygen upon visible light irradiation that leads to bactericidal surfaces.
Nanofabrics producing singlet oxygen
Faculty of Science, Charles University, Praha (J. Mosinger, coordinator)Institute of Inorganic Chemistry, v.v.i., ASCR, Řež (K. Lang)
J. Heyrovský Institute of Physical Chemistry, v.v.i., ASCR, Praha (P.Kubát)
