sol-gel processes nano-structured materials are produced systematically
or structured by controlled reactions
from the most varied of basic materials (precursors).
materials in sol-gel processes are metal alcoholates,
silanes or salts, which in solutions can react in a targeted manner in
solutions to so-called germs. This can, for example, take place by varying
the ph value or by adding additional solvents. These germs are particles that
consist of just a few molecules.
By means of the targeted change in the process parameters, the germs can
further develop into different functionalized particles or structures. It is
therefore possible to manufacture from identical basic materials (precursors)
different functional structures that differentiate in their physical
properties. By introducing molecular
structures, e.g. With specially adapted charge carrier topology (electronic
stabilization), with suitable chemical fuctionalization (chemical
stabilization) or from steric
stabilization), the particles that are produced can be stabilized in the
solvent and further growth can be controlled. Moreover, in further process
steps supplementary materials (among others, also modified nano particles)
can also be integrated with the already nano-structured
material (sol) in order to enable additional functions and supplementary applications at a later date.