V. V. Serdobintseva

A new method for building photonic-crystal opal films by stacking monodisperse spherical silica particles into a regular structure in a surfactant medium

A new method for stacking monodisperse spherical silica particles (MSSPs) into single-crystal opal films on a solid flat substrate of lyophilic MSSP suspensions in dimethyl sulfoxide was developed. This method allows high-optical-quality opal films (containing no domains or twins and a minimum number of microcracks) to be built which are higher quality than those obtained by the moving meniscus method. This method is promising for producing films on metal or plastic substrates and for directly building heterostructures.

Structured chemosensor films based on silica nanoparticles modified by organic colorants

Production of chemical and biological sensor film materials based on the structured matrix of silica nanoparticles is an urgent task. Its solution is related to modification of the surface of silica particles by molecules of organic colorants (chromophores) that are functionally active with respect to chemical and biological matters, bonding of which to luminophor changes the opti

Photoluminescence of composition chemosensor films based on structured mesoporous silica and photonic crystal structures

Optical structured composition chemosensor films were obtained based on photonic crystal matrices with monodisperse spherical silica particles (MSSP) 190 to 245 nm in size which were saturated with a nanosol of silica particles modified by fluorescein. As a result, the MSSP surface is covered with nanofilms of mesoporous silica, which provides the photoluminescence (PL) of the material. The photonic crystal structure of the composition film amplifies PL in comparison with a mesoporous reference.