Spectral narrowing in a rhodamine-doped layered TiO2/surfactant thin film

Abstract

Observation of directed emission and spectral narrowing on Xe(L) hollow atom single-(2p) and (2s2p) double vacancy inner-shell transitions at 2.8-2.9 angstroms AIP Conf.

Dye-Sensitized Photoelectrochemical Cell Using a Nanocomposite SiO2/Poly(Ethylene Glycol) Thin Film as Electrolyte Support. Characterization by Time-Resolved Luminescence and Conductivity Measurements

“…It is obviously due to the mesoporous structure of the film. Indeed, AFM and SEM images of the films prepared by the above method and published in previous publications [16][17][18][19] reveal a mesoporous structure that consists of TiO 2 nanoparticles of practically monodispersed size with exceptional reproducibility. The size of the nanoparticles can be easily controlled by choosing the water/surfactant ratio in the original reverse micellar solution.…”

Molecular Orientation of Rhodamine Dyes on Surfaces of Layered Silicates

“…Both films and colloids of rhodamine (R) dyes embedded and adsorbed on a solid substrate have been investigated, for example, R dyes absorbed in organic polymers 2 and silicas, adsorbed on the surfaces of glass, intercalated in layered inorganic hosts, and adsorbed in the cavities of molecular sieves . R molecules form aggregates at the solid/liquid interface, which is generally controlled by the concentration of the dye and properties of both the substrate , and dyes .…”

Molecular arrangement of rhodamine 6G cations in the films of layered silicates: the effect of the layer charge

“…The interactions of rhodamine dyes with various surfaces have been extensively investigated. One could mention rhodamines adsorbed in organic polymers, 1 on surfaces of glass, 2 quartz, 3 in silicas 4,5 and silica gels, 6 and intercalated in layered inorganic compounds 7 and molecular sieves. 8,9 Dyes such as rhodamines form supramolecular assemblies (molecular aggregates) on solid surfaces 10 in a similar manner as in concentrated solutions.…”