Energy transfer between rhodamine 3B and oxazine 4 in synthetic-saponite dispersions and films

Spectral properties of TMPyP intercalated in thin films of layered silicates

“…As noted above, polarized UV-vis spectral data support the assumption about the interaction between adsorbed TMPyP cations. Similar properties have been observed for solid silicate films with intercalated dyes of other types [15]. We assume that more promising materials based on dyes and silicates could be prepared from premodified materials with alkylammonium cations [30].…”

“…structural types [13,14]. The occurrence of molecular aggregation is considered to be a serious problem during the preparation of luminescent hybrid materials, based on organic dyes embedded in inorganic solid hosts [15], because it leads to decreasing of the excited state lifetimes of photoactive species.…”

Fluorescence resonance energy transfer between two cationic laser dyes in presence of the series of reduced-charge montmorillonites: Effect of the layer charge

“…The trends in the spectra are different from those observed for Ox4. All spectra are similar, characterized with the main band centered approximately at 570 nm, which is attributed to the monomeric forms of the dye [39]. The main band position moved in a narrow range (568-572 nm) and did not significantly change with the layer charge for fully expandable RCMs.…”

“…The conditions used for energy transfer from R3B to Ox4 were already optimized in our previous study [39]. The optimal concentration was found to be 10 −6 mol dm −3 .…”

Effect of the layer charge on the interaction of porphyrin dyes in layered silicates dispersions

“…As a result, dimers and largersize molecular aggregates of the H-and J-type can be formed. Molecular aggregation is often a crucial problem occurring during the preparation of luminescent hybrid materials based on organic dyes embedded in inorganic solid hosts [14] because aggregation leads to decreasing of the excited state lifetimes. The characteristic feature of H-aggregates is extensive luminescence quenching of originally photoactive compounds.…”