Abstract
Spectral and kinetic features of rhodamine 6G fluorescence quenching in a heterogeneous system of macroporous silica (silokhrom, S-80) and water caused by the combined influence of an external heavy atom (KI) and resonance-excited surface plasmons on citrate hydrosol silver nanoparticles. Surface plasmon quenching occurred through donor–acceptor interaction in complexes with iodide and silver nanoparticles. The activation energy of dye fluorescence quenching in the heterogeneous system had a minimum that was associated with hindered diffusion during the formation of silver-nanoparticle clusters.
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