Spectroscopic Manifestation of Dye Pair Interactions at High Concentrations in structurally organized SiO2 Films - Physics > OpticsReport as inadecuate




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Abstract: Concentration spectral manifestation of the ionic and neutral dyesencapsulated in mesoporous silicate films was studied. The mesoporous dyed SiO2film was prepared by sol-gel technology with use as surfactant the amphiphilicthree-bloc copolymer Pluronic P123. It was discovered when dye concentrationexceeds mesoporous one the new spectral bands appear that are distinct from theinitial monomolecular predecessors. To explain the phenomena guess isformulated and proved that origin of new spectrums is obliged to formation ofthe ionic pairs, excimers and excitons with participation of dye moleculeslocalized in the characteristic places of mesoporous silicate film. Key terms:mesoporous silicate film, polymer micelles, dye fluorescence, excimers, ionicpair



Author: E.A.Tikhonov Physical institute NAS Ukraine, Kiev, job: 38 044 5250592, a fax: 38 044 5251589, E-mail: etikh@iop.kiev.ua G.M.Telb

Source: https://arxiv.org/




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