Search results for "Absorption and fluorescence spectroscopies"

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Sensitization of nanocrystalline TiO2 with 3,4,9,10-perylene tetracarboxylic acid

2014

Optical properties of 3,4,9,10-perylene tetracarboxylic acid (PTCA) in the presence of nanocrystalline TiO2 (nominal diameter 15 nm) have been investigated in ethanol solution and in the solid state by UV-Vis absorption spectroscopy and steady-state and time-resolved fluorescence. Experimental results show that, in ethanol, the presence of TiO2 nanoparticles causes significant changes in the typical absorption and fluorescence bands of PTCA and in the fluorescence relaxation time. Similar effects are also detected in solid samples, obtained by electrospray deposition technique. The nonlinear optical properties of the PTCA-TiO2 in ethanol solutions were investigated using the single-beam Z-s…

ElectrosprayMaterials scienceAbsorption spectroscopyAnalytical chemistryBioengineeringchemistry.chemical_compoundGeneral Materials ScienceTitania nanoparticles Dye sensitization Absorption and fluorescence spectroscopies Optical limiting Z-scan methodDeposition (law)Settore CHIM/02 - Chimica FisicaZ-scan methodTitania nanoparticles; Dye sensitization; Absorption and fluorescence spectroscopies; Optical limiting; Z-scan methodDye sensitizationGeneral ChemistryCondensed Matter PhysicsFluorescenceAtomic and Molecular Physics and OpticsNanocrystalline materialchemistryModeling and SimulationAbsorption (chemistry)Optical limitingLuminescenceTitania nanoparticlesPeryleneAbsorption and fluorescence spectroscopiesJournal of Nanoparticle Research
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