Concentration-dependent absorption and emission behaviour of a pyrimidonecarbocyanine dye in hexafluoroisopropanol |
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| Institution: | 1. Laboratory of Innovation in Construction, Eco-design and Seismic Engineering, Faculty of Technology, University of Batna 2, Algeria;2. Department of Mechanic, Faculty of Technology, University of Batna 2, Algeria;3. Laboratory of Structural Mechanics and materials, Faculty of Technology, University of Batna 2, Algeria |
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| Abstract: | Absorption spectra, refractive index dispersions, fluorescence quantum distributions and fluorescence quantum efficiencies of a pyrimidonecarbocyanine dye in hexafluoroisopropanol are measured for various concentrations in the region between 10−5 and 0.3 mol/dm3. The fluorescence quantum distributions and quantum efficiencies are separated into monomeric and dimeric (closely spaced pair) contributions. The fluorescence emission at high concentrations C( > 0.1 mol/dm3) is identified as closely spaced pair fluorescence. The absorption cross sections and the stimulated emission cross sections for the monomers and closely spaced pairs are resolved. |
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