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Effect of Host Medium on the Fluorescence Emission Intensity of Rhodamine B in Liquid and Solid Phase

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Abstract

In this work, we study the effect of concentration, host medium, PH and phase states on the fluorescence emission from the laser dye Rhodamine B pumped by UV laser as exited source. The polymethylmethacrylate PMMA is used as a host medium in case of solid phase samples while, ethanol and Tetrahydrofuran (THF) are used in case of a liquid one. Laser Induced Fluorescence (LIF) technique was used to study the fluorescence properties of both cases of liquid and thin film solid-state samples. In addition, the Dual Thermal Lens (DTL) technique was used to study the quantum yield of these samples. The concentrations of Rhodamine B in ethanol as solvent between 2 × 10−2 M and 5 × 10−6 M were studied. The maximum fluorescence emission is observed at concentration of Rhodamine B C = 3 × 10−4 M. Comparison studies were investigated for different host medium such as ethanol, THF, PMMA in liquid phase state and PMMA in solid phase state. The measurements revealed that, the behavior of both phases state was analogous. Rhodamine B/PMMA thin film sample by ratio of 4:1 and thickness 0.12 mm was found to have the best photostability sample with a quantum yield about ≈0.82.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Cairo University, Giza, Egypt

    M. Fikry, M. M. Omar & Lotfi Z. Ismail

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  1. M. Fikry
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  2. M. M. Omar
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  3. Lotfi Z. Ismail
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Correspondence to M. M. Omar.

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Fikry, M., Omar, M.M. & Ismail, L.Z. Effect of Host Medium on the Fluorescence Emission Intensity of Rhodamine B in Liquid and Solid Phase. J Fluoresc 19, 741–746 (2009). https://doi.org/10.1007/s10895-009-0470-2

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  • DOI: https://doi.org/10.1007/s10895-009-0470-2

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