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An extensive study is described to identify the most suitable fluorescent label in magnetic microsphere sedimentation arrays. The investigated fluorescent labels, commonly used in multiplex analysis, include organic dyes, (fluorescein, Alexa488, Cy5) fluorescent proteins (R-Phycoerythrin, Allophycocyanine, PBXL-3) polymer nanoparticles (FluoSpheres, PD-Pt) and semiconductor nanocrystals (Quantum dots)...
A new europium(III) chelate is synthesized and characterized. The wavelength of sensitization of Eu3+ luminescence is shifted further into visible so that efficient excitation with 425, 435 and 450-nm LEDs becomes possible. Photophysical properties and temperature dependence of luminescence are investigated in toluene solution and various polymer matrixes. The sensor materials are also characterized...
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