Luminescence instrumentation image

We were fortunate to have oral and poster presentations given by scientists from 19 countries, as well as active participation from industrial exhibitors. The sessions included luciferase-based bioluminescence, photoprotein-based bioluminescence, fundamental aspects and applications of chemiluminescence, luminescence imaging, fluorescence quantum dots and other inorganic fluorescent materials, phosphorescence and ultraweak luminescence, instrumentation and new methods. 

Room-temperature fluorescence (RTF) has been used to determine the emission characteristics of a wide variety of materials relative to the wavelengths of selected Fraunhofer lines in support of the Fraunhofer luminescence detector remote-sensing instrument. RTF techniques are now used in the compilation of excitation-emission-matrix (EEM) fluorescence "signatures" of materials. The spectral data are collected with a Perkin-Elraer MPF-44B Fluorescence Spectrometer interfaced to an Apple 11+ personal computer. EEM fluorescence data can be displayed as 3-D perspective plots, contour plots, or "color-contour" images. The integrated intensity for selected Fraunhofer lines can also be directly extracted from the EEM data rather than being collected with a separate procedure. Fluorescence, chemical, and mineralogical data will be statistically analyzed to determine the probable physical and/or chemical causes of the fluorescence. 

Figure 13.43 In vivo upconversion luminescence imaging of subcutaneous HeLa tumor-bearing athymic nude mice (right hind leg) after intravenous injection of (A) UCNPS-NH2 or (B) UCNPs-FA. All images were acquired under the same instrumental conditions (power density approximately 120 mW cm on the surface of the mouse) [129]. (Reproduced from fiiomafen a/i, 30, L.Q. Xiong ef a/., Synthesis, characterization, and in vivo targeted imaging of amine-functionalized rare-earth up-converting nanophosphors, 5592-5600, 2009, with permission from Elsevier.)...

Figure 2-2 Bioluminescent Salmonella assay workflow. The luminescent histidine-dependent cells are exposed to tested compounds in agar overlay containing only traces of histidine in multiwell-plate format. The reverse-mutation events restore endogenous histidine synthesis resulting in luminescent colonies of histidine-independent cells that can be visualized via CCD camera. The fully automated instrument in conjunction with automated image analysis of plates enables the analysis of 100 plates in one run.

These approaches differ from fluorescence and other luminescent techniques such as phosphofluorescence in that the excitation event is caused by a chemical reaction rather than photolumination. There are a number of reviews that detail the development and applications of luminescent technology (52,53,54,55,56, 57, 58) and instrumentation (59, 60). Particularly outstanding is the recent detailed review by Stanley (61) where more than 90 luminometers (manual, automatic, microtiter plate, HPLC, LC, GLC, imaging, and others) from more than 60 sources are described. 

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