A Phosphorimeter for Measurements of Triplet Diffusion

A Phosphorimeter for Measurements of Triplet Diffusion

A phosphorimeter is described which is intended to be used for delayed fluorescence measurements in which the excitation light is introduced in a spatially nonhomogeneous manner. The excitation optics produce a reduced image of the space intermittency pattern at a 1 mm layer of the test solution. Th...

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Veröffentlicht in:Chem. Instrum.; (United States) 1975-01, Vol.6 (1), p.37-53
Hauptverfasser: Burkhart, R. D., Kenney, John W.
Format: Artikel
Sprache:eng
Schlagworte:
440300 - Miscellaneous Instruments- (-1989)
ALCOHOLS
ANTHRACENE
AROMATICS
CONDENSED AROMATICS
DIFFUSION
DISPERSIONS
EMISSION SPECTROSCOPY
ETHANOL
FLUORESCENCE SPECTROSCOPY
HYDROCARBONS
HYDROXY COMPOUNDS
MEASURING INSTRUMENTS
MIXTURES
ORGANIC COMPOUNDS
OTHER INSTRUMENTATION
SOLUTIONS
SPECTROSCOPY
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Beschreibung
Zusammenfassung:A phosphorimeter is described which is intended to be used for delayed fluorescence measurements in which the excitation light is introduced in a spatially nonhomogeneous manner. The excitation optics produce a reduced image of the space intermittency pattern at a 1 mm layer of the test solution. The delayed emission is isolated from prompt fluorescence by an adjustable phasing between excitation and emission choppers. Solutions of anthracene and 9, 10-diphenyl anthracene in ethanol both show changes in delayed fluorescence intensity with changing dimensions of the space intermittency pattern. The effects observed are in agreement with theoretical expectations.
ISSN:1073-9149
1525-6030
DOI:10.1080/10739147508543382