Dynamic and solid-matrix quenching by moisture in solid-matrix phosphrorescence with filter paper

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Applied Spectroscopy; (United States)

DOI:https://doi.org/10.1366/0003702944027435· OSTI ID:6736990

Chen, J; Tjioe, S W; Hurtubise, R J ^[1]

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1. Department of Chemistry, University of Wyoming, Larmie, Wyoming 82071 (United States)

The room-temperature solid-matrix phosphorescence intensity ratios behaved very differently than the pphosphorescence lifetime ratios for 4-phenylphenol, protonated benzo([ital f]) quionline, and two tetrols absorbed on filter paper over a wide range of wt% adsorbed moisture. The changes in phosphorescence intensity ratios and lifetime ratios were related to regions before the monolayer coverage of water and beyond monolayer coverage of water on filter paper. An equation was obtained that describes the changes in the phosphorescence intensity ratio as a function of phosphorescence lifetime ratio and an exponential expression that included the wt% of adsorbed moisture. This equation defined both dynamic and solid-matrix quenching of phosphorescence by adsorbed moisture. The changes in the phosphgorescence lifetime ratios were readily related to Wt% adsorbed moisture by the use of a dynamic quenching model.

• DOE Contract Number: FG02-86ER13547
• OSTI ID: 6736990
• Journal Information: Applied Spectroscopy; (United States), Journal Name: Applied Spectroscopy; (United States) Vol. 48:10; ISSN 0003-7028; ISSN APSPA4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606 -- Other Materials-- Physical Properties-- (1992-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200* -- Inorganic
Organic
& Physical Chemistry
ADSORPTION ISOTHERMS
AROMATICS
BENZOQUINONES
HUMIDITY
HYDROXY COMPOUNDS
ISOTHERMS
LIFETIME
LUMINESCENCE
MOISTURE
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHENOLS
PHOSPHORESCENCE
QUENCHING
QUINONES