Solid-surface luminescence analysis. Progress report, 15 June 1989--31 October 1991

Technical Report · Tue Dec 31 04:00:00 EST 1991

DOI:https://doi.org/10.2172/10121418· OSTI ID:10121418

Hurtubise, R J

We have characterized several interactions that are very important in solid-matrix luminescence. With silica gel chromatoplates and filter paper, simple equations were derived for calculating the individual contributions to the percent decrease in luminescence due to either moisture or to a quenching gas. For sodium acetate as a solid matrix and p-aminobenzoate as a model compound, it was concluded that p-aminobenzoate was incorporated into the crystal structure of sodium acetate, and the triplet energy was lost be skeletal vibrations in sodium acetate. Also, with the same system is was shown that p-aminobenzoate did not undergo rotational relaxation, and thus rotational processes did not contribute to the deactivation of the triplet state. Several results were obtained from model compounds adsorbed on filter paper under different temperature and humidity conditions and with a variety of heavy atoms present. Fundamental photophysical equations were used in calculating several basic parameters that revealed information on rate processes and how the absorbed energy was distributed in an adsorbed lumiphor. The most important advancement with filter paper was the development of equations that relate phosphorescence parameters of adsorbed phosphors to the Young`s modulus of filter paper. These equations are based on a fundamental theory that relates the hydrogen-bonding network of paper to the modulus of paper.

• Research Organization: Wyoming Univ., Laramie, WY (United States). Dept. of Chemistry
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-86ER13547
• OSTI ID: 10121418
• Report Number(s): DOE/ER/13547--3; ON: DE92007740
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102
400201
ACETATES
CARBOXYLIC ACID SALTS
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
CHEMICAL AND SPECTRAL PROCEDURES
DEXTRIN
ENERGY-LEVEL TRANSITIONS
FLUORESCENCE
LIQUID COLUMN CHROMATOGRAPHY
LUMINESCENCE
MOISTURE
PAPER
PHOSPHORESCENCE
PROGRESS REPORT
QUENCHING
SILICA