Model systems for chlorophyll photochemistry: retention of fluorescence at high chlorophyll density at a hydrophobic-hydrophilic interface

Journal Article · Sat Jan 01 04:00:00 EST 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100226a001· OSTI ID:5584102

Seely, G R; Senthilathipan, V

Many model systems containing chlorophyll show concentration quenching of fluorescence at quite moderate occupancies of the available phase space. A new kind of model system has been introduced, involving adsorption of chlorophyll and certain other amphiphilic substances to particles of polyethylene swollen with hydrocarbons, in which fluorescence is retained at coverages approaching a monolayer. In the example illustrated, the fluorescence lifetime is undiminished in spite of evidence for the presence of associated chlorophyll species along with the monomer. The preservation of fluorescence is probably owing to a combination of high viscosity in the swollen polyethylene phase and the presence of a surfactant to keep the chlorophyll in monomeric and well-defined associated forms.

• Research Organization: Charles F. Kettering Research Lab., Yellow Springs, OH
• DOE Contract Number: FG01-80ER10563; AC02-82ER12039
• OSTI ID: 5584102
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 87:3; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
ABSORPTION SPECTROSCOPY
AMIDES
CARBOXYLIC ACIDS
CHEMISTRY
CHLOROPHYLL
COLLOIDS
DATA
DE-EXCITATION
DISPERSIONS
EMISSION SPECTROSCOPY
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
FLUORESCENCE
FLUORESCENCE SPECTROSCOPY
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
LOW TEMPERATURE
LUMINESCENCE
MEDIUM TEMPERATURE
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PHOTOCHEMISTRY
PHYTOCHROMES
PIGMENTS
POLYENES
POLYETHYLENES
POLYMERS
POLYOLEFINS
PORPHYRINS
PYRIDYL RADICALS
RADIATIONLESS DECAY
RADICALS
SORPTIVE PROPERTIES
SPECTROSCOPY
SQUALENE
SURFACE PROPERTIES
TERPENES
TETRADECANOIC ACID