Excimer formation in pyrene labeled hydroxypropyl cellulose in water: picosecond fluorescence studies

Journal Article · Thu Jul 30 00:00:00 EDT 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100300a001· OSTI ID:6189559

Yamazaki, I; Winnik, F M; Winnik, M A; Tazuke, S

Excimer formation of pyrene chromophores in an aqueous solution of hydroxypropyl cellulose has been studied with a picosecond time-resolved fluorescence spctrophotometer. The time-resolved spectra show two types of broad structureless fluorescence bands at (1) 420 nm in a short time region (0-7 ns) and (2) 470 nm in the time region after 50 ns. The latter is the well-known sandwich-type pyrene excimer, and the other is assumed to be a one-center-type excimer similar to those observed in several other molecular assemblies such as LB films, vapor-deposited films, and single crystals. This is the first report on the detection of such excimers in a dilute polymer solution.

• Research Organization: Institute for Molecular Science, Okazaki, Japan
• OSTI ID: 6189559
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:16; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ABSORPTION SPECTROSCOPY
AROMATICS
CARBOHYDRATES
CELLULOSE
CHEMISTRY
CONDENSED AROMATICS
DATA
DISPERSIONS
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FLUORESCENCE
FLUORESCENCE SPECTROSCOPY
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LABELLING
LUMINESCENCE
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PHOTOCHEMISTRY
POLYMERS
POLYSACCHARIDES
PYRENE
SACCHARIDES
SOLUTIONS
SPECTROSCOPY
WATER