Accession Number : AD0759744

Title :   Pyrene Fluorescence in Ethanol and Cyclohexane Under Pressure.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV SANTA BARBARA DEPT OF CHEMISTRY

Personal Author(s) : Johnson,P. C. ; Offen,H. W.

Report Date : APR 1973

Pagination or Media Count : 23

Abstract : The fluorescence of pyrene has been studied as a function of pressure, concentration and temperature in the solvents ethanol and cyclohexane. The spectra and lifetime of both monomeric pyrene and the excited state complex are characterized at different pressures. Compression of ethanol shifts the monomer-excimer equilibrium towards the monomer, while compression of cyclohexane leads to aggregation and pyrene excimer fluorescence over a large concentration range. (Author)

Descriptors :   (*AROMATIC COMPOUNDS, *FLUORESCENCE), ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, ETHANOLS, CYCLOHEXANES, TEMPERATURE, PRESSURE, RELAXATION TIME

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE