Accession Number : AD0713178

Title :   NANOSECOND TIME RESOLVED EMISSION SPECTROSCOPY OF 1-ANILINO-8-NAPHTHALENE SULFONATE.

Descriptive Note : Technical rept.,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS DEPT OF CHEMISTRY

Personal Author(s) : Ware,William R. ; Chakrabarti,Saroj

Report Date : 28 SEP 1970

Pagination or Media Count : 22

Abstract : Fluorescence lifetimes, steady-state and time-dependent fluorescence spectra of 1-anilino-8-naphthalene sulfonate (ANS) have been measured at several temperatures and in a variety of solvents. The fluorescence of ANS showed a large temperature-dependent spectral shift as well as time dependent spectral shifts in the nanosecond range. The results are interpreted in terms of solvent-excited solute relaxation processes involving the lowest excited singlet state of ANS. It was also found that at least part of the increase in the fluorescence quantum yield with decreasing solvent polarity involves an increase in the radiative transition probability. (Author)

Descriptors :   (*NAPHTHALENES, *FLUORESCENCE), EMISSIVITY, SULFONATES, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, ELECTRON TRANSITIONS, SOLUTIONS(MIXTURES), PROPANOLS, RELAXATION TIME, EXCITATION

Subject Categories : Organic Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE