Accession Number : ADA136358

Title :   Solvent Effects on Emission Yield and Lifetime for Coumarin Laser Dyes. Requirements for a Rotatory Decay Mechanism.

Descriptive Note : Technical rept. 1 Jan 82-31 Oct 82,

Corporate Author : BOSTON UNIV MA DEPT OF CHEMISTRY

Personal Author(s) : Jones,G , II ; Jackson,W R ; Choi,C ; Bergmark,W R

PDF Url : ADA136358

Report Date : 31 Oct 1983

Pagination or Media Count : 39

Abstract : Photophysical parameters have been determined for coumarin laser dyes in organic solvents and water. Fluorescence yields and lifetimes were sensitive to solvent polarity depending on subtle features of dye structure. Protic solvents were important in reducing emission yield for certain dyes. Radiative and non-radiative rates were obtained and trends analyzed in terms of dye structure, solvent properties, and medium temperature.

Descriptors :   *Dye lasers, *Coumarins, *Organic solvents, *Emission spectra, Dyes, Fluorescence, Water soluble materials, Photochemical reactions, Physical properties, Charge transfer

Subject Categories : Radiation and Nuclear Chemistry
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE