Solvent effects on emission yield and lifetime for coumarin laser dyes. Requirements for a rotatory decay mechanism
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.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1983
- Bibcode:
- 1983STIN...8418629J
- Keywords:
-
- Dye Lasers;
- Dyes;
- Fluorescence;
- Organic Materials;
- Photochemical Reactions;
- Solvents;
- Charge Transfer;
- Emission Spectra;
- Life (Durability);
- Physical Properties;
- Temperature Effects;
- Lasers and Masers