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- Title
Structure-emission relationship of some coumarin laser dyes and related molecules: Prediction of radiative energy dissipation and the intersystem crossing rate constants.
- Authors
ABDEL-MOTTALEB, M. S. A.
- Abstract
Dye lasers are commonly used in optical investigation because their solutions in organic solvents deliver tunable, coherent emissions. They exhibit intense fluorescence owing to some specific spectroscopic characteristics. One drawback of the laser dyes is that it shows excessive triplet-state losses (TSLs.) The lack of theoretical predictions of fluorescence rates, intersystem crossing (ISC), and phosphorescence in laser dyes prompted us to report on the predicted rates of radiative and nonradiative transitions of some laser dyes. Structural engineering by some substituents influencing the simulated rates of coumarin laser dye derivatives for an efficient operation was investigated. The NH2 functional group renders the coumarin 120 more fluorescents with reduced TLS than the other investigated materials. Tailoring new efficient laser dyes can be achieved guided by the calculated rates of emission and nonradiative processes.
- Subjects
RADIATION; COUMARINS; ENERGY dissipation; DYE lasers; PHOSPHORESCENCE spectroscopy; RADIATIVE transitions; STRUCTURAL engineering; PHOSPHORESCENCE
- Publication
Turkish Journal of Chemistry, 2023, Vol 47, Issue 1, p164
- ISSN
1300-0527
- Publication type
Article
- DOI
10.55730/1300-0527.3526