Turkish Journal of Chemistry
DOI
10.55730/1300-0527.3526
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 NH$_{2}$ 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.
Keywords
Fluorescence, intersystem crossing, phosphorescence, lifetime, triplet-state loss
First Page
164
Last Page
170
Recommended Citation
ABDELMOTTALEB, MSA
(2023)
"Structure-emission relationship of some coumarin laser dyes and related molecules: Prediction of radiative energy dissipation and the intersystem crossing rate constants,"
Turkish Journal of Chemistry: Vol. 47:
No.
1, Article 17.
https://doi.org/10.55730/1300-0527.3526
Available at:
https://journals.tubitak.gov.tr/chem/vol47/iss1/17
