Analysis of fluorescence quenching of pyronin B and pyronin Y by molecular oxygen in aqueous solution

Fluorescence quenching of 7-amino-4-methylcoumarin by different TEMPO derivatives

“…This finding may be explained by the fact that sizes of all TEMPO derivatives studied are comparable. Additionally, bimolecular quenching rate constants gathered in Table 1 are of the same order of magnitude as diffusion rate constants obtained for studies performed in water [29,30]. On the basis of these results we can state that it is highly probable that the bimolecular process is diffusion-limited, caused by the increase of rate constants of non-radiative transitions, such as an internal conversion or an intersystem crossing.…”

Why the lowest electronic excitations of rhodamines are overestimated by time‐dependent density functional theory

“…Table lists the solvents and computed lowest excitation energies of RDs by TDDFT method with representative BP86, B3LYP, CAM‐B3LYP, and B2PLYP functionals, as well as ADC(2) and XMC‐QDPT2 methods. We also listed the experimental measured energies extracted from several works . The TDDFT calculated results by other functionals are provided in Supporting Information Table S1.…”

“…We also listed the experimental measured energies extracted from several works. [30,[75][76][77][78][79][80][81] The TDDFT calculated results by other functionals are provided in Supporting Information Table S1. Table 3 lists the results of statistical analysis on the basis of the data shown in Table 2 and Supporting Information Table S1, including mean signed error (MSE), mean absolute error (MAE), root-mean-square deviation (RMS), and linear correlation coefficient (R), as well as the maximal and minimal deviations.…”

Fluorescence quenching of fluorescein by Merocyanine 540 in liposomes

“…The S-V plot shows a linear, which indicates the dynamic quenching process mechanism in which fluorescence quenching occurs as a result of collision between fluorophores and the quencher. In some cases, the experimental results exhibit positive deviation from the linear, which indicates the static quenching, which is due to the ground-state complex formation between fluorophore and a quencher [1]. In addition, dynamic and static quenching can be differentiated regarding their different dependence on temperature.…”

“…Fluorescence quenching is widely applied within the studies in association with biological and medical phenomena [1]. Fluorescence quenching techniques provide information about the internal structure of membranes or lipid characteristics of the membrane, quencher molecules permeability between the surface molecules (lipid-water), and drug distribution in the lipidwater phase.…”