Phosphorescence and orbital nature of triplet state of xanthene dyes

1977 ◽  
Vol 26 (6) ◽  
pp. 735-739 ◽  
Author(s):  
N. I. Kunavin ◽  
R. N. Nurmukhametov ◽  
G. T. Khachaturova
Keyword(s):  
Triplet State ◽  
Xanthene Dyes ◽  
Orbital Nature

Triplet state quantum yields for some arom atic hydrocarbons and xanthene dyes in dilute solution

1967 ◽  
Vol 299 (1458) ◽  
pp. 348-353 ◽  
Keyword(s):  
Triplet State ◽  
State Formation ◽  
Heavy Atom ◽  
Quantum Yields ◽  
Triplet States ◽  
Dilute Solution ◽  
Perturbation Techniques ◽  
Excited Singlet ◽  
Xanthene Dyes ◽  
Extinction Coefficients

Quantum yields of triplet state formation and extinction coefficients of the triplet states have been determined by direct depletion methods for solutions of anthracene, phenanthrene, 1,2,5,6-dibenzanthracene, fluorescein, dibromofluorescein, eosin and erythrosin. The values obtained for the hydrocarbons are in reasonable agreement with those obtained by other workers using energy transfer and heavy atom perturbation techniques. In all cases which we have studied, the sum of the quantum yields of fluorescence and triplet state formation is equal to unity within the limits of experimental error, showing that radiationless transfer from the excited singlet to the ground state is negligible.

Mechanism for triplet-state concentration quenching in xanthene dyes

1986 ◽  
Vol 44 (3) ◽  
pp. 232-235 ◽  
Author(s):  
K. T. Ermaganbetov ◽  
G. A. Ketsle ◽  
Z. M. Muldakhmetov ◽  
L. V. Chirkova
Keyword(s):  
Triplet State ◽  
Concentration Quenching ◽  
Xanthene Dyes ◽  
State Concentration

A nitroreductase-activatable near-infrared theranostic photosensitizer for photodynamic therapy under mild hypoxia

2020 ◽  
Vol 56 (43) ◽  
pp. 5819-5822
Author(s):  
Jing Zheng ◽  
Yongzhuo Liu ◽  
Fengling Song ◽  
Long Jiao ◽  
Yingnan Wu ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Triplet State ◽  
Near Infrared ◽  
Mild Hypoxia

In this study, a near-infrared (NIR) theranostic photosensitizer was developed based on a heptamethine aminocyanine dye with a long-lived triplet state.

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