Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.3103/S1062873822100215
Аннотация: Abstract: Calibration curves for determining the constant of fluorescein equilibrium in the excited state were obtained by decomposing the emission spectrum into separate dianion and anion contours. It is shown that the photoinduced proton transfer at the step of dianion‒anion dissociation competes with radiative processes, and itsПоказать полностьюefficiency increases with the concentration of phosphate ions acting as proton acceptors. The change in apparent dissociation constant ΔpKapp2 during photoexcitation into the absorption band of the fluorescein dianion (488 nm) was found to be close to limit value ΔpKa = −0.71 determined according to the Förster cycle. © 2022, Allerton Press, Inc.
Журнал: Bulletin of the Russian Academy of Sciences: Physics
Выпуск журнала: Vol. 86, Is. 10
Номера страниц: 1203-1206
ISSN журнала: 10628738
Издатель: Pleiades Publishing