Thermal deactivation of the lowest singlet and triplet excited states of acridine dyes in poly(vinyl alcohol) films

Ignacy Gryczynski, Alfons Kawski, Kazimierz Nowaczyk, Henryk Cherek

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Measurements of the mean fluorescence lifetime τF, the lifetimes τDF of the delayed fluorescence, the phosphorescence lifetime τP, the fluorescence quantum yields ØF, and the ratios of the phosphorescence and the delayed fluorescence quantum yields ØP and ØDF respectively, to the fluorescence quantum yield ØF were carried out for three acridine dyes: acridine yellow, acridine orange and proflavine in poly(vinyl alcohol) films as a function of temperature. From these measurements, rate constants were determined for the radiative and radiationless transitions for both the lowest singlet excited state S1 and the triplet state T1. The temperature dependence of the efficiency ØT of the population of the triplet state was also examined.

Original languageEnglish
Pages (from-to)265-272
Number of pages8
JournalJournal of Photochemistry
Volume31
Issue number2-3
DOIs
StatePublished - 1 Jan 1985

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Acridines
Excited states
Coloring Agents
Fluorescence
Alcohols
Quantum yield
Phosphorescence
Proflavine
Acridine Orange
Electron transitions
Rate constants
Hot Temperature
Temperature

Cite this

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abstract = "Measurements of the mean fluorescence lifetime τF, the lifetimes τDF of the delayed fluorescence, the phosphorescence lifetime τP, the fluorescence quantum yields {\O}F, and the ratios of the phosphorescence and the delayed fluorescence quantum yields {\O}P and {\O}DF respectively, to the fluorescence quantum yield {\O}F were carried out for three acridine dyes: acridine yellow, acridine orange and proflavine in poly(vinyl alcohol) films as a function of temperature. From these measurements, rate constants were determined for the radiative and radiationless transitions for both the lowest singlet excited state S1 and the triplet state T1. The temperature dependence of the efficiency {\O}T of the population of the triplet state was also examined.",
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Thermal deactivation of the lowest singlet and triplet excited states of acridine dyes in poly(vinyl alcohol) films. / Gryczynski, Ignacy; Kawski, Alfons; Nowaczyk, Kazimierz; Cherek, Henryk.

In: Journal of Photochemistry, Vol. 31, No. 2-3, 01.01.1985, p. 265-272.

Research output: Contribution to journalArticle

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T1 - Thermal deactivation of the lowest singlet and triplet excited states of acridine dyes in poly(vinyl alcohol) films

AU - Gryczynski, Ignacy

AU - Kawski, Alfons

AU - Nowaczyk, Kazimierz

AU - Cherek, Henryk

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