Acriflavine cation

Lim, E.C.; Swenson, G.W.
One-electron photo-ionization of acridine dyes in rigid media: Evidence for the formation of transient radical ion.
J. Chem. Phys. 39: 2768-9 (1963)

Acriflavine cation
Solvent : EPA, 77 K

wave length at maximum = 640; 540 nm

Triplet state population method: Photostationary
Comments: *Phosphorescence decay; EPA was 8:3:5 Et2O to isopentane to EtOH; "trypaflavine"

Morozov, Yu.V.; Savenko, A.K.
Probabilities of intramolecular radiative and radiationless transitions of some amino derivatives of acridine.
Mol. Photochem. 8: 1-43 (1977)

Acriflavine cation
Solvent : Glycerol, 293 K

wave length at maximum = 620a; 550a nm

Triplet state population method: Flash photolysis
Comments: Solvent has added glucose

Vogelmann, E.; Rauscher, W.; Kramer, H.E.A.
Reactivity of acridine dye triplet states in electron transfer reactions.
Photochem. Photobiol. 29: 771-6 (1979)

Acriflavine cation
Solvent : MeOH, pH Basic

wave length (nm) at maximum, extinction coefficient = 620, 8600

Triplet state population method: Flash photolysis
Extinction coefficient estimation method: Total depletion
Lifetime = 110 micro sec.
Comments: Peak at 490 nm obscured by singlet absorption (authors)

Laffitte, E.; Nouchi, G.
Contribution a l'etude de l'etat metastable des molecules de colorants: Bandes d'absorption dans le domaine visible.
C.R. Seances Acad. Sci. 248: 2746-8 (1959)

Acriflavine cation
Solvent : PMMA, 193 K

wave length at maximum = 555; 530 nm

Triplet state population method: Photostationary
Comments: Shoulders at 650 and 505 nm

Lochet, R.; Nouchi, G.
Contribution a l'etude de l'etat triplet des colorants: Spectres d'absorption dans le domaine des grandes longueurs d'onde, rouge et proche infrarouge.
C.R. Seances Acad. Sci. 260: 1897-1900 (1965)

Acriflavine cation
Solvent : PMMA, 77 K

wave length at maximum = 1300; 1190; 1080; 940; 800; 650 nm

Triplet state population method: Photostationary

Nouchi, G.
Etude et interpretation des spectres d'absorption triplet-triplet. Classification des etats triplets superieurs. I. Les matieres colorantes.
J. Chim. Phys. Phys.-Chim. Biol. 66: 548-53 (1969)

Acriflavine cation
Solvent : PMMA, 77 K, pH = 4.0

wave length at maximum = 1060a; 679a; 541a nm

Triplet state population method: Photostationary
Comments: Relative intensities (10:3:3); shoulder at 952a nm; solvent contains 2-chloroethanol

* Evidence supporting the assignment of the transient triplet state.
a Data have been obtained by computer-assisted digitization from spectrum in cited reference.
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