9-Acridone

Fushimi, K.; Kikuchi, K.; Kokubun, H.
The hydrogen bonding effect of pyridine on the deactivation of the excited states of acridone.
J. Photochem. 5: 457-68 (1976)

9-Acridone
Solvent : Benzene

wave length (nm) at maximum, extinction coefficient = 620, 37800

Triplet state population method: Pulsed laser photolysis
Extinction coefficient estimation method: Energy transfer
Lifetime = 20 micro sec.
Comments: *Triplet ET to anthracene, oxygen quenching; epsilon relative to anthracene in benzene (epsilon430 = 45500 L mol–1 cm–1)

Shcherbo, S.N.; Val'kova, G.A.; Shigorin, D.N.
Determination of the energies of the highly excited triplet states of derivatives of acridinone, linear quinacridinone, and phenanthridinone.
Russ. J. Phys. Chem. 55: 452-3 (1981)

9-Acridone
Solvent : EtOH, 300 K

wave length at maximum = 580; 310 nm

Triplet state population method: Flash photolysis

Fushimi, K.; Kikuchi, K.; Kokubun, H.
The hydrogen bonding effect of pyridine on the deactivation of the excited states of acridone.
J. Photochem. 5: 457-68 (1976)

9-Acridone
Solvent : Pyridine

wave length at maximum = 605a nm

Triplet state population method: Pulsed laser photolysis
Lifetime = 3.3 micro sec.
Comments: *Triplet ET to anthracene; H-bonded species

* 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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