Acridine, conjugate acid

Nishida, Y.; Kikuchi, K.; Kokubun, H.
Protolytic reactions of acridine in the triplet state.
J. Photochem. 13: 75-81 (1980)

Acridine, conjugate acid
Solvent : Water, 296 K, pH = 1.0

wave length (nm) at maximum, extinction coefficient = 490, 5500

Triplet state population method: Flash photolysis (coupled with energy transfer)
Extinction coefficient estimation method: Energy transfer
Lifetime = 670 micro sec.
Comments: *Triplet ET from naphthalene-1,5-disulfonate and to Methylene Blue; epsilon relative to proflavine conjugate acid in water (epsilon549 = 5700 L mol–1 cm–1); pKa = 5.6

Kasama, K.; Kikuchi, K.; Yamamoto, S.; Uji-ie, K.; Nishida, Y.; Kokubun, H.
Relaxation mechanism of excited acridine in nonreactive solvents.
J. Phys. Chem. 85: 1291-6 (1981)

Acridine, conjugate acid
Solvent : Water, 296 K, pH Acidic

wave length at maximum = 770 nm wave length (nm) at maximum, extinction coefficient = 490, 7700 ± 800

Triplet state population method: Pulsed laser photolysis (coupled with energy transfer)
Extinction coefficient estimation method: Total depletion
Comments: *Triplet ET from disodium naphthalene-1,5-disulfonate

* Evidence supporting the assignment of the transient triplet state.
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