2-Amino-3-(4-methoxy-6-benzothiazolyl)propionate ion

Lambert, C.; Sinclair, R.S.; Truscott, T.G.; Land, E.J.; Chedekel, M.R.; Liu, C.-T.
Photochemistry of benzothiazole models of pheomelanin.
Photochem. Photobiol. 39: 5-10 (1984)

2-Amino-3-(4-methoxy-6-benzothiazolyl)propionate ion
Solvent : Water, pH = 13

wave length (nm) at maximum, extinction coefficient = 370, 5000

Triplet state population method: Pulsed laser photolysis
Extinction coefficient estimation method: Total depletion
Comments: *Oxygen quenching and triplet ET to crocetin; epsilon considered a lower limit

Lambert, C.; Sinclair, R.S.; Truscott, T.G.; Land, E.J.; Chedekel, M.R.; Liu, C.-T.
Photochemistry of benzothiazole models of pheomelanin.
Photochem. Photobiol. 39: 5-10 (1984)

2-Amino-3-(4-methoxy-6-benzothiazolyl)propionate ion
Solvent : Water, pH = 13

wave length (nm) at maximum, extinction coefficient = 370, 8000

Triplet state population method: Pulsed laser photolysis
Extinction coefficient estimation method: Energy transfer
Lifetime = 64 micro sec.
Triplet energy transfer rate constant = 1.7 x 1010 L mol–1 sec–1.
Comments: *Oxygen quenching and triplet ET to crocetin; epsilon relative to crocetin in water (epsilon470 = 75000 L mol–1 cm–1); epsilon considered an upper limit

* Evidence supporting the assignment of the transient triplet state.
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