Direct observation of monophotonic photoionization in tryptophan excited by 300-nm radiation. A laser photolysis study

Journal Article · Wed Jan 19 23:00:00 EST 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100225a002· OSTI ID:6163928

Bazin, M; Patterson, L K; Santus, R

Direct observation of photoionization in aqueous tryptophan by laser photolysis at 280, 292, and 300 nm gives a constant value for the monophotonic quantum yield of hydrated electrons, phi = 0.075 +/- 0.02, over this range.These findings, along with previous studies at 265 nm, indicate uniform photoionization over the whole of the tryptophan near-UV band. Additionally, the yield of tryptophan triplet is found to be essentially constant over the same range.

• Research Organization: Univ. of Notre Dame, IN
• OSTI ID: 6163928
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 87:2; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
AMINO ACIDS
AZOLES
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INDOLES
IONIZATION
LASER RADIATION
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARAMETRIC ANALYSIS
PHOTOCHEMICAL REACTIONS
PHOTOIONIZATION
PHOTOLYSIS
PYRROLES
RADIATIONS
TRYPTOPHAN