Photochemistry of the nonspecific hydroxyl radical generator, N-hydroxypyridine-2(1H)-thione

Journal of the American Chemical Society

Volumn 118, Issue 42, 1996, Pages 10113-10123

  Aveline, Béatrice M ^a   Kochevar, Irene E ^a   Redmond, Robert W ^a  

^a MASSACHUSETTS GENERAL HOSPITAL   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

PYRIDINE DERIVATIVE;

ARTICLE; PHOTOCHEMISTRY; SPECTROPHOTOMETRY;

EID: 0029855489     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja961988t     Document Type: Article

References (69)

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48. • at this wavelength.
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52. -1.
53. •.
54. The identification of this compound is facile since it is the only photoproduct of N-HPT to present an absorption at long wavelength (≥350 nm).
55. • and the triplet state (vide infra).
56. 3(N-HPT)*.
57. This method could not be used to determine the quantum yield of intersystem crossing of N-HPT in aqueous buffer at pH = 2 as the solubility of M540 in that solvent was found to be too low.
58. In that case, 2-hydroxybenzophenone, a photoinert reagent, was added to the solution to mimic the filter effect due to N-HPT in the second experiment.
59. Tfrom eq 3.
60. -1) with β-carotene.
61. • and prevent the formation of the secondary species which is otherwise visible at that wavelength.
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63. • with their precursor.
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68. This concentration can be determined to be ∼3 μM, based on the published molar ratio of 54 between the thione and the thiol forms.
69. T ≈ 0.05), the detection of the IR emission of singlet oxygen was not attempted.