Magnetic field effect on triplet formation as a probe of intersystem crossing mechanisms in benzo [a] pyrene diol epoxide derivative-guanosine complexes and covalent adducts

Vladimir Ya Shafirovich, Vladimir A. Kuzmin, Nicholas Geacintov

Research output: Contribution to journalArticle

Abstract

The effects of magnetic fields on triplet formation have been examined in covalent benzo[a]pyrene diol epoxide-N2-2′-deoxyguanosine (BPDE-dG) adducts, and noncovalently interacting tetraol (BPT)/dG hydrolysis products in aqueous and N,N′-dimethylformamide (DMF) solutions. A magnetic field effect (≤ 8%) of opposite sign and saturated at 10 mT on the yield of 3BPT triplets and radical anions BPT-{radical dot} is observed in the BPT/dG system in DMF and is attributed to a hyperfine coupling mechanism. Neither formation of BPT-{radical dot} nor magnetic field effects on 3BPT yields are observed in either the covalent or noncovalent interacting systems in water.

Original languageEnglish (US)
Pages (from-to)185-190
Number of pages6
JournalChemical Physics Letters
Volume222
Issue number1-2
DOIs
StatePublished - May 6 1994

Fingerprint

Magnetic field effects
guanosines
Dimethylformamide
epoxy compounds
Guanosine
Benzo(a)pyrene
Epoxy Compounds
pyrenes
adducts
Derivatives
Deoxyguanosine
probes
magnetic fields
Anions
Hydrolysis
Magnetic fields
hydrolysis
Water
anions
products

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Magnetic field effect on triplet formation as a probe of intersystem crossing mechanisms in benzo [a] pyrene diol epoxide derivative-guanosine complexes and covalent adducts. / Shafirovich, Vladimir Ya; Kuzmin, Vladimir A.; Geacintov, Nicholas.

In: Chemical Physics Letters, Vol. 222, No. 1-2, 06.05.1994, p. 185-190.

Research output: Contribution to journalArticle

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