33490-96-9Relevant articles and documents
CLEVEAGE RATES FOR RADIOLYSIS-PRODUCED RADICAL ANIONS OF NAPHTHYLMETHYL PHENYL ETHERS AND NAPHTHYL BENZYL ETHERS
Guthrie, Robert D.,Patwardhan, Manjiri,Chateauneuf, John E.
, p. 147 - 152 (1994)
Cleveage reactions of α- and β-naphthylmethyl phenyl ethers and of α- and β-naphthyl benzyl ethers were studied by pulse radiolysis.Transient spectra indicate that reactions occur via electron capture followed by cleavage of the resultant radical anions to give arylmethyl radicals and aryloxide ions.Product studies of extensively irradiated samples are consistent with this scheme and show patterns which are informative for radiation studies in general.The reactions were studied in several solvents.The behavior of transient spectra obtained in acetonitrile for these ethers shows clearly that radical anions of the naphthylmethyl ethers cleave more rapidly than do the radical anions of the naphthyl benzyl ethers.
Solvent dependence of triplet energy transfer from triplet benzophenone to naphthols and methoxynaphthalenes
Tanaka, Takuya,Yamaji, Minoru,Shizuka, Haruo
, p. 1179 - 1187 (2007/10/03)
Solvent effects on triplet-triplet energy transfer (TET) from triplet benzophenone (3BP*) to naphthol (NpOH) competing with hydrogen atom abstraction (HA) of 3BP* from NpOH and methoxynaphthalene (NpOMe) without HA have been studied in fluid media by 355 nm laser flash photolysis at 295 K. The efficiency (ψTET) and rate constant (kTET) of TET in these systems were obtained. It was shown that the value of kTET was dependent not only on the solvent viscosity (η) but also on the dielectric constant (κ) of the solvents, and ψTET and kTET increased with increasing κ, contrary to the Dexter prediction. An increase in kTET with increasing κ may be caused by the contribution of the dipole-dipole interaction (by the Foerster theory) due to perturbation of the 1(π, π*) state to the lowest triplet state 3(n, π*) of benzophenone, in addition to the electron-exchange mechanism (by the Dexter theory).
