โ Scribed by Deb Narayan Nath; Mihir Chowdhury
No coin nor oath required. For personal study only.
The effect of a magnetic field on the pyrene-N,N-dimethyIaniIine esciples luminescence in methanol has been studied using an improved phase-sensitive detection technique. The wavelength dependence of B,,z, the effect of isotopic substitution of the solvent, and the consequences of using mixed donors have been investigated. The results throw light on the environmental perturbation of the intersystem crossing process in solvent-separated radical pairs.
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Time-resolved studies of the magnetic field effect on pyrene-dimethylanilie exciplex luminescence in non-alcoholic solvent mixtures (dielectric constant of 16) have been performed with the help of a time-correlated single-photon counting technique. The shape of the time-variation curve is interprete
It is observed that the lanthanide acetylacetonates (Ln( acac) ,) quench the magnetic field effect of pyrene-dimethylaniline exciplex luminescence. The quenching rate constants (Q) for the different Ln 3+ ions follow the same trend as was previously observed in the photolysis of quinones and ketones
The luminescence from gamma-irradiated solutions of fluorene increases when a magnetic field is applied, in agreement with recent theoretical predictions. The magnitude of the field effect is shown to be solvent dependent due to the chaqeS in the solute ion recombination rates. In an earlier public
The effect of a high magnetic field ( < 14 T) on the intramolecular exciplex fluorescence generated from a phenanthrene and dimethylaniline chain-linked molecule is studied in acetonitrile. On increasing the magnetic field from zero to = 1 T, the fluorescence decay rate decreases steeply and then in