NMR in photo‐induced chemical exchange systems. Double‐resonance inverse fractional population transfer application for investigation of 1,2‐(2,2′‐dipyridyl)ethene photoisomerization kinetics

Abstract

ABSTRACT:The analytical expression describing the dynamics of nuclear magnetization with the use of double-resonance NMR by the procedure of inverse fractional population transfer in requirements of photo-induced chemical exchange (PICE) is obtained in this article. Laser-induced ( ϭ 308 nm) photoisomerization of 1,2-(2,2Ј-dipyridyl)ethene was studied by NMR and UV absorption spectroscopy under irreversible and photostationary conditions.

NMR application for a study of reversible photochemical kinetics: A multisite case

“…Existing numerous photo-CIDNP studies deal with non-photo-stationary irradiation conditions, some results was discussed (9). The solution of this problem is provided by the present work.…”

NMR Study of Paramagnetic Properties and the Kinetics of Hydrolysis of the Dy-tris-tBu-DOTA-ester Complex

“…[8,9,[19][20][21] In particular, the technique (named the homonuclear doubleresonance transfer of local nuclear spin population inversion) was proposed for a qualitative and quantitative study of the kinetics of reversible and irreversible processes. [22] Although these studies have been published in specialized literature. [8,9,22] Recently, a similar technique (for the qualitative determination of reversible and irreversible chemical processes) was published in a general chemical journal.…”

“…[22] Although these studies have been published in specialized literature. [8,9,22] Recently, a similar technique (for the qualitative determination of reversible and irreversible chemical processes) was published in a general chemical journal. [23] A detailed discussion of this issue is published in Ref.…”