Abstract: Coherent polarization transfer among groups of dynamically polarized spins is explored and applied to field cycling expts. where spin evolution proceeds at low magnetic field while observation is performed at high field. The case of two nonequivalent spins-1/2 with scalar spin coupling is considered theor. in detail for the cases of sudden and adiabatic field change. The criterion for efficient polarization transfer is derived theor. and consistently confirmed exptl. for three photochem. reactions, involving spin systems of increasing complexity that exhibit chem. induced dynamic nuclear polarization:. (1) the two polarized protons of the purine base of adenosine monophosphate;. (2) four coupled indole protons of tryptophan; and. (3) long-range polarization transfer among the aliph. protons of cycloundecanone. The importance of polarization transfer in other cases with non-equil. population of the nuclear spin levels and the possibility of its utilization in field cycling NMR studies are discussed.

Cite: Ivanov K.L. , Miesel K. , Yurkovskaya A.V. , Korchak S.E. , Kiryutin A.S. , Vieth H.-M.
Transfer of CIDNP among coupled spins at low magnetic field
Applied Magnetic Resonance. 2006. V.30. N3-4. P.513-534. DOI: 10.1007/bf03166215 WOS OpenAlex

Dates:

Submitted:	May 4, 2006
Published online:	Jun 23, 2006
Published print:	Jun 30, 2006

Identifiers:

Web of science:	WOS:000243548800017
OpenAlex:	W2044238013

Citing:

DB	Citing
Web of science	35
OpenAlex	44

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