Day, Iain J, Mitchell, John C, Snowden, Martin J and Davis, Adrian L (2007) Applications of DNP-NMR for the measurement of heteronuclear T1 relaxation times. Journal of Magnetic Resonance, 187 (2). pp. 216-224. ISSN 1090-7807

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Abstract

Measurement of heteronuclear spinlattice relaxation times is hampered by both low natural abundance and low detection sensitivity. Combined with typically long relaxation times, this results in extended acquisition times which often renders the experiment impractical. Recently a variant of dynamic nuclear polarisation has been demonstrated in which enhanced nuclear spin polarisation, generated in the cryo-solid state, is transferred to the liquid state for detection. Combining this approach with small flip angle pulse trains, similar to the FLASH-T1 imaging sequence, allows the rapid determination of spinlattice relaxation times. In this paper we explore this method and its application to the measurement of T1 for both carbon-13 and nitrogen-15 at natural abundance. The effects of RF inhomogeneity and the influence of proton decoupling in the context of this experiment are also investigated.

Item Type:	Article
Schools and Departments:	School of Life Sciences > Chemistry
Depositing User:	Iain Day
Date Deposited:	06 Feb 2012 20:45
Last Modified:	28 Mar 2012 11:36
URI:	http://sro.sussex.ac.uk/id/eprint/27978

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