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Hyperpolarised Carbon 13 Detection

Hyperpolarised Carbon 13 Detection

The figures below: (a) conventional NMR and (b) DNP NMR are natural abundance 13C acquisitions of diphenylacetylene at 20 µmol (3.5mg)*.

The conventional spectrum was acquired over 3 hours and 3000 scans, and the DNP NMR spectrum acquired in a single scan, after 3 hours polarisation.

Signal enhancements comparing DNP and conventional NMR are 2500 and 500 for peaks A and C respectively. 

*Comparison data from the same sample collected at 400MHz at constant vertical scale.

(a) Conventional NMR

(a) Conventional NMR

(b) DNP NMR

(b) DNP NMR

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