NMR signal enhancement of ＞50 000 times in fast dissolution dynamic nuclear polarization.

Herein, we report the synthesis and the study of a novel mixed biradical with BDPA and TEMPO radical units that are covalently bound by an ester group (BDPAesterTEMPO) as a polarizing agent for fast dissolution DNP. The biradical exhibits an extremely high DNP NMR enhancement of ＞50 000 times, which constitutes one of the largest signal enhancements observed so far, to the best of our knowledge. [ABSTRACT FROM AUTHOR]
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