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Novel PTM–TEMPO Biradical for Fast Dissolution Dynamic Nuclear Polarization



22 December 2014

ol-2014-02644x 0008

Org. Lett.,2014,16(20), pp 5402–5405

The synthesis and characterization of a novel trityl-TEMPO biradical and the investigation of its properties as Dynamic Nuclear Polarization (DNP) polarizing agent are reported. Comparison with a structurally related monoradical (PTM–TEMPE) or mixtures of the two monoradical components reveals that the biradical has a much higher polarization efficiency and a faster polarization buildup. This offers the possibility of faster recycling further contributing to its efficiency as a polarizing agent.

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