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J Am Chem Soc. 2013 Oct 16;135(41):15290-3. doi: 10.1021/ja408074v. Epub 2013 Oct 2.

Dynamic nuclear polarization NMR spectroscopy allows high-throughput characterization of microporous organic polymers.

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Department of Chemistry, §Stephenson Institute for Renewable Energy, and ‡Center for Materials Discovery, University of Liverpool , Crown Street, Liverpool L69 7ZD, United Kingdom.


Dynamic nuclear polarization (DNP) solid-state NMR was used to obtain natural abundance (13)C and (15)N CP MAS NMR spectra of microporous organic polymers with excellent signal-to-noise ratio, allowing for unprecedented details in the molecular structure to be determined for these complex polymer networks. Sensitivity enhancements larger than 10 were obtained with bis-nitroxide radical at 14.1 T and low temperature (∼105 K). This DNP MAS NMR approach allows efficient, high-throughput characterization of libraries of porous polymers prepared by combinatorial chemistry methods.

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