title: Dynamic nuclear polarization NMR spectroscopy allows high-throughput characterization of microporous organic polymers.
abstract: 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.
authors.affiliation: Department of Chemistry, §Stephenson Institute for Renewable Energy, and ‡Center for Materials Discovery, University of Liverpool , Crown Street, Liverpool L69 7ZD, United Kingdom.
authors.forename: Frédéric
authors.initials: F
authors.lastname: Blanc
authors.forename: Samantha Y
authors.initials: SY
authors.lastname: Chong
authors.forename: Tom O
authors.initials: TO
authors.lastname: McDonald
authors.forename: Dave J
authors.initials: DJ
authors.lastname: Adams
authors.forename: Shane
authors.initials: S
authors.lastname: Pawsey
authors.forename: Marc A
authors.initials: MA
authors.lastname: Caporini
authors.forename: Andrew I
authors.initials: AI
authors.lastname: Cooper
mesh_terms: D002247:Carbon Isotopes; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009587:Nitrogen Isotopes; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D013499:Surface Properties; D014227:Triazines / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes; D011108:Polymers; D014227:Triazines