{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T17:15:25Z","timestamp":1788455725071,"version":"build-2803163510"},"reference-count":84,"publisher":"American Chemical Society (ACS)","issue":"34","license":[{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-045"}],"funder":[{"DOI":"10.13039\/501100001665","name":"Agence Nationale de la Recherche","doi-asserted-by":"publisher","award":["ANR-22- CE09-0017"],"award-info":[{"award-number":["ANR-22- CE09-0017"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001665","name":"Agence Nationale de la Recherche","doi-asserted-by":"publisher","award":["ANR-22-CE93-0006-01"],"award-info":[{"award-number":["ANR-22-CE93-0006-01"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001711","name":"Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung","doi-asserted-by":"publisher","award":["200020B_192050"],"award-info":[{"award-number":["200020B_192050"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001711","name":"Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung","doi-asserted-by":"publisher","award":["200021L_213070"],"award-info":[{"award-number":["200021L_213070"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/na","name":"Horizon 2020 European Commission","doi-asserted-by":"publisher","award":["101041762"],"award-info":[{"award-number":["101041762"]}],"id":[{"id":"10.13039\/na","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,9,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Over the past 15 years, dynamic nuclear polarization (DNP) has emerged as a unique and powerful strategy to enhance the solid-state nuclear magnetic resonance (NMR) signals of surface species. This approach, known as DNP surface-enhanced NMR spectroscopy (DNP SENS), has been successfully applied to a broad range of functional materials. DNP SENS relies on the use of exogenous sources of electrons, typically stable organic radicals. A key method for adding these polarizing agents to the target material and obtaining high NMR signal enhancement factors is incipient wetness impregnation (IWI) with a radical-containing solution. However, DNP SENS via IWI is not amenable to all materials due to chemical incompatibilities between the polarizing solution and the surface of interest. This strongly limits the application fields of DNP-SENS. Here, we report the design and synthesis of new porous silica-based solids that incorporate organic biradicals within their bulk of their framework. These polarizing solids can be mixed with other powdered materials, and once impregnated with a pure solvent or solvent mixture, they efficiently transfer the polarization to external surfaces. Numerical simulations provide a framework to describe the 1H-spin diffusion-relayed polarization transfer from the polarizing solid to the target solid. This solid-to-solid relayed DNP approach is demonstrated with pristine and functionalized alumina particles, as well as sensitive catalytic surfaces. Substantial NMR sensitivity gains are reported on surface species, establishing a new strategy for DNP SENS.<\/jats:p>","DOI":"10.1021\/jacs.6c09647","type":"journal-article","created":{"date-parts":[[2026,8,22]],"date-time":"2026-08-22T10:00:01Z","timestamp":1787392801000},"page":"36922-36931","source":"Crossref","is-referenced-by-count":0,"title":["Surface-Enhanced NMR\nSpectroscopy via Solid-to-Solid\nRelayed Dynamic Nuclear Polarization"],"prefix":"10.1021","volume":"148","author":[{"given":"Salah-Eddine","family":"Akrial","sequence":"first","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 5 Rue de la Doua , ,","place":["Villeurbanne, France, 69100"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nghia Huu","family":"Le","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 5 Rue de la Doua , ,","place":["Villeurbanne, France, 69100"]},{"name":"Universite\u0301 Lyon 1 , , 43 Boulevard du 11novembre 1918 , ,","place":["Villeurbanne, France, 69616"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soleyah","family":"Houguet","sequence":"additional","affiliation":[{"name":"Aix Marseille Uni , , ,","place":["Marseille, France, 13013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6484-4323","authenticated-orcid":true,"given":"Teresa","family":"Insinna","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 5 Rue de la Doua , ,","place":["Villeurbanne, France, 69100"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hugo","family":"Lingua","sequence":"additional","affiliation":[{"name":"Aix Marseille Uni , , ,","place":["Marseille, France, 13013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2208-4148","authenticated-orcid":true,"given":"Domenico","family":"Gioffre\u0300","sequence":"additional","affiliation":[{"name":"ETH Zu\u0308rich , , ,","place":["Zu\u0308rich, Switzerland, CH-8093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6642-4808","authenticated-orcid":true,"given":"Gilles","family":"Casano","sequence":"additional","affiliation":[{"name":"Aix Marseille Uni , , ,","place":["Marseille, France, 13013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charline","family":"Dalverny","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 5 Rue Raphael Dubois , ,","place":["Villeurbanne, France, 69100"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrey V.","family":"Pichugov","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 43 Boulevard du 11novembre 1918 , ,","place":["Villeurbanne, France, 69616"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laurent","family":"Veyre","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 43 Boulevard du 11novembre 1918 , ,","place":["Villeurbanne, France, 69616"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6372-428X","authenticated-orcid":true,"given":"Judith","family":"Schlagnitweit","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 5 Rue de la Doua , ,","place":["Villeurbanne, France, 69100"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9660-3890","authenticated-orcid":true,"given":"Christophe","family":"Cope\u0301ret","sequence":"additional","affiliation":[{"name":"ETH Zu\u0308rich , , ,","place":["Zu\u0308rich, Switzerland, CH-8093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Gajan","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 43 Boulevard du 11novembre 1918 , ,","place":["Villeurbanne, France, 69616"]},{"name":"Universite\u0301 Lyon 1 , , ,","place":["Villeurbanne, France, 69100"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8528-0731","authenticated-orcid":true,"given":"Cle\u0301ment","family":"Camp","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 43 Boulevard du 11novembre 1918 , ,","place":["Villeurbanne, France, 69616"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4320-4313","authenticated-orcid":true,"given":"Olivier","family":"Ouari","sequence":"additional","affiliation":[{"name":"Aix Marseille Uni , , ,","place":["Marseille, France, 13013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5436-2467","authenticated-orcid":true,"given":"Chloe\u0301","family":"Thieuleux","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 43 Boulevard du 11novembre 1918 , ,","place":["Villeurbanne, France, 69616"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1958-2840","authenticated-orcid":true,"given":"Anne","family":"Lesage","sequence":"additional","affiliation":[{"name":"Universite\u0301 Lyon 1 , , 5 Rue de la Doua , ,","place":["Villeurbanne, France, 69100"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,8,21]]},"reference":[{"issue":"9","key":"2026090312092519400_cit1","doi-asserted-by":"publisher","first-page":"1942","DOI":"10.1021\/ar300322x","article-title":"Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy","volume":"46","author":"Rossini","year":"2013","journal-title":"Acc. Chem. Res."},{"issue":"4","key":"2026090312092519400_cit2","doi-asserted-by":"publisher","first-page":"93","DOI":"10.1002\/9780470034590.emrstm1554","article-title":"DNP in Materials\nScience: Touching\nthe Surface","volume":"7","author":"Berruyer","year":"2018","journal-title":"eMagRes"},{"key":"2026090312092519400_cit3","doi-asserted-by":"publisher","first-page":"4425","DOI":"10.1021\/acs.chemmater.0c01801","article-title":"Dynamic\nNuclear Polarization (DNP)\n101: A New Era for Materials","volume":"32","author":"Hooper","year":"2020","journal-title":"Chem. Mater."},{"issue":"44","key":"2026090312092519400_cit4","doi-asserted-by":"publisher","first-page":"15459","DOI":"10.1021\/ja104771z","article-title":"Surface Enhanced\nNMR Spectroscopy by Dynamic Nuclear Polarization","volume":"132","author":"Lesage","year":"2010","journal-title":"J. Am. Chem. Soc."},{"issue":"15","key":"2026090312092519400_cit5","doi-asserted-by":"publisher","first-page":"4743","DOI":"10.1002\/anie.201510821","article-title":"Atomistic\nDescription of Reaction\nIntermediates for Supported Metathesis Catalysts Enabled by DNP SENS","volume":"55","author":"Ong","year":"2016","journal-title":"Angew. Chem., Int. Ed."},{"issue":"32","key":"2026090312092519400_cit6","doi-asserted-by":"publisher","first-page":"17409","DOI":"10.1021\/acs.jpcc.7b06807","article-title":"Revealing\nStructure Reactivity Relationships\nin Heterogenized Dirhodium Catalysts by Solid-State NMR Techniques","volume":"121","author":"Liu","year":"2017","journal-title":"J. Phys. Chem. C"},{"issue":"31","key":"2026090312092519400_cit7","doi-asserted-by":"publisher","first-page":"9165","DOI":"10.1002\/anie.201704032","article-title":"Natural Abundance\nO-17 DNP NMR Provides Precise O-H Distances and Insights into the\nBronsted Acidity of Heterogeneous Catalysts","volume":"56","author":"Perras","year":"2017","journal-title":"Angew. Chim. Int. Ed. Engl."},{"issue":"35","key":"2026090312092519400_cit8","doi-asserted-by":"publisher","first-page":"19529","DOI":"10.1039\/C9CP04099D","article-title":"Shedding light on the\natomic-scale structure of amorphous\nsilica-alumina and its Bronsted acid sites","volume":"21","author":"Perras","year":"2019","journal-title":"Phys. Chem. Chem. Phys."},{"issue":"1","key":"2026090312092519400_cit9","doi-asserted-by":"publisher","first-page":"3828","DOI":"10.1038\/s41467-020-17711-6","article-title":"Catalytic\nnanosponges of acidic aluminosilicates for plastic degradation and\nCO2 to fuel conversion","volume":"11","author":"Maity","year":"2020","journal-title":"Nat. Commun."},{"issue":"44","key":"2026090312092519400_cit10","doi-asserted-by":"publisher","first-page":"18936","DOI":"10.1021\/jacs.0c09101","article-title":"The Structure of\nMolecular and Surface Platinum Sites Determined by DNP-SENS and Fast\nMAS Pt- 195 Solid-State NMR Spectroscopy","volume":"142","author":"Venkatesh","year":"2020","journal-title":"J.\nAm. Chem. Soc."},{"issue":"23","key":"2026090312092519400_cit11","doi-asserted-by":"publisher","first-page":"10270","DOI":"10.1021\/jacs.2c01013","article-title":"Multiple Surface Site Three-Dimensional\nStructure Determination of a Supported Molecular Catalyst","volume":"144","author":"Jabbour","year":"2022","journal-title":"J. Am. Chem. Soc."},{"issue":"9","key":"2026090312092519400_cit12","doi-asserted-by":"publisher","first-page":"1113","DOI":"10.1021\/acscentsci.8b00196","article-title":"Resolving the Core and the Surface of CdSe Quantum\nDots and Nanoplatelets Using Dynamic Nuclear Polarization Enhanced\nPASS-PIETA NMR Spectroscopy","volume":"4","author":"Piveteau","year":"2018","journal-title":"ACS Cent. Sci."},{"issue":"39","key":"2026090312092519400_cit13","doi-asserted-by":"publisher","first-page":"15532","DOI":"10.1021\/jacs.9b05509","article-title":"Probing the Surface Structure of\nSemiconductor Nanoparticles by DNP SENS with Dielectric Support Materials","volume":"141","author":"Hanrahan","year":"2019","journal-title":"J. Am. Chem. Soc."},{"issue":"48","key":"2026090312092519400_cit14","doi-asserted-by":"publisher","first-page":"17163","DOI":"10.1002\/anie.201906726","article-title":"Disclosing\nInterfaces of ZnO Nanocrystals Using Dynamic\nNuclear Polarization: Sol-Gel versus Organometallic Approach","volume":"58","author":"Lee","year":"2019","journal-title":"Angew. Chem., Int. Ed."},{"issue":"9","key":"2026090312092519400_cit15","doi-asserted-by":"publisher","first-page":"3998","DOI":"10.1021\/jacs.1c12538","article-title":"Colloidal-ALD-Grown\nHybrid Shells Nucleate via a Ligand-Precursor Complex","volume":"144","author":"Lecina","year":"2022","journal-title":"J. Am. Chem. Soc."},{"issue":"40","key":"2026090312092519400_cit16","doi-asserted-by":"publisher","first-page":"27655","DOI":"10.1021\/jacs.4c09113","article-title":"Atomic-Level Structure of the Organic-Inorganic Interface\nof Colloidal ZnO Nanoplatelets from Dynamic Nuclear Polarization-Enhanced\nNMR","volume":"146","author":"Badoni","year":"2024","journal-title":"J. Am. Chem. Soc."},{"issue":"25","key":"2026090312092519400_cit17","doi-asserted-by":"publisher","first-page":"11173","DOI":"10.1021\/jacs.0c03760","article-title":"Interactions of\nOxide Surfaces with Water Revealed with Solid-State NMR Spectroscopy","volume":"142","author":"Chen","year":"2020","journal-title":"J. Am. Chem. Soc."},{"key":"2026090312092519400_cit18","doi-asserted-by":"publisher","first-page":"10659","DOI":"10.1021\/jacs.9b13838","article-title":"Observation of Low-\u03b3\nQuadrupolar Nuclei by Surface-Enhanced\nNMR Spectroscopy","volume":"142","author":"Nagashima","year":"2020","journal-title":"J. Am. Chem. Soc."},{"issue":"18","key":"2026090312092519400_cit19","doi-asserted-by":"publisher","first-page":"4858","DOI":"10.1021\/acs.jpclett.4c00563","article-title":"Probing the Surface\nof Oxide Nanoparticles\nUsing DNP-Enhanced High-Resolution NMR of Quadrupolar Nuclei","volume":"15","author":"Nagashima","year":"2024","journal-title":"J. Phys. Chem. Lett."},{"issue":"17","key":"2026090312092519400_cit20","doi-asserted-by":"publisher","first-page":"6219","DOI":"10.1021\/ja502113d","article-title":"Dynamic Nuclear\nPolarization NMR Enables the Analysis of Sn-Beta Zeolite Prepared\nwith Natural Abundance 119Sn Precursors","volume":"136","author":"Gunther","year":"2014","journal-title":"J.\nAm. Chem. Soc."},{"issue":"43","key":"2026090312092519400_cit21","doi-asserted-by":"publisher","first-page":"8184","DOI":"10.1039\/c8sc03848a","article-title":"Fast\ndetection and structural identification of carbocations\non zeolites by dynamic nuclear polarization enhanced solid-state NMR","volume":"9","author":"Xiao","year":"2018","journal-title":"Chem. Sci."},{"issue":"39","key":"2026090312092519400_cit22","doi-asserted-by":"publisher","first-page":"8946","DOI":"10.1039\/C9SC02215E","article-title":"Surface enhanced\ndynamic nuclear polarization solid-state NMR spectroscopy sheds light\non Bronsted-Lewis acid synergy during the zeolite catalyzed methanol-to-hydrocarbon\nprocess","volume":"10","author":"Chowdhury","year":"2019","journal-title":"Chem. Sci."},{"issue":"36","key":"2026090312092519400_cit23","doi-asserted-by":"publisher","first-page":"20028","DOI":"10.1021\/acs.jpcc.1c05501","article-title":"Atomic-Insight\ninto Zeolite Catalyst Forming-an Advanced NMR Study","volume":"125","author":"Lakiss","year":"2021","journal-title":"J. Phys. Chem. C"},{"issue":"44","key":"2026090312092519400_cit24","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202310878","article-title":"Unravelling\nthe Molecular Structure and Confining Environment\nof an Organometallic Catalyst Heterogenized within Amorphous Porous\nPolymers","volume":"62","author":"Jabbour","year":"2023","journal-title":"Angew. Chem., Int. Ed."},{"issue":"33","key":"2026090312092519400_cit25","doi-asserted-by":"publisher","first-page":"15175","DOI":"10.1021\/jacs.2c05316","article-title":"Dynamic Nuclear Polarization\nEnables\nNMR of Surface Passivating Agents on Hybrid Perovskite Thin Films","volume":"144","author":"Mishra","year":"2022","journal-title":"J. Am. Chem. Soc."},{"issue":"23","key":"2026090312092519400_cit26","doi-asserted-by":"publisher","first-page":"11094","DOI":"10.1021\/acs.jpcc.3c01527","article-title":"Dynamic Nuclear\nPolarization of Inorganic Halide Perovskites","volume":"127","author":"Mishra","year":"2023","journal-title":"J. Phys. Chem. C"},{"issue":"33","key":"2026090312092519400_cit27","doi-asserted-by":"publisher","first-page":"21894","DOI":"10.1021\/acsnano.4c02057","article-title":"Surface\nStructure of Lecithin-Capped Cesium Lead Halide\nPerovskite Nanocrystals Using Solid-State and Dynamic Nuclear Polarization\nNMR Spectroscopy","volume":"18","author":"Sarkar","year":"2024","journal-title":"ACS Nano"},{"issue":"1","key":"2026090312092519400_cit28","doi-asserted-by":"publisher","first-page":"123","DOI":"10.1002\/anie.201106030","article-title":"Dynamic Nuclear\nPolarization Enhanced Solid-State NMR Spectroscopy of Functionalized\nMetal-Organic Frameworks","volume":"51","author":"Rossini","year":"2012","journal-title":"Angew. Chem., Int.\nEd."},{"issue":"13","key":"2026090312092519400_cit29","doi-asserted-by":"publisher","first-page":"2322","DOI":"10.1021\/acs.jpclett.6b00860","article-title":"DNP-Enhanced Ultrawideline Solid-State NMR Spectroscopy:\nStudies of Platinum in Metal-Organic Frameworks","volume":"7","author":"Kobayashi","year":"2016","journal-title":"J. Phys. Chem. Lett."},{"issue":"31","key":"2026090312092519400_cit30","doi-asserted-by":"publisher","first-page":"9854","DOI":"10.1021\/jacs.8b03408","article-title":"Understanding\nFluoroethylene Carbonate\nand Vinylene Carbonate Based Electrolytes for Si Anodes in Lithium\nIon Batteries with NMR Spectroscopy","volume":"140","author":"Jin","year":"2018","journal-title":"J. Am.\nChem. Soc."},{"issue":"35","key":"2026090312092519400_cit31","doi-asserted-by":"publisher","first-page":"24476","DOI":"10.1021\/jacs.4c06823","article-title":"Composition and Structure of the solid electrolyte\ninterphase on Na-Ion Anodes Revealed by Exo- and Endogenous Dynamic\nNuclear Polarization-NMR Spectroscopy","volume":"146","author":"Steinberg","year":"2024","journal-title":"J. Am.\nChem. Soc."},{"issue":"4","key":"2026090312092519400_cit32","doi-asserted-by":"publisher","first-page":"1417","DOI":"10.1021\/acs.chemrev.2c00534","article-title":"Spin Hyperpolarization in Modern Magnetic Resonance","volume":"123","author":"Eills","year":"2023","journal-title":"Chem. Rev."},{"issue":"35","key":"2026090312092519400_cit33","doi-asserted-by":"publisher","first-page":"10844","DOI":"10.1021\/ja039749a","article-title":"Dynamic Nuclear\nPolarization with Biradicals","volume":"126","author":"Hu","year":"2004","journal-title":"J. Am. Chem. Soc."},{"issue":"35","key":"2026090312092519400_cit34","doi-asserted-by":"publisher","first-page":"11385","DOI":"10.1021\/ja061284b","article-title":"TOTAPOL:\nA biradical polarizing agent for dynamic nuclear polarization experiments\nin aqueous media","volume":"128","author":"Song","year":"2006","journal-title":"J. Am. Chem. Soc."},{"issue":"4","key":"2026090312092519400_cit35","doi-asserted-by":"publisher","first-page":"2284","DOI":"10.1021\/ja210177v","article-title":"A Slowly Relaxing\nRigid Biradical for Efficient Dynamic Nuclear Polarization Surface-Enhanced\nNMR Spectroscopy: Expeditious Characterization of Functional Group\nManipulation in Hybrid Materials","volume":"134","author":"Zagdoun","year":"2012","journal-title":"J. Am. Chem.\nSoc."},{"issue":"41","key":"2026090312092519400_cit36","doi-asserted-by":"publisher","first-page":"10858","DOI":"10.1002\/anie.201304657","article-title":"Highly Efficient Water-Soluble Polarizing\nAgents for Dynamic Nuclear Polarization at High Frequency","volume":"52","author":"Sauve\u0301e","year":"2013","journal-title":"Angew. Chem., Int. Ed."},{"key":"2026090312092519400_cit37","doi-asserted-by":"publisher","first-page":"12790","DOI":"10.1021\/ja405813t","article-title":"Large Molecular\nWeight Nitroxide Biradicals Providing Efficient Dynamic Nuclear Polarization\nat Temperatures up to 200 K","volume":"135","author":"Zagdoun","year":"2013","journal-title":"J. Am. Chem. Soc."},{"issue":"4","key":"2026090312092519400_cit38","doi-asserted-by":"publisher","first-page":"195","DOI":"10.1002\/9780470034590.emrstm1547","article-title":"Polarizing\nAgents: Evolution and\nOutlook in Free Radical Development for DNP","volume":"7","author":"Casano","year":"2018","journal-title":"eMagRes"},{"issue":"51","key":"2026090312092519400_cit39","doi-asserted-by":"publisher","first-page":"13485","DOI":"10.1002\/chem.201801251","article-title":"Efficiency\nof Water-Soluble Nitroxide Biradicals for Dynamic Nuclear Polarization\nin Rotating Solids at 9.4 T: bcTol-M and cyolyl-TOTAPOL as New Polarizing\nAgents","volume":"24","author":"Geiger","year":"2018","journal-title":"Chem. - Eur. J."},{"issue":"35","key":"2026090312092519400_cit40","doi-asserted-by":"publisher","first-page":"11013","DOI":"10.1021\/jacs.8b04911","article-title":"Computationally Assisted Design of Polarizing Agents\nfor Dynamic Nuclear Polarization Enhanced NMR: The AsymPol Family","volume":"140","author":"Mentink-Vigier","year":"2018","journal-title":"J. Am. Chem. Soc."},{"issue":"39","key":"2026090312092519400_cit41","doi-asserted-by":"publisher","first-page":"16587","DOI":"10.1021\/jacs.0c04911","article-title":"Open and Closed Radicals:\nLocal Geometry around Unpaired\nElectrons Governs Magic-Angle Spinning Dynamic Nuclear Polarization\nPerformance","volume":"142","author":"Stevanato","year":"2020","journal-title":"J. Am. Chem. 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