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DTSTART:20250101T000000
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DTSTART;TZID=UTC:20260616T150000
DTEND;TZID=UTC:20260616T160000
DTSTAMP:20260616T093522Z
CREATED:20260306T183038Z
LAST-MODIFIED:20260616T093522Z
UID:1790-1781622000-1781625600@www.globalnmr.org
SUMMARY:Yao Fu
DESCRIPTION:From Cryogenic to Room Temperature: Advances in DNP-MAS for\nMaterials Characterization \nThis presentation highlights recent advances in Dynamic Nuclear\nPolarization (DNP)-enhanced solid-state NMR spanning temperatures from\ncryogenic (30-100 K) to ambient conditions. At cryogenic temperatures\, cross-\neffect DNP was applied to a range of material systems\, including SiO₂\nnanoparticle-polymer composites\, conductive mesoporous polymers\, and the\nmetal-organic framework (MOF) UiO-66. In UiO-66\, DNP-enhanced NMR\nrevealed previously unrecognized water-induced structural rearrangements\, in\nwhich water molecules reversibly replace coordinating linkers to form\nhydrogen-bond-stabilized dangling groups. To overcome limitations associated\nwith exogenous polarizing agents and low-temperature operation\, room-\ntemperature Overhauser DNP was explored in trityl radical thin films relevant\nto OLED technologies. Efficient polarization transfer and site-resolved\nmeasurements of electron delocalization were achieved under ambient\nconditions. Together\, these studies illustrate the evolution of DNP methodologies\nacross a broad temperature range and highlight their growing potential for\ninvestigating increasingly complex and technologically relevant material\nsystems. \n8:00 AM California or 11:00 AM Boston or 5:00 PM Paris or 8:30 PM Delhi
URL:https://www.globalnmr.org/upcoming-discussions/yao-fu/
ATTACH;FMTTYPE=image/jpeg:https://www.globalnmr.org/wp-content/uploads/2026/03/Yao-Fu.jpg
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