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author：

Wu, Q. (Wu, Q..) [1] | Xu, X. (Xu, X..) [2] | Li, X. (Li, X..) [3] | Jiang, H. (Jiang, H..) [4] | Qin, X. (Qin, X..) [5] | Hong, Z. (Hong, Z..) [6] | Chen, X. (Chen, X..) [7] | Yang, Z. (Yang, Z..) [8] | Ou, X. (Ou, X..) [9] | Xie, L. (Xie, L..) [10] | He, Y. (He, Y..) [11] | Han, S. (Han, S..) [12] | Chen, Q. (Chen, Q..) [13] | Yang, H. (Yang, H..) [14]

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Abstract：

Long-lasting　radioluminescence　scintillators　have　recently　attracted　substantial　attention　from　both　research　and　industrial　communities,　primarily　due　to　their　distinctive　capabilities　of　converting　and　storing　X-ray　energy.　However,　determination　of　energy-conversion　kinetics　in　these　nanocrystals　remains　unexplored.　Here　we　present　a　strategy　to　probe　and　unveil　energy-funneling　kinetics　in　NaLuF4:Mn2+/Gd3+　nanocrystal　sublattices　through　Gd3+-driven　microenvironment　engineering　and　Mn2+-mediated　radioluminescence　profiling.　Our　photophysical　studies　reveal　effective　control　of　energy-funneling　kinetics　and　demonstrate　the　tunability　of　electron　trap　depth　ranging　from　0.66　to　0.96　eV,　with　the　corresponding　trap　density　varying　between　2.38×105　and　1.34×107　cm−3.　This　enables　controlled　release　of　captured　electrons　over　durations　spanning　from　seconds　to　30　days.　It　allows　tailorable　emission　wavelength　within　the　range　of　520–580　nm　and　fine-tuning　of　thermally-stimulated　temperature　between　313–403　K.　We　further　utilize　these　scintillators　to　fabricate　high-density,　large-area　scintillation　screens　that　exhibit　a　6-fold　improvement　in　X-ray　sensitivity,　22　lp/mm　high-resolution　X-ray　imaging,　and　a　30-day-long　optical　memory.　This　enables　high-contrast　imaging　of　injured　mice　through　fast　thermally-stimulated　radioluminescence　readout.　These　findings　offer　new　insights　into　the　correlation　of　radioluminescence　dynamics　with　energy-funneling　kinetics,　thereby　contributing　to　the　advancement　of　high-energy　nanophotonic　applications.　©　2024　Wiley-VCH　GmbH.

Keyword：

Electronic traps Energy funneling Nanocrystal scintillators Radioluminescence afterglow X-ray imaging

Community：

  • [ 1 ] [Wu Q.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 2 ] [Xu X.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 3 ] [Li X.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 4 ] [Jiang H.]Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Key Laboratory of Flexible Electronics, Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, 350117, China
  • [ 5 ] [Qin X.]Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Key Laboratory of Flexible Electronics, Fujian Normal University and Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, 350117, China
  • [ 6 ] [Hong Z.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 7 ] [Chen X.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 8 ] [Yang Z.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 9 ] [Ou X.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 10 ] [Xie L.]School of Public Health, Fujian Medical University, Fujian, Fuzhou, 350122, China
  • [ 11 ] [He Y.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 12 ] [Han S.]Institute of Biopharmaceutical and Health Engineering, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
  • [ 13 ] [Chen Q.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 14 ] [Chen Q.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, 350108, China
  • [ 15 ] [Yang H.]New Cornerstone Science Laboratory, MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
  • [ 16 ] [Yang H.]Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, 350108, China

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Source ：

Angewandte Chemie - International Edition

ISSN： 1433-7851

Year： 2024

Issue： 25

Volume： 63

1 6 . 1 0 0

JCR@2023

CAS Journal Grade：1

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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