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Highly luminescent scintillating hetero-ligand MOF nanocrystals with engineered Stokes shift for photonic applications
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SYSNO ASEP 0558985 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Highly luminescent scintillating hetero-ligand MOF nanocrystals with engineered Stokes shift for photonic applications Author(s) Perego, J. (IT)
Bezuidenhout, C.X. (IT)
Villa, Irene (FZU-D) ORCID
Cova, F. (IT)
Crapanzano, R. (IT)
Frank, I. (CH)
Pagano, F. (CH)
Kratochwill, N. (AT)
Auffray, E. (CH)
Bracco, S. (IT)
Vedda, A. (IT)
Dujardin, C. (FR)
Sozzani, P. E. (IT)
Meinardi, F. (IT)
Comotti, A. (IT)
Monguzzi, A. (IT)Number of authors 16 Article number 3504 Source Title Nature Communications. - : Nature Publishing Group
Roč. 13, č. 1 (2022)Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords molecular self-assembly ; optical materials and structures ; organic–inorganic nanostructures Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000812556700016 EID SCOPUS 85132157671 DOI 10.1038/s41467-022-31163-0 Annotation We obtain high efficiency luminescence with significant Stokes shift by exploiting fluorescent conjugated acene building blocks arranged in nanocrystals. Two ligands of equal molecular length and connectivity, yet complementary electronic properties, are co-assembled by zirconium oxy-hydroxy clusters, generating crystalline hetero-ligand metal-organic framework (MOF) nanocrystals. The diffusion of singlet excitons within the MOF and the matching of ligands absorption and emission properties enables an ultrafast activation of the low energy emission in the 100 ps time scale. The hybrid nanocrystals show a fluorescence quantum efficiency of ~60% and a Stokes shift as large as 750 meV (~6000 cm−1), which suppresses the emission reabsorption also in bulk devices. The fabricated prototypal nanocomposite fast scintillator shows benchmark performances which compete with those of some inorganic and organic commercial systems. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2023 Electronic address https://hdl.handle.net/11104/0332503
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