Multicolor ultralong phosphorescence from perovskite-like octahedral α-AlF3

Designing organic fluorescent and phosphorescent materials based on various core fluorophore has gained great attention, but it is unclear whether similar luminescent units exist for inorganic materials. Inspired by the BX 6 octahedral structure of luminescent metal halide perovskites (MHP), here we...

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Bibliographic Details
Published in:Nature communications 2022-09, Vol.13 (1), p.5712-5712, Article 5712
Main Authors: Cao, Peisheng, Zheng, Haoyue, Wu, Peng
Format: Article
Language:English
Subjects:
119/118
639/301/1019
639/638/263
639/638/298
Aluminum
Aluminum chloride
Aluminum fluorides
Cadmium chloride
Color
Emission
Emissions
Excitation
Fluorescence
Gallium oxides
Humanities and Social Sciences
Inorganic materials
Ligands
Metal halides
multidisciplinary
N electrons
Octahedrons
Perovskites
Phosphorescence
Science
Science (multidisciplinary)
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Summary:Designing organic fluorescent and phosphorescent materials based on various core fluorophore has gained great attention, but it is unclear whether similar luminescent units exist for inorganic materials. Inspired by the BX 6 octahedral structure of luminescent metal halide perovskites (MHP), here we propose that the BX 6 octahedron may be a core structure for luminescent inorganic materials. In this regard, excitation-dependent color-tunable phosphorescence is discovered from α-AlF 3 featuring AlF 6 octahedron. Through further exploration of the BX 6 unit by altering the dimension and changing the center metal (B) and ligand (X), luminescence from KAlF 4 , (NH 4 ) 3 AlF 6 , AlCl 3 , Al(OH) 3 , Ga 2 O 3 , InCl 3 , and CdCl 2 are also discovered. The phosphorescence of α-AlF 3 can be ascribed to clusterization-triggered emission, i.e., weak through space interaction of the n electrons of F atoms bring close proximity in the AlF 6 octahedra (inter/intra). These discoveries will deepen the understanding and contribute to further development of BX 6 octahedron-based luminescent materials. Unravelling the origin of emission in luminescent inorganic materials is challenging. Here, the authors report that AlF 6 octahedrons exhibit excitation-dependent color-tunable phosphorescence; structurally related compounds are also luminescent.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-022-33540-1