Journal
ADVANCED MATERIALS
Volume 32, Issue 38, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202002914
Keywords
chirality and energy transfer; full-color circularly polarized luminescence; helical channel; metal-organic framework; white-circularly polarized light-emitting diode
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Funding
- National Science Fund for Distinguished Young Scholars [21825106]
- National Natural Science Foundation of China [21975065, 21671175, 51773088]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [164100510005]
- Program for Innovative Research Team (in Science and Technology) in Universities of Henan Province [19IRTSTHN022]
- Zhengzhou University
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The host-guest chemistry of metal-organic frameworks (MOFs) has enabled the derivation of numerous new functionalities. However, intrinsically chiral MOFs (CMOFs) with helical channels have not been used to realize crystalline circularly polarized luminescence (CPL) materials. Herein, enantiomeric pairs of MOF crystals are reported, where achiral fluorophores adhere to the inner surface of helical channels via biology-like H-bonds and hence inherit the helicity of the host MOFs, eventually amplifying the luminescence dissymmetry factor (g(lum)) of the hostl/d-CMOF (+/- 1.50 x 10(-3)) to a maximum of +/- 0.0115 for the compositel/d-CMOF superset of fluorophores.l/d-CMOF superset of fluorophores in pairs generate bright color-tunable CPL and almost ideal white CPL (0.33, 0.32) with a record-high photoluminescence quantum yield of approximate to 30%, which are further assembled into a white circularly polarized light-emitting diode. The present strategy opens a new avenue for propagating the chirality of MOFs to realize universal chiroptical materials.
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