Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 1, Pages 1533-1538Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b18183
Keywords
MOF; helical nanomaterial; electrochemical chiral recognition; Pen enantiomers
Funding
- National Key Scientific Instrument
- Equipment Development Project of China [21627809]
- National Natural Science Foundation of China [21605058, 21575050, 21375047]
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For the first time, we report the formation of a chiral MOF-based helical nanomaterial (h-HDGA@ZIF-67) through arranging zeolitic imidazolate framework (ZIF-67) nanocrystals on helical L-glutamic acid terminated bolaamphiphile (h-HDGA) via a facile process at room temperature. The self-assembly leads to the chiral function of the ZIF-67 from an achiral ligand. The h-HDGA@ZIF-67 served as a new type of electrochemical sensing interface for recognizing and quantifying Pen enantiomers that realize significant enantioselectivity, satisfactory stability, and reproducibility. The synergetic effect from ZIF-67 nanocrystals on h-HDGA and stereoselectivity of h-HDGA@ZIF-67 lead to the excellent enantioselectivity. The present strategy showed the first example of a chiral MOF-based supramolecule helical nanomaterial, presenting high enantioselectivity for electrochemical enantiomeric determination.
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