Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 34, Pages 31421-31426Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b11872
Keywords
metal-organic framework; homochiral; oriented film; layer by layer; liquid-phase epitaxial growth; circularly polarized luminescence; enantioselective adsorption
Funding
- National Natural Science Foundation of China [21601189, 21872148, 21871050]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2018339]
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Development of chiral metal-organic frameworks (MOFs) for circularly polarized luminescence (CPL) is a challenging but important task. In this work, we report a first example of azapyrene-based chiral MOF thin films [Zn(2)Cam(2)DAP](n) grown on functionalized substrates (named SURchirMOF-4) for CPL property. By using a liquid-phase epitaxial layer-by-layer method, the resulted SURchirMOF-4 was constructed from chiral camphoric acid and 2,7-diazapyrene ligand, which has high orientation and homogeneity. The circular dichroism, CPL, and enantioselective adsorption results show that SURchirMOE-4 has strong chirality and CPL property as well as good enantioselective adsorption toward enantiomers of methyl-lactate. The synthesis of azapyrene-based chiral MOF thin films not only represents an ideal model for studying the enantioselective adsorption, but also will be a valuable approach for development of the chiral thin film exhibiting CPL property.
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