Journal
ORGANIC LETTERS
Volume 23, Issue 16, Pages 6435-6438Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.1c02255
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Funding
- National Natural Science Foundation of China [21971223, 21772178]
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A novel molecular cage with a shape-persistent cavity wrapped by aromatic rings was successfully synthesized via efficient SNAr reactions. X-ray analysis confirmed the encapsulation of two THF molecules in the central cavity, enabling selective sensing of F- ions in apolar solvent with a visible color change. The addition of CH3OH could reverse the color back to its original state.
An oxa- and aza-calix[4]arene hybrid molecular cage with a large, shape-persistent cavity wrapped by aromatic rings was designed and synthesized via multifold efficient SNAr reactions. X-ray single-crystal analysis revealed that two THF molecules were encapsulated in the central cavity. Selective sensing of F- in apolar solvent leads to naked eye discriminable color change. Addition of CH3OH would recover the color of the molecular cage.
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