Study on a new cyclodextrin based metal–organic framework with chiral helices

• MOF based on β-CD with the left-handed chiral helical was reported for the first time.
• The inclusion result shows that the inclusion rate using CD-MOF-1 as inclusion materials is higher than that of β-CD.

Staring from β-cyclodextrins and Na salts, a new metal–organic framework with chiral helices, (C42O35H70)2(NaOH)4·H2O (CD-MOF-1), has been successfully synthesized. X-ray diffraction analysis reveals that CD-MOF-1 exhibits a 3D framework with left-handed helical channels running through the structure created by the ligation of Na ions to the primary and secondary faces of the β-cyclodextrins rings. Additionally, inclusion properties of CD-MOF-1 were also studied, and the result shows that the inclusion rate using CD-MOF-1 as inclusion materials is higher than that of β-cyclodextrins, which is expected to become a new type of green crystal material from edible natural products.

The first example of MOF based on β-CD with the left-handed chiral helical was reported, which was constructed by the ligation of Na ions to the primary and secondary faces of the β-CD rings.Figure optionsDownload as PowerPoint slide