An ultrastable Ti-based metallocalixarene nanocage cluster with photocatalytic amine oxidation activity

Polyhedral metallocalixarene nanocage clusters based on pure Ti(iv) ions are to our knowledge unknown hitherto. Herein we report the first Ti(iv)-based metallocalixarene nanocage cluster by assembling a [Ti13O14] cage with six t-butylcalix[4]arene molecules. Notably, the cluster exhibits extraordinary stability in high-concentration acid/alkali solutions and can act as a stable photocatalyst to catalyze the oxidation of ammonia to imines.

Automated summary

In this study, we report a metallocalixarene nanocage cluster based on Ti(Ⅳ) ions, which exhibits remarkable stability and can act as a stable photocatalyst for the oxidation of ammonia to imines in high-concentration acid/alkali solutions.