Benzene, toluene and pyridine are widely used as essential raw materials in industry and laboratory research, with stringent purity requirements. Herein, we show that solid double-cavity host nor-seco-cucurbit-[10]uril (ns-Q[10]) functions as an efficient adsorption separator for pyridine; benzene and toluene can be obtained in > 99.9 % purity by this method. Thermal removal of pyridine from ns-Q[10]•Py 2 allows 10 separation cycles without erosion of performance. The geometry of the ns-Q[10]•Py 2 ternary complex was established by single-crystal X-ray diffraction methods. The ns-Q[10] cage facilitates the removal of pyridine from toluene and benzene, with > 99.9 % purity for the separated compounds.

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Fluorescent nitrogen and fluorine doped carbon dots (CDs) were prepared by a hydrothermal method using levofloxacin (LVFX) and cucurbit[6]uril (Q[6]) as the nitrogen and carbon source, respectively. Decomposition of LVFX...