Red Room-Temperature Phosphorescence Supramolecular Assemblies Based on Cucurbit[7]uril: Reversible Temperature Stimulation Response and Cell-Specific Silver Ion Imaging.

Solid-state materials with efficient room-temperature phosphorescence (RTP) emission have been widely used in materials science, and organic RTP-emitting systems with heavy-metal doping in aqueous solutions have attracted much attention in recent years. A novel supramolecular interaction was induced by host-guest assembly using cucurbit[7]uril (Q[7]) as the host and brominated naphthalimide phosphor as the guest. This interaction was further enhanced through synergistic chelation stimulated by analytical silver ion complexation.

Metal Cation-Doped -Cucurbit[10]uril: Adsorption of Para-Phenylenediamine.

The separation of phenylenediamine (PDA) isomers is crucial in the field of chemical manufacturing. Herein, we presented a strategy for the separation of PDA isomers (para-phenylenediamine, -PDA; meta-phenylenediamine, -PDA; ortho-phenylenediamine, -PDA) using four supramolecular framework materials of -cucurbit[10]uril (-Q[10]), (1) -Q[10](Cd), (2) -Q[10](Mn), (3) -Q[10](Cu), (4) -Q[10](Pb). Our findings indicated that these supramolecular framework materials of -Q[10] showed remarkable selectivity for para-phenylenediamine (-PDA) in -PDA, -PDA, and -PDA mixtures, respectively.