Facile preparation and application of luminescent cucurbit[10]uril-based porous supramolecular frameworks

Cucurbit[n]uril‐Based Supramolecular Frameworks Assembled through Outer‐Surface Interactions

“…cence characteristics displayed distinct responses to different compounds.F or example,QSF 12 adsorbed 8-hydroxyquinoline (FD1)t oy ield as olid with as trong bright blue fluorescence.T he solid responded almost selectively to pyridine by undergoing fluorescence quenching (Figure 12 c,e), whereas QSF 13 adsorbed levofloxacin (FD2)t o give solid FD2@13 with aweak green fluorescence,which was enhanced in ah ighly selective response to ethanol (Figure 12 d,f). [85] 2.2. QSFsA ssembled via Anion-Induced OSIQ Thepositive electrostatic potential outer surface of aQ[n] can interact with the carbonyl oxygen atoms of an adjacent Q[n], but it is more likely to interact with electronegative species.I tc ould, in particular,i nteract with anions through ion-dipole interactions,i ncluding interactions between anions and the methine units,b ridged methylene units,a nd portal carbonyl carbon atoms of the Q[n]m olecule (Figure 13).…”

The Binding Behaviors between Cyclopentanocucurbit[6]uril and Three Amino Acids in the Solid and the Solution Phases

“…Because the hydrophobic cavities of cucurbiturils readily form stable inclusion complexes or rotaxane analogues, molecular capsules, and other supramolecular structures incorporating various organic small molecules, [4][5][6][7] especially in aqueous systems, cucurbituril host-guest chemistry has played a signi cant role in the elds of drug delivery, chemical sensors, and cucurbituril supramolecular self-assembly materials. [8][9][10] Most cucurbiturils show poor solubility in water, except, to some extent, cucurbit [7]uril, which has restricted their applications. The appearance of modi ed cucurbiturils, especially functionalized cucurbiturils with more water-soluble alkyl substituents and derivatives, has attracted ever more attention.…”

The Binding Behaviors between Cyclopentanocucurbit[6]uril and Three Amino Acids in the Solid and the Solution Phases

“…Because the hydrophobic cavities of cucurbiturils readily form stable inclusion complexes or rotaxane analogues, molecular capsules, and other supramolecular structures incorporating various organic small molecules and organic amines, [4][5][6][7] especially in aqueous systems, cucurbituril host-guest chemistry has played a signi cant role in the elds of drug delivery, chemical sensors, and cucurbituril supramolecular self-assembly materials. [8][9][10] Most cucurbiturils show poor solubility in water, except, to some extent, cucurbit [7]uril, which has restricted their applications. The appearance of modi ed cucurbiturils, especially functionalized cucurbiturils with more water-soluble alkyl substituents and derivatives, has attracted ever more attention.…”