Supramolecular spectral/visual detection of urinary polyamines through synergetic/competitive complexation with γ-CD and CB[7]

A supramolecular strategy for detecting the concentration of polyamines has been established through competitive/synergetic complexation among polyamines, CB[7], γ-CD, and pyrene derivatives, which allows for convenient, rapid, and high throughput spectral/visual detection of the concentration of urinary polyamines based on the switching on/off of the pyrene excimer fluorescence.

A vapochromic strategy for ammonia sensing based on a bipyridinium constructed porous framework

A vapochromic strategy has been developed for ammonia sensing through the competitive complexation of ammonia and an enhanced charge transfer effect.

A copillar[5]arene-based fluorescence “on–off–on” sensor is applied in sequential recognition of an iron cation and a fluoride anion

A copillar[5]arene-based [c2]daisy-chain dimer is applied in sequential detection of Fe3+ and F− through a competitive complexation reaction.

Synthesis and ROMP of new sulfobetaine and carboxybetaine norbornene

The synthesis of novel norbornene based polyzwitterions via ring opening metathesis polymerization (ROMP) is present. Trifluoracetic acid (TFA) was used as a solvent to provide a homogenous medium for the polymerization reaction of sulfobetaines with the commercially available Hoveyda-Grubbs’ initiator. In order to prevent the competitive complexation via carboxylate functional group of the ruthenium metal center, we carried out the controlled polymerization of ethyl protected carboxybetaines monomers.

Bridged-cyclodextrin supramolecular hydrogels: host–guest interaction between a cyclodextrin dimer and adamantyl substituted poly(acrylate)s

Tunable biocompatible hydrogels are prepared by competitive complexation between a beta-cyclodextrin dimer and adamantyl substituted poly(acrylate)s with various tether lengths.