A cyclodextrin polymer as supramolecular matrix for scalable green photooxygenation of hydrophobic substrates in homogeneous phase

We are proud of the fruit of our most recent collaboration with Consiglio Nazionale delle Ricerche and Semmelweis University.

Complexation of the hydrophobic substrates within a hydrophilic cyclodextrin polymer allowed their photooxygenation in a homogeneous aqueous environment. These results hold great potential for the launch of CD polymers both as reaction vessels for green, homogeneous photocatalysis and as a drug delivery carrier of oxygen-releasing agents in tissues.

Marco Agnes, Arianna Mazza, Eszter KalydiSzabolcs BéniMilo MalangaIlse Manet

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Cyclodextrin as a green anti-agglomerate agent in oil-water emulsion containing asphalt

University of Science and Technology Beijing presents a very unique use of CDs:
Anti-agglomerate agents (AAs) are a cost-effective method to prevent hydrates from clogging submarine oil/gas pipelines. However, conventional AAs such as Span 80 is not applicable in oil/gas pipelines rich in asphalt because asphalt is easy to occupy the binding sites on the water droplet surface. On the other hand, CDs show excellent anti-agglomerate characteristics in oil–water systems containing asphalt by forming stable hydrogen bonds with water molecules. Compared with Span 80, the initial contact time between water droplets and hydrate is delayed by five times after adding CD molecules. CD-asphalt interaction prevents water droplets from spreading on the hydrate surface by maintaining the stability of the emulsion.
The unique properties of CD provide a molecular basis for developing more green and efficient AAs.

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