(Bio)Functionalisation of Metal-Organic Polyhedra by Using Click Chemistry

Jordi Faraudo, Teodor Parella Coll, Daniel Maspoch Comamala, Arnau Carné-Sánchez, Laura Hernández López, Cornelia von Baeckmann, Jordi Martínez-Esaín, Alba Cortés-Martínez, Caterina Caules

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Web of Science)

Abstract

The surface chemistry of Metal-Organic Polyhedra (MOPs) is crucial to their physicochemical properties because it governs how they interact with external substances such as solvents, synthetic organic molecules, metal ions, and even biomolecules. Consequently, the advancement of synthetic methods that facilitate the incorporation of diverse functional groups onto MOP surfaces will significantly broaden the range of properties and potential applications for MOPs. This study describes the use of copper(I)-catalysed, azide-alkyne cycloaddition (CuAAC) click reactions to post-synthetically modify the surface of alkyne-functionalised cuboctahedral MOPs. To this end, a novel Rh(II)-based MOP with 24 available surface alkyne groups was synthesised. Each of the 24 alkyne groups on the surface of the "clickable" Rh-MOP can react with azide-containing molecules at room temperature, without compromising the integrity of the MOP. The wide substrate catalogue and orthogonal nature of CuAAC click chemistry was exploited to densely functionalise MOPs with diverse functional groups, including polymers, carboxylic and phosphonic acids, and even biotin moieties, which retained their recognition capabilities once anchored onto the surface of the MOP.
Original languageEnglish
Article numbere202301945
Number of pages8
JournalChemistry - A European Journal
Volume29
Issue number60
DOIs
Publication statusPublished - 26 Oct 2023

Keywords

  • biofunctionalization
  • click chemistry
  • metal–organic polyhedra
  • recognition
  • surface functionalisation

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