Journal article

Metal–Phenolic Networks as Tunable Buffering Systems

Jingqu Chen, Shuaijun Pan, Jiajing Zhou, Robert Seidel, Sebastian Beyer, Zhixing Lin, Joseph J Richardson, Frank Caruso

Chemistry of Materials | American Chemical Society (ACS) | Published : 2021

Abstract

The buffering effects displayed by pH‐responsive polymers have recently gained attention in diverse fields such as nanomedicine and water treatment. However, creating libraries of modular and versatile polymers that can be readily integrated within existing materials remains challenging, hence restricting applications inspired by their buffering capacity. Herein, we propose the use of metal–phenolic networks (MPNs) as tunable buffering systems and through mechanistic studies show that their buffering effects are driven by pH‐responsive, multivalent metal–phenolic coordination. Owing to such supramolecular interactions, MPNs exhibit ~2‐fold and 3‐fold higher buffering capacity than polyelectr..

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Grants

Awarded by Australian Research Council Centre of Excellence in Convergent BioNano Science and Technology


Awarded by National Health and Medical Research Council Senior Principal Research Fellowship


Awarded by German Research Foundation (DFG)


Awarded by Chinese University of Hong Kong


Awarded by Helmholtz-Zentrum Berlin


Funding Acknowledgements

This research was conducted and funded by the Australian Research Council Centre of Excellence in Convergent BioNano Science and Technology (project number CE140100036). F.C. acknowledges the award of a National Health and Medical Research Council Senior Principal Research Fellowship (GNT1135806). This work was performed in part at the Materials Characterisation and Fabrication Platform (MCFP) at The University of Melbourne and the Victorian Node of the Australian National Fabrication Facility (ANFF). R.S. acknowledges the German Research Foundation (DFG) for an Emmy-Noether grant (SE 2253/31). S.B. acknowledges the award of grant 4055120 from The Chinese University of Hong Kong. The authors appreciate support from the Helmholtz-Zentrum Berlin for granting beamtime (no. 191-07915-ST) at the U49/2-PGM-1 undulator beamline with the SOL3PES setup at BESSY II and experimental support from Dominik Al-Sabbagh from the Federal Institute for Materials Research and Testing (BAM).