Metal-Phenolic Supramolecular Gelation

Md Arifur Rahim; Mattias Björnmalm; Tomoya Suma; Matthew Faria; Yi Ju; Kristian Kempe; Markus Müllner; Hirotaka Ejima; Anthony D Stickland; Frank Caruso

doi:10.1002/anie.201608413

Metal-Phenolic Supramolecular Gelation

Angew Chem Int Ed Engl. 2016 Oct 24;55(44):13803-13807. doi: 10.1002/anie.201608413. Epub 2016 Sep 30.

Authors

Md Arifur Rahim¹, Mattias Björnmalm¹, Tomoya Suma¹, Matthew Faria¹, Yi Ju¹, Kristian Kempe^{1

2}, Markus Müllner^{1

3}, Hirotaka Ejima^{1

4}, Anthony D Stickland⁵, Frank Caruso⁶

Affiliations

¹ ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia.
² ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia.
³ School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia.
⁴ Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, Japan.
⁵ Particulate Fluids Processing Centre, Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia.
⁶ ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, and the Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria, 3010, Australia. fcaruso@unimelb.edu.au.

PMID: 27689940
DOI: 10.1002/anie.201608413

Abstract

Materials assembled by coordination interactions between naturally abundant polyphenols and metals are of interest for a wide range of applications, including crystallization, catalysis, and drug delivery. Such an interest has led to the development of thin films with tunable, dynamic properties, however, creating bulk materials remains a challenge. Reported here is a class of metallogels formed by direct gelation between inexpensive, naturally abundant tannic acid and group(IV) metal ions. The metallogels exhibit diverse properties, including self-healing and transparency, and can be doped with various materials by in situ co-gelation. The robustness and flexibility, combined with the ease, low cost, and scalability of the coordination-driven assembly process make these metallogels potential candidates for chemical, biomedical, and environmental applications.

Keywords: chelates; coordination chemistry; gels; organic-inorganic hybrid composites; titanium.

Publication types

Research Support, Non-U.S. Gov't