Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 44, Pages 13803-13807Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201608413
Keywords
chelates; coordination chemistry; gels; organic-inorganic hybrid composites; titanium
Categories
Funding
- Australian Research Council (ARC) under the Australian Laureate Fellowship Scheme [FL120100030]
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology [CE140100036]
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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.
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