Imperial College London
Dr Richard Matthews

DrRichardMatthews

Faculty of Engineering, Department of Chemical Engineering

Academic Visitor
 
 
 
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Contact

 

richard.matthews

 
 
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Location

 

B323Bone BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Clarke:2021:10.1039/d0ta11821d,
author = {Clarke, CJ and Matthews, RP and Brogan, APS and Hallett, JP},
doi = {10.1039/d0ta11821d},
journal = {Journal of Materials Chemistry A},
pages = {4679--4686},
title = {Controlling surface chemistry and mechanical properties of metal ionogels through Lewis acidity and basicity},
url = {http://dx.doi.org/10.1039/d0ta11821d},
volume = {9},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Ionogels are emerging as soft materials with remarkable physical properties that can be tuned to suit application requirements. The liquid component—ionic liquids—are effectively involatile, which provides new opportunities to explore gel surfaces with UHV based analytical techniques. Here, we exploit the highly solvating nature of ionic liquids to fabricate poly(ethylene glycol) based ionogels with high concentrations of zinc, and then investigate their surfaces to show that tunability extends beyond the bulk to the interface. A unique relationship between Lewis acidity and basicity and the surface concentration of metal was revealed. Chemical state analysis and molecular dynamics showed that Lewis acidic metals templated polymers to give new architectures reduced brittleness and increased flexibility, while Lewis basic metals improved polymer uniformity and strengthened gels. Therefore, bulk structure, surface composition, and metal speciation were all found to be intimately related and dependent upon the coordination strengths of ionic liquid anions. Importantly, the highly controllable surface and structural properties of metal ionogels allow fine-tuning across a broad design space, which presents new opportunities for gel based applications.
AU  - Clarke,CJ
AU  - Matthews,RP
AU  - Brogan,APS
AU  - Hallett,JP
DO  - 10.1039/d0ta11821d
EP  - 4686
PY  - 2021///
SN  - 2050-7488
SP  - 4679
TI  - Controlling surface chemistry and mechanical properties of metal ionogels through Lewis acidity and basicity
T2  - Journal of Materials Chemistry A
UR  - http://dx.doi.org/10.1039/d0ta11821d
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000624755900012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://pubs.rsc.org/en/content/articlelanding/2021/TA/D0TA11821D#!divAbstract
UR  - http://hdl.handle.net/10044/1/87756
VL  - 9
ER  -
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