Robust and versatile ionic liquid microarrays achieved by microcontact printing

Christian A. Gunawan, Mengchen Ge and Chuan Zhao ()
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Christian A. Gunawan: School of chemistry, The University of New South Wales
Mengchen Ge: School of chemistry, The University of New South Wales
Chuan Zhao: School of chemistry, The University of New South Wales

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Lab-on-a-chip and miniaturized systems have gained significant popularity motivated by marked differences in material performance at the micro-to-nano-scale realm. However, to fully exploit micro-to-nano-scale chemistry, solvent volatility and lack of reproducibility need to be overcome. Here, we combine the non-volatile and versatile nature of ionic liquids with microcontact printing in an attempt to establish a facile protocol for high throughput fabrication of open microreactors and microfluidics. The micropatterned ionic liquid droplets have been demonstrated as electrochemical cells and reactors for microfabrication of metals and charge transfer complexes, substrates for immobilization of proteins and as membrane-free high-performance amperometric gas sensor arrays. The results suggest that miniaturized ionic liquid systems can be used to solve the problems of solvent volatility and slow mass transport in viscous ionic liquids in lab-on-a-chip devices, thus providing a versatile platform for a diverse number of applications.

Date: 2014
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DOI: 10.1038/ncomms4744

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