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Title: Dynamic liquid-liquid interface: applying a spinning interfacial microreactor to actively converge biphasic reactants for the enhanced interfacial reaction
Authors: Ng, Li Shiuan
Chong, Carice
Lok, Xin Yi
Pereira, Veronica
Ang, Zhi Zhong
Han, Xuemei
Li, Haitao
Lee, Hiang Kwee
Keywords: Engineering::Chemical engineering
Issue Date: 2022
Source: Ng, L. S., Chong, C., Lok, X. Y., Pereira, V., Ang, Z. Z., Han, X., Li, H. & Lee, H. K. (2022). Dynamic liquid-liquid interface: applying a spinning interfacial microreactor to actively converge biphasic reactants for the enhanced interfacial reaction. ACS Applied Materials and Interfaces, 14(39), 45005-45012.
Project: RS13/20 
Journal: ACS Applied Materials and Interfaces 
Abstract: A liquid-liquid interfacial reaction combines reactants with large polarity disparity to achieve greener and more efficient chemistry that is otherwise challenging in traditional single-phase systems. However, current interfacial approaches suffer from the need for a large amount of solvent/reactant/emulsifier and poor reaction performance arising from intrinsic thermodynamic constraints. Herein, we achieve an efficient interfacial reaction by creating a magnetic-responsive, microscale liquid-liquid interface and exploit its dynamic spinning motion to generate vortex-like hydrodynamic flows that rapidly converge biphasic reactants to the point-of-reaction. Notably, the spinning of this functional interface at 800 rpm boosts the reaction efficiency and its apparent equilibrium constant by > 500-fold and 105-fold, respectively, higher than conventional methods that utilize bulk and/or non-dynamic liquid interfaces, even with external mechanical stirring. By driving reaction equilibrium toward favorable product formation, our unique design offers enormous opportunities to realize efficient multiphasic reactions crucial for diverse applications in chemical synthesis, environmental remediation, and even molecular recycling.
ISSN: 1944-8244
DOI: 10.1021/acsami.2c12015
Schools: School of Chemistry, Chemical Engineering and Biotechnology 
Organisations: Institute of Materials Research and Engineering, A*STAR
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, copyright © 2022 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
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