Localized, stepwise template growth of functional nanowires from an amino acid-supported framework in a microfluidic chip

ACS Nano
Josep Puigmartí-LuisDavid B Amabilino

Abstract

A spatially controlled synthesis of nanowire bundles of the functional crystalline coordination polymer (CP) Ag(I)TCNQ (tetracyanoquinodimethane) from previously fabricated and trapped monovalent silver CP (Ag(I)Cys (cysteine)) using a room-temperature microfluidic-assisted templated growth method is demonstrated. The incorporation of microengineered pneumatic clamps in a two-layer polydimethylsiloxane-based (PDMS) microfluidic platform was used. Apart from guiding the formation of the Ag(I)Cys coordination polymer, this microfluidic approach enables a local trapping of the in situ synthesized structures with a simple pneumatic clamp actuation. This method not only enables continuous and multiple chemical events to be conducted upon the trapped structures, but the excellent fluid handling ensures a precise chemical activation of the amino acid-supported framework in a position controlled by interface and clamp location that leads to a site-specific growth of Ag(I)TCNQ nanowire bundles. The synthesis is conducted stepwise starting with Ag(I)Cys CPs, going through silver metal, and back to a functional CP (Ag(I)TCNQ); that is, a novel microfluidic controlled ligand exchange (CP → NP → CP) is presented. Additionally, the pneumatic...Continue Reading

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Citations

May 8, 2014·Chemical Society Reviews·Paolo FalcaroMark J Styles
Jun 17, 2014·ACS Applied Materials & Interfaces·Samuel J AdamsZoe Pikramenou
Jul 1, 2020·Advanced Science·Semih SevimJosep Puigmartí-Luis

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