Localized, stepwise template growth of functional nanowires from an amino acid-supported framework in a microfluidic chip
Puigmarti-Luis, Josep (Institut de Ciència de Materials de Barcelona)
Rubio Martínez, Marta (Institut Català de Nanociència i Nanotecnologia)
Imaz, Inhar (Institut Català de Nanociència i Nanotecnologia)
Cvetković, Benjamin Z. (Paul Scherrer Institut (Suïssa))
Abad, Llibertat (Institut de Microelectrònica de Barcelona)
Pérez del Pino, Ángel (Institut de Ciència de Materials de Barcelona)
Maspoch, Daniel (Institut Català de Nanociència i Nanotecnologia)
Amabilino, David B. (Institut de Ciència de Materials de Barcelona)

Data:	2014
Resum:	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 clamps can be employed further to integrate the conductive Ag(I)TCNQ nanowire bundles onto electrode arrays located on a surface, hence facilitating the construction of the final functional interfaced systems from solution specifically with no need for postassembly manipulation. This localized self-supported growth of functional matter from an amino acid-based CP shows how sequential localized chemistry in a fluid cell can be used to integrate molecular systems onto device platforms using a chip incorporating microengineered pneumatic tools. The control of clamp pressure and in parallel the variation of relative flow rates of source solutions permit deposition of materials at different locations on a chip that could be useful for device array preparation. The in situ reaction and washing procedures make this approach a powerful one for the fabrication of multicomponent complex nanomaterials using a soft bottom-up approach.
Ajuts:	Ministerio de Ciencia e Innovación CTQ2010-16339 Ministerio de Economía y Competitividad MAT2012-30994 Ministerio de Ciencia e Innovación CTQ2011-16009-E Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-158 Ministerio de Ciencia e Innovación RYC-2011-08071 Ministerio de Ciencia e Innovación RYC-2010-06530 European Commission PCIG-11-GA-2012-32139
Drets:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Publicat a:	ACS nano, Vol. 8, Issue 1 (January 2014) , p. 818-826, ISSN 1936-086X

DOI: 10.1021/nn4054864

Preprint 18 p, 1012.9 KB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats