Covalent Grafting of Coordination Polymers on Surfaces : The Case of Hybrid Valence Tautomeric Interphases
Gonzalez Monje, Pablo (Institut Català de Nanociència i Nanotecnologia)
Novio Vázquez, Fernando (Institut Català de Nanociència i Nanotecnologia)
Ruiz-Molina, Daniel (Institut Català de Nanociència i Nanotecnologia)

Data:	2015
Resum:	We have developed a novel approach for grafting coordination polymers, structured as nanoparticles bearing surface reactive carboxylic groups, to amino-functionalized surfaces through a simple carbodiimide-mediated coupling reaction. As a proof-of-concept to validate our approach, and on the quest for novel hybrid interphases with potential technological applications, we have used valence tautomeric nanoparticles exhibiting spin transition at or around room temperature. SEM and AFM characterization reveal that the nanoparticles were organized chiefly into a single monolayer while X-ray photoelectron spectroscopy (XPS) measurements confirm that the nanoparticles retain a temperature-induced electronic redistribution upon surface anchorage. Our results represent an effective approach towards the challenging manufacture of coordination polymers. CPPs immobilization: A generic approach for immobilizing coordination polymer nanoparticles (CPPs) on gold surfaces is reported. The protocol involves covalent bonding between amino-terminated alkyl chains on the gold surface and carboxylic groups on the CPPs surface. The thickness of the nanoparticle monolayer is comparable to the nanoparticle size. The nanoparticles used exhibit valence tautomerism in bulk and keep this property after surface attachment, as corroborated by X-ray photoelectron spectroscopy (XPS) measurements. Our results represent an effective approach towards the challenging manufacture of coordination polymers.
Ajuts:	Ministerio de Economía y Competitividad MAT2012-38318-C03-02 Ministerio de Economía y Competitividad SEV-2013-0295
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Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	2D assembly ; Coordination polymer ; Nanoparticles ; Spin transition ; Surface assembly ; Valence tautomerism
Publicat a:	Chemistry (Weinheim), Vol. 21, Issue 28 (July 2015) , p. 10094-10099, ISSN 1521-3765

DOI: 10.1002/chem.201500671

Preprint 8 p, 855.0 KB

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