Locally pH controlled and directed growth of supramolecular gel microshapes using electrocatalytic nanoparticles

Controlled localization of platinum nanoparticles (Pt NPs) at a solid support assisted by a polarized liquid-liquid interface is reported. Electrocatalytic water oxidation resulted in local pH modulation followed by the directed self-assembly of a dibenzoyl- l -cystine hydrogelator forming a structu...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2019-07, Vol.55 (62), p.992-995
Main Authors: Lakshminarayanan, Vasudevan, Poltorak, Lukasz, Bosma, Duco, Sudhölter, Ernst J. R, van Esch, Jan H, Mendes, Eduardo
Format: Article
Language:English
Subjects:
Cystine
Dichloroethane
Gels
Hydrogels
Nanoparticles
Organic salts
Oxidation
Platinum
Self-assembly
Supramolecular compounds
X ray photoelectron spectroscopy
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Summary:Controlled localization of platinum nanoparticles (Pt NPs) at a solid support assisted by a polarized liquid-liquid interface is reported. Electrocatalytic water oxidation resulted in local pH modulation followed by the directed self-assembly of a dibenzoyl- l -cystine hydrogelator forming a structured hydrogel retaining the shape of the Pt NP deposit. Micro-shapes of supramolecular hydrogels composed of oriented fibres were grown from locally deposited electrocatalytic Pt NPs after electrochemical pH modulation.
ISSN:1359-7345
1364-548X
DOI:10.1039/c9cc04238e