Direct SECM Localized Electrografting of Vinylic Monomers on a Conducting Substrate

Grisotto, Federico; Ghorbal, Achraf; Goyer, Cédric; Charlier, Julienne; Palacin, Serge

doi:10.1021/cm101563n

Cited by 27 publications

(23 citation statements)

References 60 publications

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“…Thus, the ''one pot'' procedure, under optimized conditions, can be approximated to the sum of quantitative steps that mimic well the sequential procedure in a thin solution layer against the electrode surface. Since, this original procedure is promising for the local production of diazonium salts from nitro precursors and allows reconsidering the use of diazonium salts for microelectrochemical patterning of surfaces by application of the scanning electrochemical microscopy [28,[43][44][45].…”

Section: E (V)mentioning

confidence: 99%

Carbon surface derivatization by electrochemical reduction of a diazonium salt in situ produced from the nitro precursor

Cougnon

Nguyen

Dabos‐Seignon

et al. 2011

Journal of Electroanalytical Chemistry

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Section: E (V)mentioning

confidence: 99%

Carbon surface derivatization by electrochemical reduction of a diazonium salt in situ produced from the nitro precursor

Cougnon

Nguyen

Dabos‐Seignon

et al. 2011

Journal of Electroanalytical Chemistry

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“…Thus, the challenge resides in designing suitable substrate functionalities as well as patterning techniques to achieve both high site-selectivity and chemoselectivity. However, this approach relies on rather high applied potentials, leading to undefined surface chemistry caused by the formation of undesired reactive side products, [2,6] which are generated at the small tip used as the counter electrode. In particular, the local electrochemical activation of reagents from bulk solution at a microelectrode [1,2] (microreagent mode) has been implemented, for example, for the local generation of bromine [3] or for diazonium salt reduction.…”

Section: Introductionmentioning

confidence: 99%

Scanning Droplet Cell for Chemoselective Patterning through Local Electroactivation of Protected Quinone Monolayers

et al. 2013

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A reagentless strategy for template-free patterning of uniformly inert surfaces is suggested. A layer of p-hydroquinone (HQ) protected by the tert-butyldimethylsilyl (TBDMS) group is electrografted onto glassy carbon electrodes. Chemoselective activation is performed through electrochemically controlled cleavage of the TBDMS group, which yields the redox-active surface-confined quinone moieties. The latter are shown to undergo electrochemically induced Michael addition, which serves for subsequent functionalization of the electrode surface. Patterning of the TBDMS-quinone-modified surface is accomplished by using selective localized cleavage of the protecting group. State-of-the-art direct-mode scanning electrochemical microscopy (SECM) patterning fails to yield the anticipated interfacial reaction; however, the electrochemical scanning droplet cell (SDC) is capable of conducting the localized chemoselective reaction. In a small area, dictated by the dimensions of the droplet, electrochemically induced cleavage of the protecting group can be performed locally to give rise to arrays of active quinone spots. Upon deprotection, the redox signals, attributed to the hydroquinone/benzoquinone couple, provide the first direct evidence for chemoselective electrochemical patterning of sensitive functionalities. Subsequent SECM studies of the resulting modified areas demonstrate spatial control of the proposed patterning technique.

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“…7,33 Results and discussion Our setup is depicted in Fig. This strategy will nd applications in various domains such as microuidics, biodetection and electronics, as extensively mentioned in the literature.…”

Section: Introductionmentioning

confidence: 99%

Local surface modification via confined electrochemical deposition with FluidFM

et al. 2015

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We show how the association of AFM with microfluidics, namely FluidFM, is a valuable approach for the versatile electrochemical creation of patterns having diverse shapes and topologies. Localization of the electrochemical reactions was obtained by confining the electroactive species in the microchannel and dispensing them at a precise position through the aperture of FluidFM probes. The force feedback enabled a gentle approach onto the electrode as well as a gentle contact during both the lithography procedure as well as in situ topographical AFM imaging just before or after deposition. As model systems, we demonstrate electroplating of copper and electrografting of organic moieties by reduction of aryldiazonium salts.

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Direct SECM Localized Electrografting of Vinylic Monomers on a Conducting Substrate

Abstract: International audienc

Cited by 27 publications

References 60 publications

Carbon surface derivatization by electrochemical reduction of a diazonium salt in situ produced from the nitro precursor

Carbon surface derivatization by electrochemical reduction of a diazonium salt in situ produced from the nitro precursor

Scanning Droplet Cell for Chemoselective Patterning through Local Electroactivation of Protected Quinone Monolayers

Local surface modification via confined electrochemical deposition with FluidFM

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