Formation of Molecular Gradients on Bipolar Electrodes

Ulrich, Christian; Andersson, Olof; Nyholm, Leif; Björefors, Fredrik

doi:10.1002/ange.200705824

Cited by 44 publications

(28 citation statements)

References 23 publications

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“…When the anodic and cathodic surfaces coexist on the same BPE plane, a potential distribution appears on the BPE. To exploit this phenomenon for material applications, many interesting approaches involving reactions of small substrates being fixed 6,7 or deposited 8-10 on the BPE have been reported. A typical potential distribution is linear and reflects the linearly applied electric field.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of gradient polymer surfaces using bipolar electrochemistry

Inagi

2015

Polym J

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This report focuses on recent developments using bipolar electrochemistry as an effective tool for the fabrication of gradient polymer surfaces. The electrochemical doping and reactions of conducting polymers under an applied potential distribution using bipolar electrodes have been carried out to prepare conducting polymers with composition gradients. Indirect electrolysis using an electrogenerated metal catalyst on bipolar electrodes successfully afforded gradually modified polymer surfaces and gradient polymer brushes using vinyl monomers. The newly designed cylinder bipolar electrode system is available for site-selective applications of electric potentials, which produced electrochemical patterning of conducting polymer films.

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Section: Introductionmentioning

confidence: 99%

Fabrication of gradient polymer surfaces using bipolar electrochemistry

Inagi

2015

Polym J

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“…[18] This concept has been explored in the context of various fields, including analytical chemistry, [19] chemical motion, [20] electronics, [21] and materials science. [22] Whereas BE is usually limited to deposits obtained from electroactive precursors, [23] we have recently reported that insulating materials, including metal oxides and electrophoretic paints, can be generated from non-electroactive precursors. [16] This IBED technique exploits an electrochemically triggered local pH change around the conducting objects, leading to controlled polymerization or precipitation of an insulating deposit, thus significantly extending the diversity of materials that can be prepared.…”

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confidence: 99%

Site‐Selective Synthesis of Janus‐type Metal‐Organic Framework Composites

et al. 2014

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Herein, bipolar electrochemistry is applied in a straightforward way to the site-selective in situ synthesis of metal-organic framework (MOF) structures, which have attracted tremendous interest in recent years because of their significant application potential, ranging from sensing to gas storage and catalysis. The novelty of the presented work is that the deposit can be intentionally confined to a defined area of a substrate without using masks or templates. The intrinsic site-selectivity of bipolar electrochemistry makes it a method of choice to generate, in a highly controlled way, hybrid particles that may have different functionalities combined on the same particle. The wireless nature of electrodeposition allows the potential for mass production of such Janus-type objects.

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“…[1] Recently, Björefors and co-workers successfully created molecular gradients on a bipolar electrode. [2] For example, self-assembled monolayers on gold were converted to a gradient surface by the cathodic desorption of thiols. Reported electrochemical [3] or bipolar [4] patterning has all been based on deposition or desorption of organic/polymeric molecules or inorganic materials involved at the surface of a conducting substrate.…”

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confidence: 99%