ON/OFF switching of silicon wafer electrochemistry by pH-responsive polymer brushes

Panzarasa, Guido; Dübner, Matthias; Pifferi, V.; Soliveri, G.; Padeste, Celestino

doi:10.1039/c6tc01822j

Cited by 16 publications

(15 citation statements)

References 54 publications

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“…This approach has been used to functionalize planar substrates as well as particulate or porous surfaces such as nanoparticles, silicon wafers or hydrogels with pH-responsive polyelectrolytes. [54][55][56] Polyelectrolytes can also be polymers of natural origin such as pectin, chitosan or alginate which are of great interest due to their abundance, biodegradability and biocompatibility. [57] These polymers are found in specific organisms as proteins, carbohydrates, nucleic acid, and membrane constituents.…”

Section: Ph-responsive Polymers and Their Propertiesmentioning

confidence: 99%

pH-Responsive Electrospun Nanofibers and Their Applications

et al. 2021

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Electrospun nanofibrous membranes offer superior properties over other polymeric membranes not only due to their high membrane porosity but also due to their high surface-to-volume ratio. A plethora of available polymers and post-modification methods allow the incorporation of "smart" responsiveness in fiber membranes. The pHresponsive property is achieved using polymers from the class of polyelectrolytes, which contain pH-dependent functional groups on their polymeric backbone. Electrospinning macroscopic membranes using polyelectrolytes earned considerable interest for biomedical and environmental applications due to the possibility to trigger chemical and physical changes of the membrane (swelling, wettability, degradation) in response to environmental pH-changes. Here, we review recent advancements in the field of electrospinning of pHresponsive nanofiber materials. Starting with the chemical background of pH-responsive polymers at the molecular level, we highlight the material-property transformation upon pH-change at the macroscopic membrane level and, finally, we provide an overview of recent applications of pH-responsive fiber membranes.

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Section: Ph-responsive Polymers and Their Propertiesmentioning

confidence: 99%

pH-Responsive Electrospun Nanofibers and Their Applications

et al. 2021

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“…Many other pH-responsive polymer brush systems have also been reported so far. [130][131][132]144] Apart from these examples, responsive polymer brush-coated nanomaterials are also used for detection of temperature change, [129] electrical potential change, [145] and organic solvents. [134] Glucose is one of the most popular target analytes by responsive polymer brush-based sensors.…”

Section: Responsive Polymer Brushes In Biosensing and Detectionmentioning

confidence: 99%

Responsive Polymer Brush Design and Emerging Applications for Nanotheranostics

Wang

et al. 2020

Adv Healthcare Materials

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Responsive polymer brushes are a category of polymer brushes that are capable of conformational and chemical changes in response to external stimuli. They offer unique opportunities for the control of bio−nano interactions due to the precise control of chemical and structural parameters such as the brush thickness, density, chemistry, and architecture. The design of responsive brushes at the surface of nanomaterials for theranostic applications has developed rapidly. These coatings can be generated from a very broad range of nanomaterials, without compromising their physical, photophysical, and imaging properties. Although the use of responsive brushes for nanotheranostic remains in its early stages, in this review, the aim is to present how the systems developed to date can be combined to control sensing, imaging, and controlled delivery of therapeutics. The recent developments for such design and associated methods for the synthesis of responsive brushes are discussed. The responsive behaviors of homo polymer brushes and brushes with more complex architectures are briefly reviewed, before the applications of responsive brushes as smart delivery systems are discussed. Finally, the recent work is summarized on the use of responsive polymer brushes as novel biosensors and diagnostic tools for the detection of analytes and biomarkers.

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“…Design possibilities have been enriched by the introduction of controlled radical polymerization techniques, such as nitroxide-mediated radical polymerization (NMP), reversible addition fragmentation chain transfer (RAFT) and atom transfer radical polymerization (ATRP) [69,70]. Polymer brushes have since then been exploited for developing functional surfaces with tunable properties in response to external stimuli [71][72][73][74][75][76][77][78][79][80][81].…”

Section: Self-oscillating Polymer Brushesmentioning

confidence: 99%

Oscillating Reactions Meet Polymers at Interfaces

2020

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Chemo-mechanical phenomena, including oscillations and peristaltic motions, are widespread in nature—just think of heartbeats—thanks to the ability of living organisms to convert directly chemical energy into mechanical work. Their imitation with artificial systems is still an open challenge. Chemical clocks and oscillators (such as the popular Belousov–Zhabotinsky (BZ) reaction) are reaction networks characterized by the emergence of peculiar spatiotemporal dynamics. Their application to polymers at interfaces (grafted chains, layer-by-layer assemblies, and polymer brushes) offers great opportunities for developing novel smart biomimetic materials. Despite the wide field of potential applications, limited research has been carried out so far. Here, we aim to showcase the state-of-the-art of this fascinating field of investigation, highlighting the potential for future developments and providing a personal outlook.

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ON/OFF switching of silicon wafer electrochemistry by pH-responsive polymer brushes

Abstract: Grafting-from of poly(methacrylic acid) brushes enables pH-controlled switching of silicon wafer electrochemistry, making possible the design of new electrochemical hybrid devices.

Cited by 16 publications

References 54 publications

pH-Responsive Electrospun Nanofibers and Their Applications

pH-Responsive Electrospun Nanofibers and Their Applications

Responsive Polymer Brush Design and Emerging Applications for Nanotheranostics

Oscillating Reactions Meet Polymers at Interfaces

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