pH-Controlled Electrochemical Deposition of Polyelectrolyte Complex Films

Sadman, Kazi; Wang, Qifeng; Chen, Shawn H.; Delgado, David E.; Shull, Kenneth R.

doi:10.1021/acs.langmuir.6b04491

Cited by 18 publications

(23 citation statements)

References 60 publications

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“…The pH-triggered assembly of polyelectrolyte complexes from H + sensitive polyelectrolytes with electrochemical pH-gradients was performed [103]. Nanoscale polyelectrolyte multilayers were assembled from charge-shifting polyelectrolytes with electrochemically generated protons (or hydroxide anion) on the electrode surface [104,105]. Hydrolysis of anionic dimethyl maleic-modified poly(allylamine) (PAHd) or citraconic-modified poly(allylamine) PAHc to cationic poly(allylamine) (PAH) was performed with an electrochemical proton gradient.…”

Section: Ph-sensitivitymentioning

confidence: 99%

Chemical Systems for Life Science

Nikolaev¹,

Ryzhkov²,

Gershenson³

et al. 2021

Rev Adv Mater Tech

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The use of dynamic, adaptive materials with feedback control is a tendency of the past decade. Life sciences and medicine require materials with the controlled and responsive assembly of various components on the scales from molecular to macroscopic and even robotics. The main idea of this review is the use of synthetic systems as regulatory networks that facilitate the integration of chemical and biological materials. The synthetic systems, which are inspired by biochemical regulatory networks, help synthetic material to adapt to environmentand to interact with living matter cooperatively. The first step in realizing this concept is designing simple model systems. The simplicity means that the system should contain a minimal number of components but should be robust and sustainable to perform the required functions through logic operations and feedback loops. Here we suggest specific examples of robust systems for the selected functionality: compartmentalized signaling cascades, computation with light-induced chemical gradients andadvanced biomimetic mixed organic-inorganic materials, and self-regulation in chemical-biological systems. The main challenges for the given examples are discussed, and future prospects of logic operation with chemical systems are provided.

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Section: Ph-sensitivitymentioning

confidence: 99%

Chemical Systems for Life Science

Nikolaev¹,

Ryzhkov²,

Gershenson³

et al. 2021

Rev Adv Mater Tech

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“…electropolymerization), and in these cases, the resulting film is generally localized on the electrode surface. However, there are several indirect electron transfer mechanisms that generate diffusible species or gradients that act over longer distances (μm to mm from the electrode surface) to trigger thin film or hydrogel formation [117,[136][137][138]. In these cases, the electrochemical currents indirectly transduce the electrical inputs into the generation of macromolecular and macroscopic structures (note: such indirect mechanisms require redox reactions at the electrode surface and diffusible chemical species that shuttle electrons to/from the electrode).…”

Section: Electrical Current Quantifies Electrochemical Reactionsmentioning

confidence: 99%

Electrobiofabrication: electrically based fabrication with biologically derived materials

Kim

et al. 2019

Biofabrication

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While conventional material fabrication methods focus on form and strength to achieve function, the fabrication of material systems for emerging life science applications will need to satisfy a more subtle set of requirements. A common goal for biofabrication is to recapitulate complex biological contexts (e.g. tissue) for applications that range from animal-on-a-chip to regenerative medicine. In these cases, the material systems will need to: (i) present appropriate surface functionalities over a hierarchy of length scales (e.g. molecular features that enable cell adhesion and topographical features that guide differentiation); (ii) provide a suite of mechanobiological cues that promote the emergence of native-like tissue form and function; and (iii) organize structure to control cellular ingress and molecular transport, to enable the development of an interconnected cellular community that is engaged in cell signaling. And these requirements are not likely to be static but will vary over time and space, which will require capabilities of the material systems to dynamically respond, adapt, heal and reconfigure. Here, we review recent advances in the use of electrically based fabrication methods to build material systems from biological macromolecules (e.g. chitosan, alginate, collagen and silk). Electrical signals are especially convenient for fabrication because they can be controllably imposed to promote the electrophoresis, alignment, self-assembly and functionalization of macromolecules to generate

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“…For the chemical method, a chemical reaction must be introduced into the preparation process. It also includes many specific methods, such as anodizing (Zhang et al , 2017), chemical vapor deposition (CVD) (Xie et al , 2017), electrochemical deposition (Sadman et al , 2017), chemical vapor condensed (CVC) (Cha et al ,2016), sol-gel process (Sumida et al , 2017), spraying (Liu et al , 2017), spinning (Zheng et al , 2017), hydrothermal process (Yousefifar et al , 2016), and so on. The physicochemical method incorporates the advantages of both the chemical and physical method, and it is a comprehensive method (Zhang et al , 2013; Holgado et al , 2005).…”

Section: Introductionmentioning

confidence: 99%

The technical support of nanoart: anodization process

Shao-hua

Wang

2019

ACMM

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Purpose The novel structures and properties of nanostructure and nanomaterials give people perfect artistic expression of feeling and sense, then the nanoart discipline is developed and is closely related on the nanotechniques. The many achieved novel nanostructures with strong anti-corrosion prepared by the anodization have been reviewed. The paper would raise public awareness of nanotechnology, nanomaterial and their impact on our lives. Design/methodology/approach Anodization is a very effective and simple technique to form various nanostructures of metal oxide. It includes hard anodization, mild anodization and pulse anodization. Many measures have been introduced anodization process to improve the quality of formed nanostructure and enhance its properties, such as anti-corrosion. Findings The formation mechanism of anodic aluminum oxide (AAO) by using the mild, hard and pulse anodization has been discussed. The pretexture process and many other measures have been taken in mild and hard anodization to improve the regularity of pore array and greatly accelerate the formation rate of AAO. The pulse anodization has been used to prepare the multilayer Y-branched AAO film, which exhibits steady rich and vivid structure colors and gives a very good artistic expression. Furthermore, many other metal oxide nanostructures such as TiO2 and CuO have also been fabricated using the anodization techniques. Originality/value Various nanostructures of metal oxide prepared by anodization have been reviewed and are itself a perfect artwork in mesoscale. Also, many nanostructures have exhibited steady, rich and vivid structure colors and give people a very good artistic expression.

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pH-Controlled Electrochemical Deposition of Polyelectrolyte Complex Films

Cited by 18 publications

References 60 publications

Chemical Systems for Life Science

Chemical Systems for Life Science

Electrobiofabrication: electrically based fabrication with biologically derived materials

The technical support of nanoart: anodization process

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