One‐Step Electrodeposition of Polyallylamine‐Functionalized Gold Nanodendrites and Their Application in Sensing

Li, Pan; Tan, Huachun; Yang, Jie; Wei, Shaohua; Cai, Chenxin; Chen, Yu; Lee, Jongmin

doi:10.1002/cplu.201500072

Cited by 5 publications

(2 citation statements)

References 43 publications

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“…Consequently, NPs and morphologically complex nanostructures could be coated homogeneously with PEs. Some examples include NPs made of Au, 123 Al, 124 ZnO, 125 and charged PS beads, 126 as well as nanoporous anodized Al oxide, 127 Au nanoflowers, 128 nanodendrites, 129 and even hydrogels. 130 The PE surface functionalization strategy has established new forms of control for molecular self-assembly with direct consequences for the substrate applicability.…”

Section: Polyelectrolyte Adsorptionmentioning

confidence: 99%

Functionalized Polyelectrolytes for Bioengineered Interfaces and Biosensing Applications

Movilli

Huskens

2020

Organic Materials

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The possibility of tuning the chemical moieties and their density plays a fundamental role in targeting surface-confined molecular structures and their functionalities at macro and nanoscale levels. Such interfacial control is crucial for engineered coating formation and biorecognition purposes, where the type and density of ligands/receptors at the surface affect the overall binding affinities and the device performance. Together with the well-established selfassembled monolayers, a surface modification approach based on polyelectrolytes (PEs) has gained importance to provide desired characteristics at the substrate interface. This review presents the innovations of functional PEs, modified in a preceding synthetic step, and their wide applicability in functional (a)biotic substrates. Examples of 2D and 3D architectures made by modified PEs are reviewed in relation with the reactive groups grafted to the PE backbones. The main focus lies on the strategy to use modified PEs to form bioengineered coatings for orthogonally anchoring biological entities, manufacturing biocidal/antifouling films, and their combinations in functional biosensing applications. Figure 4 (a) PLL grafted with PEG, PMOXA, PEOXA, and PMOZI antifouling moieties, and (b) the residual adsorbed dry thickness from human serum. Reprinted and adapted with permission from Ref. 153.Figure 11 Efficiency of ligand-specific internalization by macrophages for differently functionalized interfaces of PLGA-covered particles. Type of modified PEs used, from left to right: PLL-PEG, PLL-PEG-RGD, and PLL-PEG-RDG (nonbinding). Adapted with permission from Ref. 266.

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Section: Polyelectrolyte Adsorptionmentioning

confidence: 99%

Functionalized Polyelectrolytes for Bioengineered Interfaces and Biosensing Applications

Movilli

Huskens

2020

Organic Materials

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“…For gold nanostructures synthesis, different methods are applied, including seeding, templating, electrodeposition, and wet chemical methods. Among these methods, the electrodeposition method is especially attractive owing to its more facile and eco-friendly preparation process [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Novel Highly Sensitive and Selective Immunosensor for Botulinum Neurotoxin Serotype A Based on an Effective Platform of Electrosynthesized Gold Nanodendrites/Chitosan Nanoparticles

Sorouri

Bagheri

Afkhami

et al. 2017

Sensors

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In this work, a novel nanocomposite consisting of electrosynthesized gold nanodendrites and chitosan nanoparticles (AuNDs/CSNPs) has been prepared to fabricate an impedimetric immunosensor based on a screen printed carbon electrode (SPCE) for the rapid and sensitive immunoassay of botulinum neurotoxin A (BoNT/A). BoNT/A polyclonal antibody was immobilized on the nanocomposite-modified SPCE for the signal amplification. The structure of the prepared nanocomposite was investigated by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The charge transfer resistance (RCT) changes were used to detect BoNT/A as the specific immuno-interactions at the immunosensor surface that efficiently limited the electron transfer of Fe(CN)63−/4− as a redox probe at pH = 7.4. A linear relationship was observed between the %∆RCT and the concentration logarithm of BoNT/A within the range of 0.2 to 230 pg·mL−1 with a detection limit (S/N = 3) of 0.15 pg·mL−1. The practical applicability of the proposed sensor was examined by evaluating the detection of BoNT/A in milk and serum samples with satisfactory recoveries. Therefore, the prepared immunosensor holds great promise for the fast, simple and sensitive detection of BoNT/A in various real samples.

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Fractal Growth Regulation and Mechanism of Copper Dendrite by Micro‐point Electrode Electrodeposition

Li,

Wu,

Wang

et al. 2024

ChemistrySelect

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The behavior of fractal growth based on copper metal was examined by micro‐point electrode electrodeposition. On this basis, the process and morphological characteristic of Cu fractal growth can be controlled by changing the electrodeposition time, current and concentration of Cu2+. The growth of snowflake Cu dendrites is confined to the two‐dimensional plane of the paper base to monitor the fractal structural changes. The electrodeposition process of snowflake Cu dendrites is deeply regulated by exploring the changing trend of fractal dimension. To further understand the fractal growth mechanism of Cu, the electro‐driven centripetal migration and random migration of ions are introduced in the traditional diffusion‐limited aggregation model. The simulated fractal patterns successfully correspond with the experimental results. The results are helpful to explore the fractal growth characteristics and dynamic mechanism of the electrodeposited copper dendrites, which lay a foundation for controlling the growth of the electrodeposited metal dendrites.

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One‐Step Electrodeposition of Polyallylamine‐Functionalized Gold Nanodendrites and Their Application in Sensing

Cited by 5 publications

References 43 publications

Functionalized Polyelectrolytes for Bioengineered Interfaces and Biosensing Applications

Functionalized Polyelectrolytes for Bioengineered Interfaces and Biosensing Applications

Fabrication of a Novel Highly Sensitive and Selective Immunosensor for Botulinum Neurotoxin Serotype A Based on an Effective Platform of Electrosynthesized Gold Nanodendrites/Chitosan Nanoparticles

Fractal Growth Regulation and Mechanism of Copper Dendrite by Micro‐point Electrode Electrodeposition

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