Grafting PDMAEMA brushes onto graphene oxide for fabricating Ag nanosheet-assembled microspheres as SERS substrates

Li, Xi-Yong; Li, Xuan; Wang, Wenqin

doi:10.1016/j.cplett.2023.140296

Cited by 4 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of bearing initiator functionalities on substrate surfaces, the polymer brush prepared by this method has high grafting density. Depending on the initiators, the technique can be divided into several types: conventional free radical polymerization [ 98 , 99 ], active free radical polymerization [ 100 , 101 ], self-assembly microsphere system [ 102 , 103 ] or glow discharge treatment [ 104 ].…”

Section: Spherical Polyelectrolyte Brushesmentioning

confidence: 99%

Advances and Prospects in the Study of Spherical Polyelectrolyte Brushes as a Dopant for Conducting Polymers

2024

Molecules

View full text Add to dashboard Cite

Owing to their special structure and excellent physical and chemical properties, conducting polymers have attracted increasing attention in materials science. In recent years, tremendous efforts have been devoted to improving the comprehensive performance of conducting polymers by using the technique of “doping.” Spherical polyelectrolyte brushes (SPBs) bearing polyelectrolyte chains grafted densely to the surface of core particles have the potential to be novel dopant of conducting polymers not only because of their spherical structure, high grafting density and high charge density, but also due to the possibility of their being applied in printed electronics. This review first presents a summary of the general dopants of conducting polymers. Meanwhile, conducting polymers doped with spherical polyelectrolyte brushes (SPBs) is highlighted, including the preparation, characterization, performance and doping mechanism. It is demonstrated that comprehensive performance of conducting polymers has improved with the addition of SPBs, which act as template and dopant in the synthesis of composites. Furthermore, the applications and future developments of conductive composites are also briefly reviewed and proposed, which would draw more attention to this field.

show abstract

Section: Spherical Polyelectrolyte Brushesmentioning

confidence: 99%

Advances and Prospects in the Study of Spherical Polyelectrolyte Brushes as a Dopant for Conducting Polymers

2024

Molecules

View full text Add to dashboard Cite

show abstract

“…31 32 The resulting platforms exhibit ultrasensitivity in SERS detection of 4-aminothiophenol as low as 10 −13 M. In a very recent work, Wang and co-workers fabricated a SERS platform using poly(2-(dimethylamino)ethyl methacrylate) brush-grafted graphene oxide films. 33 After Ag nanosheet decoration, the platforms demonstrated enhanced SERS performance. Considering these advancements in the literature on polymer brushes, most focus on plasmonic particle growth or immobilization on the platforms, while phase transition of the polymer brushes does not contribute to the hot-spot manipulations.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Feng et al also demonstrated the growth of flower-like Ag mesoparticles with tunable size and shapes on poly(4-vinylpyridine) brush-grafted graphene oxide films . The resulting platforms exhibit ultrasensitivity in SERS detection of 4-aminothiophenol as low as 10 –13 M. In a very recent work, Wang and co-workers fabricated a SERS platform using poly(2-(dimethylamino)ethyl methacrylate) brush-grafted graphene oxide films . After Ag nanosheet decoration, the platforms demonstrated enhanced SERS performance.…”

Section: Introductionmentioning

confidence: 99%

Thermoresponsive Polymer Brush-Decorated 3-D Plasmonic Gold Nanorod Arrays as an Effective Plasmonic Sensing Platform

Hukum

Çaykara

Demirel

2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Molecular sensing based on plasmonic materials is of great interest not only for basic scientific research but also for real-life applications. For plasmonic sensing, tunable hot-spot generation, in which the electromagnetic field is maximized, plays a key role. Herein, we developed a platform consisting of a thermoresponsive polymer brush with colloidal plasmonic particles and 3-D ordered/vertically aligned gold nanorod (AuNR) arrays for surface-enhanced Raman spectroscopy (SERS) applications. Poly(di(ethylene glycol) methyl ether methacrylate) brushes were synthesized via the interface-mediated reversible addition fragmentation chain transfer polymerization method. 3-D AuNR arrays were also fabricated by the oblique angle physical vapor deposition method. Highdensity hot-spot generation on the platforms was achieved by reducing the distance between the plasmonic particles and the underlying AuNR array as a result of phase transition of the polymer brushes. The design and optimization of such a platform will pave the way for molecular detection applications in a broad range of fields such as medicine, environmental protection, food safety, and homeland security.

show abstract

Biocompatible nanocomposite for scaffolds in tissue engineering: A breakthrough discovery for regenerative therapy

Praseetha,

Alexander,

Gangadhar

et al. 2024

Polymers for Advanced Techs

View full text Add to dashboard Cite

By promoting tissue regeneration, porous nano‐scaffolds offer improved chances for the maintenance, repair, and enhancement of damaged tissues and organ functioning. In this study, the nanosilica extract obtained from the agricultural waste, that is, rice husk after surface modification shows higher hydrophobicity in the hexamethyldisilazane and methyltrimethoxysilane‐modified nanosilica and hydrophilic nature in 3‐aminopropyl triethoxysilane‐modified nanosilica. Fourier transform infrared spectroscopy results reveal the functional groups exist in the scaffold and its surface morphology was evaluated by Field emission scanning electron microscope/energy dispersive X‐ray analysis which shows a cross‐network structure that could impart the proper cell adhesion. The presence of amorphous nanosilica in ultrapure form was confirmed using X‐ray diffraction analysis where a broad peak was obtained in the range of 15°–40°. The crystallization phase of the hybrid scaffold shows 2θ values obtained at 22.6°, 28.7°, and 40.6°. The graph thus obtained confirms that the material used is 3‐aminopropyl‐triethoxysilane‐modified silk/silica nanocomposite. The decomposition rates and temperature of the composite were analyzed using the thermogravimetry/differential thermal technique. The antibacterial activity of the hybrid scaffolds and silk and silica shows the metabolic pathways were not disrupted for both Gram‐positive and ‐negative microbes. Cell cytotoxicity analysis proved that the electrospun hybrid scaffold was nontoxic to L929 cells and promoted cell adhesion and growth. The cells were highly proliferated onto the surface layers in a regular systematic pattern thus proving that these scaffolds were suitable for bone regeneration applications. Hence these economically viable scaffolds turn to be biocompatible and are promising as a novel product for cell culture regneration realted to therapy.

show abstract

Grafting PDMAEMA brushes onto graphene oxide for fabricating Ag nanosheet-assembled microspheres as SERS substrates

Cited by 4 publications

References 37 publications

Advances and Prospects in the Study of Spherical Polyelectrolyte Brushes as a Dopant for Conducting Polymers

Advances and Prospects in the Study of Spherical Polyelectrolyte Brushes as a Dopant for Conducting Polymers

Thermoresponsive Polymer Brush-Decorated 3-D Plasmonic Gold Nanorod Arrays as an Effective Plasmonic Sensing Platform

Biocompatible nanocomposite for scaffolds in tissue engineering: A breakthrough discovery for regenerative therapy

Contact Info

Product

Resources

About