Formation of a Au/Au<sub>9</sub>Ga<sub>4</sub> Alloy Nanoshell on a Bacterial Surface through Galvanic Displacement Reaction for High-Contrast Imaging

Singh, Amanpreet; Bains, Deepak; Hassen, Walid; Singh, Narinder; Dubowski, Jan J.

doi:10.1021/acsabm.9b00932

Cited by 7 publications

(14 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the first conjugated polymer sensor was reported in the 1990s, this sensing platform has advanced more than two decades, with an explosion of research in this sector noted in the previous 10 years [ 107 ]. For instance, water-soluble conjugated polymers with ionic side chains are known as conjugated polyelectrolytes (CPEs) [ 108 , 109 , 110 , 111 , 112 ], and they have garnered attention in the past decade mainly because of their application as sensors, energy converters, and antimicrobials [ 113 , 114 , 115 , 116 ]. For example, Tan et al [ 117 ] developed and synthesized four anionic CPEs with a poly(paraphenylene ethynylene) (PPE, Figure 14 a) backbone but varied pendant ionic side chains.…”

Section: Polymers Containing Fluorophoresmentioning

confidence: 99%

Fluorescent Polymers Conspectus

Ahumada

Borkowska

2022

Polymers

View full text Add to dashboard Cite

The development of luminescent materials is critical to humankind. The Nobel Prizes awarded in 2008 and 2010 for research on the development of green fluorescent proteins and super-resolved fluorescence imaging are proof of this (2014). Fluorescent probes, smart polymer machines, fluorescent chemosensors, fluorescence molecular thermometers, fluorescent imaging, drug delivery carriers, and other applications make fluorescent polymers (FPs) exciting materials. Two major branches can be distinguished in the field: (1) macromolecules with fluorophores in their structure and (2) aggregation-induced emission (AIE) FPs. In the first, the polymer (which may be conjugated) contains a fluorophore, conferring photoluminescent properties to the final material, offering tunable structures, robust mechanical properties, and low detection limits in sensing applications when compared to small-molecule or inorganic luminescent materials. In the latter, AIE FPs use a novel mode of fluorescence dependent on the aggregation state. AIE FP intra- and intermolecular interactions confer synergistic effects, improving their properties and performance over small molecules aggregation-induced, emission-based fluorescent materials (AIEgens). Despite their outstanding advantages (over classic polymers) of high emission efficiency, signal amplification, good processability, and multiple functionalization, AIE polymers have received less attention. This review examines some of the most significant advances in the broad field of FPs over the last six years, concluding with a general outlook and discussion of future challenges to promote advancements in these promising materials that can serve as a springboard for future innovation in the field.

show abstract

Section: Polymers Containing Fluorophoresmentioning

confidence: 99%

Fluorescent Polymers Conspectus

Ahumada

Borkowska

2022

Polymers

View full text Add to dashboard Cite

show abstract

“…For instance, galvanic displacement processes are used for metallization and nano structuring of semiconductor surfaces. [4][5][6][7][8][9] A surface-treatment process for depositing Zn on Al or Mg alloys parts by galvanic displacement reaction is used prior to application of functional coatings on this alloys. [10] Metal nanostructures fabricated via galvanic displacement are used in production of catalysts, [11][12][13][14][15][16][17][18][19][20][21] sensors, [8,9,22] lithium-ion batteries.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6][7][8][9] A surface-treatment process for depositing Zn on Al or Mg alloys parts by galvanic displacement reaction is used prior to application of functional coatings on this alloys. [10] Metal nanostructures fabricated via galvanic displacement are used in production of catalysts, [11][12][13][14][15][16][17][18][19][20][21] sensors, [8,9,22] lithium-ion batteries. [23] Galvanic displacement allowing to obtain ultrathin layers is known as "surface limited redox displacement".…”

Section: Introductionmentioning

confidence: 99%

“…A higher driving force of contact exchange is created by pairs of metals with a significant potential difference. For instance, galvanic displacement processes are used for metallization and nano structuring of semiconductor surfaces [4–9] . A surface‐treatment process for depositing Zn on Al or Mg alloys parts by galvanic displacement reaction is used prior to application of functional coatings on this alloys [10] .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nonlinear Potential Scanning as a Novel Approach to Calculation of the Time Variable Galvanic Displacement Reaction Rate

Patsay

Maizelis

2022

ChemElectroChem

View full text Add to dashboard Cite

A novel approach to estimate the rate of galvanic displacement reaction was proposed, which allowed the most accurate calculation of the displacement process rate at each moment of time by exact reproducing the open‐circuit conditions. We applied the method for mild steel samples immersed in pyrophosphate‐citrate electrolyte for Cu−Zn alloy electrodeposition. The time dependences of parameters of steel‐electrolyte interaction are obtained. The rate of steel dissolution in open circuit conditions increases by 1.6–2.9 times as compared with corrosion in pyrophosphate‐citrate medium. The results of our approach were verified by an independent experiment using anodic stripping of the obtained deposits.

show abstract

“…Therefore, in continuation of our work on ILs, , herein, we have developed an ionic liquid@silver-based nanocomposite-loaded hierarchical hydrophobic aluminum (Al) substrate for the inhibition of bacteria and their adhesion. The prepared ionic liquid@silver nanocomposites have been fabricated onto the Al substrate in a hierarchical manner and evaluated for their antibacterial potential.…”

Section: Introductionmentioning

confidence: 99%

Development of an Ionic Liquid@Metal-Based Nanocomposite-Loaded Hierarchical Hydrophobic Surface to the Aluminum Substrate for Antibacterial Properties

Bains

Singh

Kaur

et al. 2020

ACS Appl. Bio Mater.

Self Cite

View full text Add to dashboard Cite

Designing biomaterials and substrates possessing antibacterial properties is a growing field nowadays. In this context, we have developed benzimidazolium ionic liquids ILs-1(a−d)-based metal hybrid nanocomposites using various metals such as silver (Ag), gold (Au), and copper (Cu), which were fully characterized by various techniques. Their morphology, elemental composition, crystallinity, and size were studied by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy, powder X-ray diffraction, and dynamic light scattering, respectively. Further, the prepared ionic liquids ILs-1(a−d) and ionic liquid@metal composites were screened for their antibacterial potential against Grampositive and Gram-negative pathogenic microorganisms via the colony forming unit assay, and their minimum inhibitory concentrations (MICs) were also evaluated. The results obtained from preliminary antibacterial screening demonstrated that these ionic liquid@metal nanocomposites IL-1d@M (M = Ag, Cu, and Au) exhibited potent antibacterial activity in comparison to the ionic liquids ILs-1(a−d). In particular, the ionic liquid@silver nanocomposites (IL-1d@Ag) showed the most potent activity against both E. coli and S. aureus bacterial strains with MIC = 12 ± 2 and 08 ± 2 μg/mL, respectively. The mechanism of action for antibacterial activity of IL-1d@Ag nanocomposites was investigated through generation of 1 O 2 (ROS), whereas the morphology of treated pathogenic bacteria was examined through atomic force microscopy and SEM. Furthermore, to utilize this developed material IL-1d@Ag in biomedical applications, the prepared ionic liquid material was fabricated onto a microstructured aluminum (Al) substrate with hierarchically arranged functionalities, and the modified surface was characterized and also evaluated for antibacterial activity. Moreover, the hydrophobicity of the material coated onto the Al substrate was also measured by static water contact angle measurement, which reveals its improved hydrophobic character. Thus, the developed hierarchical hydrophobic coating material possessing long-term antibacterial activity on an Al substrate may minimize the wetting by biological secretions and also prevent the substrate from corrosion.

show abstract

Formation of a Au/Au₉Ga₄ Alloy Nanoshell on a Bacterial Surface through Galvanic Displacement Reaction for High-Contrast Imaging

Cited by 7 publications

References 68 publications

Fluorescent Polymers Conspectus

Fluorescent Polymers Conspectus

Nonlinear Potential Scanning as a Novel Approach to Calculation of the Time Variable Galvanic Displacement Reaction Rate

Development of an Ionic Liquid@Metal-Based Nanocomposite-Loaded Hierarchical Hydrophobic Surface to the Aluminum Substrate for Antibacterial Properties

Contact Info

Product

Resources

About

Formation of a Au/Au9Ga4 Alloy Nanoshell on a Bacterial Surface through Galvanic Displacement Reaction for High-Contrast Imaging

Cited by 7 publications

References 68 publications

Fluorescent Polymers Conspectus

Fluorescent Polymers Conspectus

Nonlinear Potential Scanning as a Novel Approach to Calculation of the Time Variable Galvanic Displacement Reaction Rate

Development of an Ionic Liquid@Metal-Based Nanocomposite-Loaded Hierarchical Hydrophobic Surface to the Aluminum Substrate for Antibacterial Properties

Contact Info

Product

Resources

About

Formation of a Au/Au₉Ga₄ Alloy Nanoshell on a Bacterial Surface through Galvanic Displacement Reaction for High-Contrast Imaging