One-pot synthesis of multipod Au-Cu nanocrystals with tunable branching for efficient photothermal treatment against multidrug-resistant bacteria

Min, Yuanyuan; Wu, Shiyue; Li, Wen; Ma, Yanyun; Wang, Yi; Zhang, Pu; Zheng, Yiqun

doi:10.1016/j.jallcom.2023.172935

Cited by 6 publications

(6 citation statements)

References 45 publications

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“…(f) Photothermal images of PPMP exposed to 1064 nm laser radiation (1 W/cm 2 ) for different times. (g) Comparison of photothermal conversion efficiency of some photothermal material which the abscissa represents time (2020–2024). ,− …”

Section: Resultsmentioning

confidence: 99%

Advancing NIR-II Photothermal Antibacterial Capability of Polydopamine Nanoparticles through Iron-Doped Molybdenum Oxide Functionalization

Fang,

Chang,

Jia

et al. 2024

ACS Appl. Nano Mater.

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Polydopamine (PDA) exhibits admirable photothermal properties and biocompatibility for biomedical applications; however, its near-infrared (NIR-II) absorption and antibacterial performance remain insufficient. Herein, we introduced Fe-doped molybdenum oxide (MoFeO x ) functionalized PDA composites exhibiting robust NIR absorption, reactive oxygen species (ROS) generation, and glutathione (GSH) depletion, thereby achieving a synergistic photothermal therapy/chemodynamic antibacterial effect. Polyethylenimine (PEI) served as the interlayer to bind MoFeO x onto the surface of PDA through electrostatic interaction. Compared with pure PDA, the nanoparticles demonstrated a 145% improvement in photothermal efficiency in the NIR-II range (1064 nm) when incorporating only 2.2% MoFeO x . This was attributed to the generation of electron "donor" and "acceptor" within the material, resulting in a reduction in the energy band gap and enhanced electron migration, as characterized by ultraviolet photoelectron spectroscopy (UPS). The nanoparticles exhibited synergistic therapeutic effects on E. coli and S. aureus through photothermal/chemodynamic therapy. This work offers an alternative methodology for improving the photothermal performance of PDA and designing synergistic antibacterial materials.

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Section: Resultsmentioning

confidence: 99%

Advancing NIR-II Photothermal Antibacterial Capability of Polydopamine Nanoparticles through Iron-Doped Molybdenum Oxide Functionalization

Fang,

Chang,

Jia

et al. 2024

ACS Appl. Nano Mater.

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“…Typically, an aqueous solution containing HAuCl 4 (20 mM, 0.15 mL), CuCl 2 (100 mM, 0.3 mL), and glucose (100 mM, 2.8 mL), and OLA (10.5 μL) were mixed with 14 mL of H 2 O in a capped vial. 26 The mixture was stirred thoroughly at room temperature for 5 min before being placed in an oil bath. After reacting for 30 min at 100 °C, the solution was centrifuged at a rate of 16,000 r/min for 10 min.…”

Section: Synthesis Of Aucu Nanomultipods (Nmps)mentioning

confidence: 99%

Gold–Silver Hybrid Nanostructures for Efficient Near-Infrared Photothermal Conversion: Core–Shell Configuration of Multipod and Hollow Cage

Min,

Kong,

et al. 2024

J. Phys. Chem. C

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Gold−silver hybrid nanostructures have emerged as promising candidates for efficient near-infrared (NIR) photothermal conversion due to their unique optical and electronic properties. In this study, we report on the synthesis and characterization of gold−silver core−shell nanostructures with Au multipods as the core and Ag hollow cage as the shell, exhibiting strong absorption in the NIR region, which is attributed to the coupled localized surface plasmon resonance (LSPR) effect. Benefiting from its large surface area and porous structure, an optimized photothermal conversion efficiency of 68.5% is achieved, evaluated using a water suspension under an 808 nm laser at a power density of 1.0 W cm −2 . The photothermal stability was also investigated, revealing good durability after multiple cycles of heating and cooling. Our study demonstrates the potential of gold−silver core−shell hybrid nanostructures involving both multipods and hollow cages for efficient NIR photothermal conversion applications. These findings pave the way for further optimization of these nanostructures for various biomedical and industrial applications.

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“…25,26 For example, the combination of Au and Cu based on the localized surface plasmon resonance (LSPR), effectively improved the η of Au-based nanomaterials. 27,28 Under illumination, plasma nanoparticles can absorb light within a certain wavelength range, inducing LSPR and causing electronic oscillations. The energy absorbed by plasma nanoparticles is mainly released through the generation of phonons (heat).…”

Section: ■ Introductionmentioning

confidence: 99%

“…(iii) Ultrasensitivity and high signal-to-noise ratio may be easily achieved through the high photothermal conversion efficiency (η) of signal labels . Furthermore, plasmonic metal nanomaterials with efficient photothermal conversion have been widely synthesized, making them instrumental in various applications. , For example, the combination of Au and Cu based on the localized surface plasmon resonance (LSPR), effectively improved the η of Au-based nanomaterials. , Under illumination, plasma nanoparticles can absorb light within a certain wavelength range, inducing LSPR and causing electronic oscillations. The energy absorbed by plasma nanoparticles is mainly released through the generation of phonons (heat) .…”

Section: Introductionmentioning

confidence: 99%

Layer-By-Layer Designed Spark-Type AuCuPt Alloy with Robust Broadband Absorption to Enhance Sensitivity in Flexible Detection of Estriol by a Lateral Flow Immunoassay

Wu,

Yin,

Cheng

et al. 2024

Anal. Chem.

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One-pot synthesis of multipod Au-Cu nanocrystals with tunable branching for efficient photothermal treatment against multidrug-resistant bacteria

Cited by 6 publications

References 45 publications

Advancing NIR-II Photothermal Antibacterial Capability of Polydopamine Nanoparticles through Iron-Doped Molybdenum Oxide Functionalization

Advancing NIR-II Photothermal Antibacterial Capability of Polydopamine Nanoparticles through Iron-Doped Molybdenum Oxide Functionalization

Gold–Silver Hybrid Nanostructures for Efficient Near-Infrared Photothermal Conversion: Core–Shell Configuration of Multipod and Hollow Cage

Layer-By-Layer Designed Spark-Type AuCuPt Alloy with Robust Broadband Absorption to Enhance Sensitivity in Flexible Detection of Estriol by a Lateral Flow Immunoassay

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