Probing Bidirectional Plasmon‐Plasmon Coupling‐Induced Hot Charge Carriers in Dual Plasmonic Au/CuS Nanocrystals

Bessel, Patrick; Niebur, André; Kranz, Daniel; Lauth, Jannika; Dorfs, Dirk

doi:10.1002/smll.202206379

Cited by 9 publications

(5 citation statements)

References 44 publications

(93 reference statements)

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“…The CuS-HDA-NFs showed the strongest LSPR absorption in the NIR region (Figure 5b), demonstrating that the strong LSPR effect endowed the high photothermal effect. 52,53 As far as we know, the photothermal conversion efficiency of CuS-HDA-NFs in this work is relatively high among other CuS-based nanomaterials at present (Table S4). To further investigate the photothermal stability of CuS-HDA-NFs, as shown in Figure 5f, the photothermal effect of CuS-HDA-NFs changed very little after five heating−cooling cycles, indicating their excellent photothermal stability, which is of great significance in subsequent applications.…”

Section: Effect Of Reaction Parameters On Product Morphologymentioning

confidence: 82%

Fatty Amine-Mediated Synthesis of Hierarchical Copper Sulfide Nanoflowers for Efficient NIR-II Photothermal Conversion and Antibacterial Performance

Jiao,

Wu,

Wang

et al. 2023

Langmuir

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Non-noble metal photothermal materials have recently attracted increasing attention as unique alternatives to noble metal-based ones due to advantages like earth abundance, cost-effectiveness, and large-scale application capability. In this study, hierarchical copper sulfide (CuS) nanostructures with tunable flower-like morphologies and dimensional sizes are prepared via a fatty amine-mediated one-pot polyol synthesis. In particular, the addition of fatty amines induces a significant decrease in the overall particle size and lamellar thickness, and their morphologies and sizes could be tuned using different types of fatty amines. The dense stacking of nanosheets with limited sizes in the form of such a unique hierarchical architecture facilitates the interactions of the electromagnetic fields between adjacent nanoplates and enables the creation of abundant hot-spot regions, thus, benefiting the enhanced second near-infrared (NIR-II) light absorptions. The optimized CuS nanoflowers exhibit a photothermal conversion efficiency of 37.6%, realizing a temperature increase of nearly 50 °C within 10 min under 1064 nm laser irradiations at a power density of 1 W cm–2. They also exhibit broad-spectrum antibacterial activity, rendering them promising candidates for combating a spectrum of bacterial infections. The present study offers a feasible strategy to generate nanosheet-based hierarchical CuS nanostructures and validates their promising use in photothermal conversion, which could find important use in NIR-II photothermal therapy.

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Section: Effect Of Reaction Parameters On Product Morphologymentioning

confidence: 82%

Fatty Amine-Mediated Synthesis of Hierarchical Copper Sulfide Nanoflowers for Efficient NIR-II Photothermal Conversion and Antibacterial Performance

Jiao,

Wu,

Wang

et al. 2023

Langmuir

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“…In order to further improve the sensitivity of the ECL method, a glassy carbon electrode deposited electrochemically with Au nanoparticles (depAu/GCE) was used for the assembly of hairpin DNA, which was inspired by the localized surface plasmon resonance (LSPR) effect of noble metals such as Au, Ag, and Pt . The LSPR is a strong photon-driven coherent oscillation of surface-conducted electrons and occurs under appropriate light excitation on the surface of plasmonic materials. − This effect has been used to improve the biosensing performance for the detection of pancreatic cancer exosomes . Here, human papilloma virus subtype (HPV-16) DNA, which is closely related to cervical cancer pathogenesis, , was used as a target model.…”

Section: Introductionmentioning

confidence: 99%

Regulation of Target-activated CRISPR/Cas12a on Surface Binding of Polymer Dots for Sensitive Electrochemiluminescence DNA Analysis

et al. 2023

Anal. Chem.

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Polymer dots (Pdots) have emerged as a type of attractive electrochemiluminescence (ECL) emitter. However, the low ECL efficiency severely limits their practicability. In this work, we develop a sensitive ECL biosensing strategy for the detection of human papilloma virus subtype (HPV-16) DNA by using target-activated CRISPR/Cas12a to regulate the binding of Pdots-DNA to biosensor and local surface plasmon resonance (LSPR) effect of electrochemically deposited Au nanoparticles (depAuNPs) to enhance the ECL emission of Pdots bound on biosensor. The biosensor is prepared by simply assembling hairpin DNA on depAuNPs modified electrode. In the presence of target DNA, the designed specific CRISPR/Cas12a can be activated to digest single-stranded assistant DNA, which decreases the amount of hairpin DNA opened by assistant DNA to bind Pdots-DNA on the biosensor surface, thus reduces the ECL emission. The integration of target DNA-triggered catalysis and the LSPR effect of depAuNPs greatly improves the sensitivity of ECL analysis. Using HPV-16 DNA as a target model, the proposed method shows a limit of detection (LOD) of 3.2 fM at a signal-to-noise ratio of 3 and a detectable concentration range of 5.0 fM to 50 pM. The high sensitivity, excellent selectivity, good testing stability, and acceptable fabrication reproducibility of the designed ECL biosensing strategy demonstrate its potential application in DNA bioanalysis.

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“…32–37 Among them, gold (Au) is widely selected as the other metal because of its inherent chemical stability and unique localized surface plasmon resonance (LSPR) response. 38–40 In particular, the LSPR of Au can generally boost the reactivity of catalysts due to the photoelectron reservoir, hot electron injection, photothermal effect, etc. 41–43…”

Section: Introductionmentioning

confidence: 99%

“…[32][33][34][35][36][37] Among them, gold (Au) is widely selected as the other metal because of its inherent chemical stability and unique localized surface plasmon resonance (LSPR) response. [38][39][40] In particular, the LSPR of Au can generally boost the reactivity of catalysts due to the photoelectron reservoir, hot electron injection, photothermal effect, etc. [41][42][43] The electrocatalytic activity of nanomaterials is not only highly reliant on their chemical composition but also signicantly inuenced by their morphology.…”

Section: Introductionmentioning

confidence: 99%

The trimetallic AuAgPt nanowires for light-enhanced formic acid electrolysis

Zhang,

Wang,

Tian

et al. 2023

J. Mater. Chem. A

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Probing Bidirectional Plasmon‐Plasmon Coupling‐Induced Hot Charge Carriers in Dual Plasmonic Au/CuS Nanocrystals

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202206379.

Cited by 9 publications

References 44 publications

Fatty Amine-Mediated Synthesis of Hierarchical Copper Sulfide Nanoflowers for Efficient NIR-II Photothermal Conversion and Antibacterial Performance

Fatty Amine-Mediated Synthesis of Hierarchical Copper Sulfide Nanoflowers for Efficient NIR-II Photothermal Conversion and Antibacterial Performance

Regulation of Target-activated CRISPR/Cas12a on Surface Binding of Polymer Dots for Sensitive Electrochemiluminescence DNA Analysis

The trimetallic AuAgPt nanowires for light-enhanced formic acid electrolysis

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