Plasmonic Au–Cu nanostructures: Synthesis and applications

Mi, Xiaohu; Chen, Huan; Li, Jinping; Qiao, Haifa

doi:10.3389/fchem.2023.1153936

Cited by 6 publications

(4 citation statements)

References 110 publications

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“…17 In general, TiN and Cu-Au NPs are promising to be useful in several fields such as catalysis, light harvesting, optoelectronics, and biotechnologies. 25–30…”

Section: Figurementioning

confidence: 99%

“…17 In general, TiN and Cu-Au NPs are promising to be useful in several fields such as catalysis, light harvesting, optoelectronics, and biotechnologies. [25][26][27][28][29][30] We assess the biotesting LFA-performance of three different NPs (Fig. 1B) and show that inexpensive plasmonic TiN-and Cu@Au-based LFAs perform comparable to Au NPs-based LFAs, in some cases even better.…”

mentioning

confidence: 99%

“…Furthermore, they show a superior photothermal efficiency in solar-induced water evaporation as compared to Au NPs [16]. In general, TiN and Cu-Au NPs are promising to be useful in several fields such as catalysis, light harvesting, optoelectronics, and biotechnologies [26][27][28][29].…”

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confidence: 99%

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Lateral Flow Assays Biotesting by Utilizing Plasmonic Nanoparticles Made of Inexpensive Metals – Replacing Colloidal Gold

Lorca,

Ávalos-Ovando,

Sikeler

et al. 2024

Preprint

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Different kinds of nanoparticles can be conjugated with diverse biomolecular receptors and employed in biosensing to detect a target analyte (biomarkers of infections, cancer markers, etc.) from biological samples. This proven concept was largely used during the COVID-19 pandemic in over-the-counter gold nanoparticles-based paper strip tests. Considering that gold is expensive and is being largely depleted, here we show that novel and less expensive plasmonic counterparts, titanium nitride (TiN) nanoparticles, and copper nanoparticles covered with a gold shell (Cu@Au) perform comparable or better than gold nanoparticles. After functionalization, these novel nanoparticles provide a high signal, efficiency, and specificity when used on paper strip tests. This allows an easy visual determination of the positive signal and the development of more affordable paper-based test strips. Moreover, by conducting the machine learning study, we have shown that the bio-detection with TiN is more accurate than that with gold, demonstrating the advantage of a broadband plasmonic material. The implementation of lateral flow assays based on TiN and Cu@Au nanoparticles promises a drastic cost reduction of this technology and its widespread applications in tasks of biomedical diagnostics, environmental and food safety, security and doping screening.

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“…17 In general, TiN and Cu-Au NPs are promising to be useful in several fields such as catalysis, light harvesting, optoelectronics, and biotechnologies. 25–30…”

Section: Figurementioning

confidence: 99%

mentioning

confidence: 99%

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Lateral Flow Assays Biotesting by Utilizing Plasmonic Nanoparticles Made of Inexpensive Metals – Replacing Colloidal Gold

Lorca,

Ávalos-Ovando,

Sikeler

et al. 2024

Preprint

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show abstract

“…Furthermore, they show a superior photothermal efficiency in solar-induced water evaporation as compared to Au NPs . In general, TiN and Cu–Au NPs are promising to be useful in several fields such as catalysis, light harvesting, optoelectronics, and biotechnologies. − …”

mentioning

confidence: 99%

Lateral Flow Assay Biotesting by Utilizing Plasmonic Nanoparticles Made of Inexpensive Metals─Replacing Colloidal Gold

Bahamondes Lorca,

Ávalos-Ovando,

Sikeler

et al. 2024

Nano Lett.

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Nanoparticles (NPs) can be conjugated with diverse biomolecules and employed in biosensing to detect target analytes in biological samples. This proven concept was primarily used during the COVID-19 pandemic with gold-NP-based lateral flow assays (LFAs). Considering the gold price and its worldwide depletion, here we show that novel plasmonic NPs based on inexpensive metals, titanium nitride (TiN) and copper covered with a gold shell (Cu@Au), perform comparable to or even better than gold nanoparticles. After conjugation, these novel nanoparticles provided high figures of merit for LFA testing, such as high signals and specificity and robust naked-eye signal recognition. Since the main cost of Au NPs in commercial testing kits is the colloidal synthesis, our development with the Cu@Au and the laser-ablation-fabricated TiN NPs is exciting, offering potentially inexpensive plasmonic nanomaterials for various bioapplications. Moreover, our machine learning study showed that biodetection with TiN is more accurate than that with Au.

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Biomimetic Nanomaterials for Osteoarthritis Treatment: Targeting Cartilage, Subchondral Bone, and Synovium

Gong,

Tang,

Dai

et al. 2024

Advanced NanoBiomed Research

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Osteoarthritis (OA) is characterized mainly by articular cartilage loss, subchondral osteosclerosis, and chronic inflammation and involves multiple types of cellular dysfunction and tissue lesions. The rapid development of nanotechnology and materials science has contributed to the application of biomimetic nanomaterials in the biomedical field. By optimizing the composition, hardness, porosity, and drug loading of biomimetic nanomaterials, their unique physicochemical properties drive potential applications in bone repair. This article reviews the present understanding of the physiopathological mechanism and clinical treatment drawbacks of OA and summarizes various types of biomimetic nanomaterials for OA that target lesion sites, such as cartilage, subchondral bone, and synovium, through simulation of the physiological structure and microenvironment. Eventually, the challenges and prospects for the clinical translation of biomimetic nanomaterials are further discussed, with the goal of accessing an effective approach for OA treatment.

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Plasmonic Au–Cu nanostructures: Synthesis and applications

Cited by 6 publications

References 110 publications

Lateral Flow Assays Biotesting by Utilizing Plasmonic Nanoparticles Made of Inexpensive Metals – Replacing Colloidal Gold

Lateral Flow Assays Biotesting by Utilizing Plasmonic Nanoparticles Made of Inexpensive Metals – Replacing Colloidal Gold

Lateral Flow Assay Biotesting by Utilizing Plasmonic Nanoparticles Made of Inexpensive Metals─Replacing Colloidal Gold

Biomimetic Nanomaterials for Osteoarthritis Treatment: Targeting Cartilage, Subchondral Bone, and Synovium

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