Air-stable plasmonic bubbles as a versatile three-dimensional surface-enhanced Raman scattering platform for bi-directional gas sensing

Leong, Yong Xiang; Koh, Charlynn Sher Lin; Phan‐Quang, Gia Chuong; Tan, Emily Xi; Wong, Zhao Cai; Yew, Wee Liang; Lim, Bao Ying Natalie; Han, Xuemei; Ling, Xing Yi

doi:10.1039/d2cc00597b

Chem. Commun.

2022

DOI: 10.1039/d2cc00597b

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Air-stable plasmonic bubbles as a versatile three-dimensional surface-enhanced Raman scattering platform for bi-directional gas sensing

Yong Xiang Leong

Charlynn Sher Lin Koh

Gia Chuong Phan‐Quang

et al.

Abstract: Harnessing large hotspot volumes is key for enhanced gas-phase surface-enhanced Raman scattering (SERS) sensing. Herein, we introduce versatile, air-stable 3D ‘Plasmonic bubbles’ with bi-directional sensing capabilities. Our Plasmonic bubbles are...

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Cited by 3 publications

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DNA‐encoded plasmonic bubbles aggregating dual‐microRNA SERS signals for cancer diagnosis

Yang,

Lu,

Fang

et al. 2024

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Solid bubbles have expanded the SERS assay toolbox, but their detection performance in biofluids is still hampered by the irrational design of the plasmonic sensing interface. A plasmonic bubble aggregate‐driven DNA‐encoded SERS assay is reported here that enables simultaneous, ultrasensitive, and specific detection of multiple miRNAs in blood samples for accurate cancer diagnosis. In this assay, the buoyancy of plasmonic bubbles allows them to self‐aggregate at a droplet apex for SERS reconfiguration, form single‐layer bubble aggregates with plasmonic nanogaps, and prevent the coffee ring effect during evaporation assembly. Furthermore, DNA‐encoded plasmonic bubbles seamlessly couple with dual‐color catalytic hybridization assembly to amplify the specific miRNA‐responsive Raman signal, and function as both an analyte concentrator and a Raman signal aggregator without external forces. Using these merits, this magnet‐free, portable assay achieves femtomolar dual‐miRNA quantitation with single‐base resolution, simultaneous miRNA detection across four cell lines, and accurate cancer diagnosis (AUC = 1) via analyzing 40 blood samples with machine learning, thus providing a promising tool for clinical diagnosis.

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DNA‐encoded plasmonic bubbles aggregating dual‐microRNA SERS signals for cancer diagnosis

Yang,

Lu,

Fang

et al. 2024

Aggregate

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Laser-Driven Plasmonic Bubble Gold Nanorod Clusters with ∼1 nm Gaps for Highly Sensitive SERS Detection

Yan,

Weng,

Dong

et al. 2024

J. Phys. Chem. C

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Surface-enhanced Raman spectroscopy (SERS) is closely related to the SERS substrate. SERS substrate should not only possess small gaps to generate strongly enhanced hot spots but also facilitate the entry of target molecules into these hot spots. However, the presence of ligands on the substrate can create steric hindrance, potentially impeding the access of target molecules to hot spots. In this study, we assembled a dense gold nanorod (AuNR) cluster with gaps of ∼1 nm, utilizing laser-driven plasmonic bubbles. The AuNR cluster through laser-driven plasmonic bubbles was accompanied by the reduction of the ligands. The AuNR cluster can detect crystal violet solutions at concentrations as low as 10 −12 M and allows for the SERS identification of various molecules. Furthermore, the practical potential of this AuNR cluster was demonstrated by the detection of 10 ppb of paraquat on the tomatoes in situ. This work provides new insights into the assembly of laser-driven plasmonic bubbles with noble metal nanoparticles and their application in the field of SERS.

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Flexible nano-cloth-like Ag cluster@rGO with ultrahigh SERS sensitivity for capture-optimization-detection due to effective molecule–substrate interactions

Cui

et al. 2022

Nanoscale

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Air-stable plasmonic bubbles as a versatile three-dimensional surface-enhanced Raman scattering platform for bi-directional gas sensing

Abstract: Harnessing large hotspot volumes is key for enhanced gas-phase surface-enhanced Raman scattering (SERS) sensing. Herein, we introduce versatile, air-stable 3D ‘Plasmonic bubbles’ with bi-directional sensing capabilities. Our Plasmonic bubbles are...

Cited by 3 publications

References 16 publications

DNA‐encoded plasmonic bubbles aggregating dual‐microRNA SERS signals for cancer diagnosis

DNA‐encoded plasmonic bubbles aggregating dual‐microRNA SERS signals for cancer diagnosis

Laser-Driven Plasmonic Bubble Gold Nanorod Clusters with ∼1 nm Gaps for Highly Sensitive SERS Detection

Flexible nano-cloth-like Ag cluster@rGO with ultrahigh SERS sensitivity for capture-optimization-detection due to effective molecule–substrate interactions

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