Distance-Based Detection of Ag+ with Gold Nanoparticles-Coated Microfluidic Paper

Li, Yulong; Cui, Shuhua; Wen, Cong-Ying; Yu, Jianfeng; Tang, Shiming; Zeng, Jingbin

doi:10.1007/s41664-021-00157-0

Cited by 20 publications

(6 citation statements)

References 34 publications

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“…04-0784). 39 Especially, the Au-WE peaks were not observed in the XRD pattern of CuInS 2 / CoIn 2 S 4 /Au-WE, mainly because the peaks of CuInS 2 /CoIn 2 S 4 overlap a lot with Au-WE. In summary, these crystal characteristics were consistent with the XPS results, which preliminarily certified that the heterostructure on the Au-WE surface incorporated CuInS 2 and CoIn 2 S 4 .…”

Section: ■ Results and Discussionmentioning

confidence: 94%

“…03-0289), another four apparent peaks were detected in the XRD pattern, which were well indexed to the (111), (200), (220), and (311) planes of Au NPs (JCPDS card no. 04-0784) . Especially, the Au-WE peaks were not observed in the XRD pattern of CuInS 2 /CoIn 2 S 4 /Au-WE, mainly because the peaks of CuInS 2 /CoIn 2 S 4 overlap a lot with Au-WE.…”

Section: Resultsmentioning

confidence: 97%

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Photothermal-Reagent-Triggered Visual Thermoresponsive and Quantized Photoelectrochemical Dual-Signal Assay

Yang

et al. 2022

ACS Sens.

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In vitro biosensing chips are urgently needed for early-stage diagnosis and real-time surveillance of epidemic diseases. Herein, a versatile zone with photothermal effects is implanted in the miniature space of a collapsible lab-on-paper photoelectrochemical biosensor for on-site detection of microRNA-141 in body fluids, which can flexibly interconnect the traditional photocurrent signal with functional temperature response. The visualized thermoresponsive results are enhanced by the exciton energy conversion between Fe3O4 nanoparticles (Fe3O4 NPs) and formed Prussian blue nanoparticles under near-infrared irradiation, which not only presents heat energy gradient variations but also generates color changes. Significantly, the controlled release of Fe3O4 NPs is actuated by a target-triggered enzyme assist strand displacement cycle strategy to efficiently improve the accuracy of target temperature signal prediction, which can concurrently mediate photoelectric signal attenuation via promoting the rapid recombination of photoexcited charge carriers on the CuInS2/CoIn2S4 electrode surface, affording dependable ultrasensitive detection results. Benefitting from the ingenious design of the versatile thermoresponsive-photoelectric sensing platform, the preliminary screening and ultrasensitive quantitative analysis can be simultaneously achieved in a single-drop sample. As a consequence, speedy prediction results and satisfied monitoring data are acquired in the ranges of 0.5 pM to 2 nM and 0.001 pM to 5 nM by measuring the temperature change and photocurrent intensity. By right of these advantages, such research paves a prospective paradigm for the manufacture of a visual, rapid, broad-spectrum, and reliable real-time surveillance platform, which allows it to be a promising candidate for epidemic disease home diagnosis and intelligent diagnosis.

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Section: ■ Results and Discussionmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 97%

Photothermal-Reagent-Triggered Visual Thermoresponsive and Quantized Photoelectrochemical Dual-Signal Assay

Yang

et al. 2022

ACS Sens.

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“…Colorimetric detection methods are simple, fast and low-cost, and the surface group-metal interaction could be applied for the design of selective heavy metal ion sensors with colorimetric changes. [39][40][41][42][43] For example, cysteamine functionalized gold nanoparticles have been explored for colorimetric detection of Cu 2+ through forming aggregates. 12 This is because the aggregation of gold nanoparticles alters surface plasmonic resonance and leads to color changes of the colloid solution from red to blue.…”

Section: Colorimetric Assaysmentioning

confidence: 99%

Recent advances in the detection and removal of heavy metal ions using functionalized layered double hydroxides: a review

Liu

Yuan

et al. 2023

Ind. Chem. Mater.

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“…Colorimetric sensors are strong candidates for analytical testing because they allow for simple, on-site, and real-time detection without using complex instruments. Precious metal nanoparticles with excellent localized surface plasmon resonance (LSPR) properties have shown application advantages in colorimetric detection. − Most of the detection principles were based on the color or spectral changes caused by the aggregation of noble metal nanoparticles. These strategies exhibited obvious advantages of time efficiency and ease of operation.…”

Section: Introductionmentioning

confidence: 99%

Single-Probe-Based Colorimetric and Photothermal Dual-Mode Identification of Multiple Bacteria

Wang

Liu³

et al. 2023

Anal. Chem.

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Effective identification of multiple pathogenic bacteria in unknown samples is important for disease prevention and control but remains a challenge yet. A single-mode arraybased sensing approach is simple and sensitive, but it usually relies on the use of multiple crossreactive receptors to construct sensor arrays, which is cumbersome and insufficiently accurate. Here, we developed a sensor array with colorimetric and photothermal dual mode of differentiating multiple pathogenic bacteria. The sensor array was based on boronic acidfunctionalized Au−Fe 3 O 4 nanoparticles (BA−GMNPs), which not only possess localized surface plasmon resonance properties, showing a burgundy color similar to that of AuNPs, but also exhibit mild superparamagnetism, allowing for the differentiation of bacteria before and after binding to the nanoparticles. Immobilization of BA−GMNPs on the bacterial cell surface by covalent bonding would diminish NaCl-induced assembly of BA−GMNPs. Different BA− GMNPs@bacterial complexes differed in their ability to resist assembly and produced different colorimetric and photothermal response signals. A unique molecular fingerprint of each bacterium was obtained by linear discriminant analysis of the response patterns, demonstrating an effective differentiation among the six species studied. Compared with single-mode sensing arrays based on multiple receptors, this method only requires the preparation of a single nanomaterial, which produces two signal outputs for the identification of multiple bacteria with better differentiation. It can distinguish not only multiple pathogenic bacteria but also Gram-negative and Gram-positive bacteria, and, more importantly, it can perform preliminary discrimination of unknown samples.

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Distance-Based Detection of Ag+ with Gold Nanoparticles-Coated Microfluidic Paper

Cited by 20 publications

References 34 publications

Photothermal-Reagent-Triggered Visual Thermoresponsive and Quantized Photoelectrochemical Dual-Signal Assay

Photothermal-Reagent-Triggered Visual Thermoresponsive and Quantized Photoelectrochemical Dual-Signal Assay

Recent advances in the detection and removal of heavy metal ions using functionalized layered double hydroxides: a review

Single-Probe-Based Colorimetric and Photothermal Dual-Mode Identification of Multiple Bacteria

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