Acupressure mat-like nanostructure with improved SERS performance

Hao, Zongshuo; Cao, Huiju; Guo, Liting; Cao, Hongwen; Li, Na; Yang, Yunfan; Jiao, Tifeng; Liu, Hailong; Wang, Mingli

doi:10.1016/j.optlastec.2021.107765

Cited by 27 publications

(5 citation statements)

References 37 publications

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“… 49 AgNPs have been also deposited on NiFe film to optimize the SERS substrate in detecting melamine. 51 Up to now, decorating AgNPs onto zinc oxide nanoplates through the chemical reduction to detect MB, as in the present study, has not been reported yet. Zinc oxide nanoplates were selected since ZnO is an important multifunctional semiconductor and its two-dimensional materials have many practical applications.…”

Section: Introductionmentioning

confidence: 63%

“…10 tested spots were randomly selected on the ZnO/Ag3 substrate within the Raman shift range of 400–1800 nm, the intensities of SERS spectra exhibit negligible change. The RSD value for the signal intensities of the major SERS peaks was calculated by formula 51 to quantitatively assess their uniformity. The maximum RSD at 1436 cm −1 peak was less than 4.8%, revealing that the substrates possess good reproducibility across the entire surface area.…”

Section: Resultsmentioning

confidence: 99%

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Ag nanoparticles on ZnO nanoplates as a hybrid SERS-active substrate for trace detection of methylene blue

Phạm

Dien³

et al. 2022

RSC Adv.

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Section: Introductionmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 99%

Ag nanoparticles on ZnO nanoplates as a hybrid SERS-active substrate for trace detection of methylene blue

Phạm

Dien³

et al. 2022

RSC Adv.

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“…Similarly, imaging of the fluorescence gel system also proved that the fluorescence quenching effect of Fe 3+ on CREN was unique. To sum up, the CREN fluorescent probe had a strong anti-interference ability and could specifically identify Fe 3+ . − …”

Section: Resultsmentioning

confidence: 99%

Highly Sensitive Detection of Iron Ions in Aqueous Solutions Using Fluorescent Chitosan Nanoparticles Functionalized by Rhodamine B

Liu

et al. 2022

ACS Omega

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Detection of iron ions in aqueous solutions is of significant importance because of their important role in the environment and the human body. Herein, a fluorescent rhodamine B-functionalized chitosan nanoparticles probe is reported for the efficient detection of iron ions. The chitosan nanospheres-rhodamine B (CREN) was prepared by grafting rhodamine B onto the surface of chitosan nanospheres through an amidation reaction. The as-prepared CREN fluorescent probes exhibit high fluorescence intensity under ultraviolet light. When iron ions are added to the CREN solution, they can be coordinated with weak-field ligands such as N and O on the surface of chitosan nanoparticles (CSNP) by a high-spin method. The self-assembly of Fe 3+ on the surface of the CREN led to the generation of single electrons and the presence of high paramagnetism, resulting in fluorescence quenching. The quenching effect of Fe 3+ on the CREN fluorescent probe can achieve the efficient detection of Fe 3+ , and the detection limit reaches 10 −5 mol/mL. Moreover, this fluorescence quenching effect of Fe 3+ on the CREN fluorescent probe is specific, which could not be disturbed by other metal ions and counteranions.

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“…12,13 Benefitting from the characteristics of highresolution, fingerprint identification, rapid analysis process, and non-destruction, surface-enhanced Raman scattering (SERS), a spectrum analysis technology bridged between Raman spectroscopy and nanotechnology, has attracted increased interest in bioanalytical applications. 14,15 In principle, the main contributor of SERS is thought to be the electromagnetic enhancement of adjacent noble metal nanostructure surfaces (also called "hot spots") induced by localized surface plasmon resonance (LSPR) which is generated when the frequency of the incident photon matches the overall vibration frequency of the electrons conducted by the precious metal nanoparticles or metal island. 16,17 Therefore, a wide range of nanostructure-based SERS-active substrates and probes have been developed to achieve strong Raman signals.…”

Section: Introductionmentioning

confidence: 99%

A SERS Biosensor Based on Functionalized Au-SiNCA Integrated with a Dual Signal Amplification Strategy for Sensitive Detection of Telomerase Activity During EMT in Laryngeal Carcinoma

Gu¹,

Li²,

Ge³

et al. 2023

IJN

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This paper aims to construct a surface-enhanced Raman spectroscopy (SERS) biosensor based on functionalized Au-Si nanocone arrays (Au-SiNCA) using a dual signal amplification strategy (SDA-CHA) to evaluate telomerase activity during epithelialmesenchymal transition (EMT) in laryngeal carcinoma (LC). Methods: A SERS biosensor based on functionalized Au-SiNCA was designed with an integrated dual-signal amplification strategy to achieve ultrasensitive detection of telomerase activity during EMT in LC patients. Results: Labeled probes (Au-AgNRs@4-MBA@H 1 ) and capture substrates (Au-SiNCA@H 2 ) were prepared by modifying hairpin DNA and Raman signal molecules. Using this scheme, telomerase activity in peripheral mononuclear cells (PMNC) could be successfully detected with a limit of detection (LOD) as low as 10 −6 IU/mL. In addition, biological experiments using BLM treatment of TU686 effectively mimicked the EMT process. The results of this scheme were highly consistent with the ELISA scheme, confirming its accuracy. Conclusion:This scheme provides a reproducible, selective, and ultrasensitive assay for telomerase activity, which is expected to be a potential tool for the early screening of LC in future clinical applications.

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Acupressure mat-like nanostructure with improved SERS performance

Cited by 27 publications

References 37 publications

Ag nanoparticles on ZnO nanoplates as a hybrid SERS-active substrate for trace detection of methylene blue

Ag nanoparticles on ZnO nanoplates as a hybrid SERS-active substrate for trace detection of methylene blue

Highly Sensitive Detection of Iron Ions in Aqueous Solutions Using Fluorescent Chitosan Nanoparticles Functionalized by Rhodamine B

A SERS Biosensor Based on Functionalized Au-SiNCA Integrated with a Dual Signal Amplification Strategy for Sensitive Detection of Telomerase Activity During EMT in Laryngeal Carcinoma

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