In situ preparation of silver nanoparticles on polyaniline nanofibers for SERS applications

Silva, Bismark Nogueira da; Vieira, Moyra Freitas; Izumi, Celly Mieko Shinohara

doi:10.1016/j.synthmet.2022.117171

Cited by 6 publications

(4 citation statements)

References 39 publications

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“…4 are very uniform with a more concentrated spherical shape. Since AgNPs have a uniform shape and size, 41 the synthesized AgNPs were used as the SERS substrate for the assay samples in this study.…”

Section: Methodsmentioning

confidence: 99%

Collaborative estimation of heavy metal stress in wheat seedlings based on LIBS-Raman spectroscopy coupled with machine learning

Yang,

Li,

Zuo

et al. 2023

J. Anal. At. Spectrom.

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Section: Methodsmentioning

confidence: 99%

Collaborative estimation of heavy metal stress in wheat seedlings based on LIBS-Raman spectroscopy coupled with machine learning

Yang,

Li,

Zuo

et al. 2023

J. Anal. At. Spectrom.

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“…Compared to the aforementioned organic semiconductor materials, polyaniline (PANI) induces a significant enhancement effect in SERS applications . The surface of PANI has high molecular polarizability, resulting in a significant local electric field enhancement effect, which helps to amplify the vibrational scattering signal of analyte molecules. , In addition, PANI has excellent variability, such that its electronic and photonic properties can be readily modulated to allow control of the degree of polymerization through changes in chemical structure. , Therefore, as a flexible substrate material, PANI can be used in a variety of SERS-based studies. In addition, the biocompatibility of PANI may allow applications such as biosensing and bioimaging. , As a SERS-active material, PANI exhibits a certain degree of selectivity for different molecules in terms of its enhancement effect. , The interactions of various molecules with the surface of PANI can result in different enhancement outcomes.…”

Section: Introductionmentioning

confidence: 99%

“…37 The surface of PANI has high molecular polarizability, resulting in a significant local electric field enhancement effect, which helps to amplify the vibrational scattering signal of analyte molecules. 38,39 In addition, PANI has excellent variability, such that its electronic and photonic properties can be readily modulated to allow control of the degree of polymerization through changes in chemical structure. 40,41 Therefore, as a flexible substrate material, PANI can be used in a variety of SERS-based studies.…”

Section: ■ Introductionmentioning

confidence: 99%

Surface Plasmon Resonance-Induced Charge Transfer in Ag/Mercaptobenzoic Acid/Polyaniline Sandwich Structures

Yang,

Guo,

Park

et al. 2024

J. Phys. Chem. C

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Tunable surface plasmon resonance (SPR) of silver (Ag) films fabricated via magnetron sputtering technology was achieved. The experimental findings demonstrated that the thickness of the Ag film gradually increased with increasing sputtering time, resulting in a red shift of the SPR peak. To investigate the charge transfer (CT) induced by SPR in a metal/probe molecule/ organic semiconductor system, a composite system composed of Ag nanoparticles, mercaptobenzoic acid (MBA), and polyaniline (PANI) was prepared by a layered assembly method. Notably, the surface-enhanced Raman scattering (SERS) intensity of the Ag/ MBA/PANI system increased significantly with the introduction of PANI. The contribution of CT was evaluated by using the CT degree of the Ag/MBA/PANI system. On the basis of these results, the CT direction was confirmed by 2D correlation spectroscopy, revealing that the Ag/MBA/PANI system had good stability and excellent SERS performance. This development opens up novel possibilities and perspectives for the fabrication of SERS-active substrates.

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“…In this paper, a flexible SERS sensor based on PANI/GO/Ag film was proposed for detecting the glyphosate. As a conductive polymer, PANI (polyaniline) has high conductivity and stability [4] . GO (Graphene oxide) has a two-dimensional network structure similar to graphene, and its surface has carboxyl, hydroxyl, epoxy and other oxygen-containing functional groups, which makes GO has a high surface activity [5] .…”

Section: Introductionmentioning

confidence: 99%

A flexible SERS sensor of PANI/GO/Ag film for detecting pesticide residue of glyphosate

Peng,

Yuan,

Yang

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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Glyphosate is widely used as a common pesticide. However, glyphosate residues in food is harmful to human health. In this paper, we proposed a flexible SERS sensor of PANI/GO/Ag film for detecting the pesticide residue of glyphosate. The Raman peak at 1045cm -1 of glyphosate was selected as the object to evaluate the SERS ability. To study the Raman enhancement ability of the flexible SERS sensor on glyphosate, the PANI/GO/Ag film was soaked in different concentrations of glyphosate solution to test the characteristic peak value. The results showed that the EF of glyphosate molecules was 1.1×10 6 and the LOD was 2.34 nM. After 15 days of storage at room temperature, the SERS enhanced performance of the sensor was up 92% of the initial strength. The PANI/GO/Ag flexible SERS sensor proposed in this paper has the advantages of high efficiency, rapid and specific recognition, which can be widely applied to the current agriculture, biomedicine, food industry, and other fields.

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In situ preparation of silver nanoparticles on polyaniline nanofibers for SERS applications

Cited by 6 publications

References 39 publications

Collaborative estimation of heavy metal stress in wheat seedlings based on LIBS-Raman spectroscopy coupled with machine learning

Collaborative estimation of heavy metal stress in wheat seedlings based on LIBS-Raman spectroscopy coupled with machine learning

Surface Plasmon Resonance-Induced Charge Transfer in Ag/Mercaptobenzoic Acid/Polyaniline Sandwich Structures

A flexible SERS sensor of PANI/GO/Ag film for detecting pesticide residue of glyphosate

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