Enhanced electrochemical and SERS signals by self-assembled gold microelectrode arrays: A dual readout platform for multiplex immumoassay of tumor biomarkers

Gu, Xiaosong; Wang, Kaiyue; Qiu, Jiawei; Wang, Yajie; Tian, Shu; He, Zhenkuan; Zong, Ruowen; Kraatz, Heinz‐Bernhard

doi:10.1016/j.snb.2021.129674

Cited by 41 publications

(26 citation statements)

References 51 publications

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“…The spectrum of PCP-E displays the unique absorption peaks of epoxy groups at 1255 cm −1 , 906 cm −1 , and 847 cm −1 . 33–35 After IDA modification, the spectrum of PCP-IDA shows that the characteristic peaks of epoxy groups are significantly reduced and the characteristic band of C–N groups appears at 1040 cm −1 , indicating that a large number of epoxy groups have participated in the functionalization reaction. 36,37 The obvious broadening of the hydroxyl peak at 3520 cm −1 after modification further confirms the modification reaction of the epoxy groups with IDA.…”

Section: Resultsmentioning

confidence: 99%

Sustainably closed loop recycling of hierarchically porous polymer microbeads for efficient removal of cationic dyes

Yang

Chen

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Resultsmentioning

confidence: 99%

Sustainably closed loop recycling of hierarchically porous polymer microbeads for efficient removal of cationic dyes

Yang

Chen

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…PS microspheres with a diameter of 1.5 μm dispersed in water/ethanol and self-assembled into a single-layer close-packed template on the water surface (for details, please refer to our earlier literature [ 36 , 39 , 40 ]). After the suspended PS microspheres settled, the template was transferred to the surface of a gold-coated (magnetron sputtering, 100 nm thickness) ITO slide.…”

Section: Methodsmentioning

confidence: 99%

“…Nickel nanoparticles were electrodeposited into the gap of the polystyrene (PS) sphere template to get an enlarged surface area of the electrode, providing good support for the Ta nanoparticles and facilitating the electron transfer in the oxidation of uric acid. Our group has also used a similar method to prepare silica-isolated gold cavity array electrodes to construct an H 2 O 2 biosensor and immunoassays of biomarker proteins [ 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

H2O2/Glucose Sensor Based on a Pyrroloquinoline Skeleton-Containing Molecule Modified Gold Cavity Array Electrode

Wang

Zhao

et al. 2022

Nanomaterials

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H2O2-related metabolites are essential indicators in clinical diagnosis because the accumulation of such reactive oxygen species could cause the risk of cardiovascular disease. Herein, we reported an electrochemical sensor to determine H2O2 and glucose. The pyrroloquinoline skeleton containing molecules (PQT) were used as the electrocatalyst and the gold cavity array (GCA) electrodes as the supporting electrode. The GCA electrode was fabricated by electrodeposition using high-ordered two-dimensional polystyrene spheres as the template. The strong absorbability of iodide ions (I−) displaced adventitious materials from the metal surface and the I− monolayer was subsequently removed by electrochemical oxidation to get a clean electrode surface. PQT molecules were firmly immobilized on the GCA electrode and performed an excellent electrocatalytic effect on H2O2/glucose detection, manifested by a small overpotential and a significantly increased reduction current. A good linear correlation was observed over a wide range of 0.2 μmol/L–1.0 mmol/L with the limit of detection of 0.05 μmol/L. Moreover, the sensor can realize sensitive, accurate, and the highly selective detection of actual samples, proving its application prospect in clinical diagnosis.

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“…Although the controlled synthesis of uniform low-dimensional (0D, 1D, or 2D) nanostructures has been rapidly exploited in recent years, yet 3D hierarchical nanostructures are also of important significance owing to their remarkable properties and relatively facile synthesis, which have great potential in a variety of fields, such as batteries, supercapacitors, catalysis, and sensors. [32,[87][88][89][90][91][92][93][94][95][96][97][98] In 2019, a solvothermal method was carried out by Kim et al [95] to synthesize the zinc blende (ZB) 3D SnS nanomaterials. By simply controlling the Sn and S precursor ratio, reaction time, and temperature, the well-defined morphology and crystal structure was achieved.…”

Section: Synthesis Of 3d Sns Nanomaterialsmentioning

confidence: 99%

Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications

Zhu

et al. 2021

Small Science

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Tin-based binary chalcogenide Sn-X (X ¼ S, Se, Te) compounds have attracted extensive interest in the optical, optoelectronic, catalysis, and flexible systems due to their intriguing performances. [1][2][3][4][5][6][7] The Sn-X (X ¼ S, Se, Te) compounds are typically layered materials and usually have three crystalline phases: hexagonal, monoclinic, and orthorhombic; orthorhombic phase is denoted by chemical formula SnX, and hexagonal and monoclinic phases are labeled as SnX 2 . [8] Until now, SnSe and SnTe compounds have already achieved great progress in many fields, especially for thermoelectronics and ferroelectrics, [9][10][11][12] and many important reviews have been reported on SnSe and SnTe compounds due to their rapid development. [8,[13][14][15][16] For example, in 2020, Chen et al. [14] summarized a comprehensive overview of controlled synthesis, characterization, and thermoelectric performance in SnSe. In 2018, Shi et al. [8] summarized the growth, characterization, and applications (photovoltaics, supercapacitors, rechargeable batteries, phase-change memory devices, and topological insulator) of SnSe. In 2018, Li et al. [15] reviewed the development of SnS, SnSe, and SnTe, mainly focusing on the controllable tuning of the electron and phonon transport as well as the challenges for further optimization and practical applications. Among Sn-X (X ¼ S, Se, Te) compounds, tin monosulfide (SnS) as a typical black phosphorus analogue, has also received intensive scientific attention due to its unique properties, such as inexpensive, sustainable, suitable bandgap between Si (1.12 eV) and GaAs (1.43 eV), [17] high absorption coefficient (10 À4 cm À1 ), [18] strong mechanical properties, and anisotropic optoelectronic, [19][20][21] which are of great value in optoelectronics, catalysis, sensors, and nanomedicines. [7,[22][23][24][25][26][27] In addition, layered SnS with suitable spacing structures hold promising potentials in the field of lithium (Li)-ion batteries and sodium (Na)-ion batteries due to their relatively high electrical conductivity and theoretical capacity. [28][29][30][31][32] However, although popular SnS has achieved great progress in a variety of fields, few comprehensive reviews have hitherto focused on the field of SnS-based nanostructures and their fascinating applications.Inspired by important reviews on SnSe reported by Chen [14] and Li [8] in recent years, we comprehensively summarized the synthesis, characterization, and the latest progress of SnS-based nanostructures, as shown in Figure 1. First, the most commonly employed techniques (hydrothermal, vapor deposition, electrostatic assembly, etc.) for preparing SnS and SnS-based nanostructures are presented in detail with their recent progress. Furthermore, the fundamental properties (crystal structure, electronic band structure, optical property, and Raman spectroscopy) and diverse applications (batteries, solar cells, catalysis, optoelectronics, sensors, ferroelectrics, thermoelectrics, nonlinear properties, and biomedical applicatio...

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Enhanced electrochemical and SERS signals by self-assembled gold microelectrode arrays: A dual readout platform for multiplex immumoassay of tumor biomarkers

Cited by 41 publications

References 51 publications

Sustainably closed loop recycling of hierarchically porous polymer microbeads for efficient removal of cationic dyes

Sustainably closed loop recycling of hierarchically porous polymer microbeads for efficient removal of cationic dyes

H2O2/Glucose Sensor Based on a Pyrroloquinoline Skeleton-Containing Molecule Modified Gold Cavity Array Electrode

Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications

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