2D MOF-enhanced SPR sensing platform: Facile and ultrasensitive detection of Sulfamethazine via supramolecular probe

Wang, Yindian; Niu, Zhijuan; Xu, Chengcheng; Zhan, Mei; Koh, Kwangnak; Niu, Junfeng; Chen, Jie

doi:10.1016/j.jhazmat.2023.131642

Cited by 20 publications

(4 citation statements)

References 55 publications

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“…The p−π* orbitals exhibit a more continuous energy dispersion and provide a superior energy match compared to that of d−π* orbitals above the Fermi level . Meanwhile, the formation of p−π orbitals during OH adsorption by PdSn causes p−π conjugation effects, , resulting in the strong interaction between the active site and OH . In addition, the p–d orbital hybridization induces electron rearrangement in PdSn, leading to electron back-donation from Pd to H 2 O 2 and subsequently enabling regulation of the O–O bonding strength.…”

Section: Resultsmentioning

confidence: 99%

p–d Orbital Hybridization-Engineered PdSn Nanozymes for a Sensitive Immunoassay

Yan,

Jiao,

Chen

et al. 2024

Nano Lett.

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Nanozymes with peroxidase-like activity have been extensively studied for colorimetric biosensing. However, their catalytic activity and specificity still lag far behind those of natural enzymes, which significantly affects the accuracy and sensitivity of colorimetric biosensing. To address this issue, we design PdSn nanozymes with selectively enhanced peroxidase-like activity, which improves the sensitivity and accuracy of a colorimetric immunoassay. The peroxidase-like activity of PdSn nanozymes is significantly higher than that of Pd nanozymes. Theoretical calculations reveal that the p−d orbital hybridization of Pd and Sn not only results in an upward shift of the d-band center to enhance hydrogen peroxide (H 2 O 2 ) adsorption but also regulates the O−O bonding strength of H 2 O 2 to achieve selective H 2 O 2 activation. Ultimately, the nanozyme-linked immunosorbent assay has been successfully developed to sensitively and accurately detect the prostate-specific antigen (PSA), achieving a low detection limit of 1.696 pg mL −1 . This work demonstrates a promising approach for detecting PSA in a clinical diagnosis.

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Section: Resultsmentioning

confidence: 99%

p–d Orbital Hybridization-Engineered PdSn Nanozymes for a Sensitive Immunoassay

Yan,

Jiao,

Chen

et al. 2024

Nano Lett.

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“…The LOD of the sensor based on 2D MOF Cu-TCPP was 16.7 particles/mL, and its recovery rate was 93.43-102.35%. Later, the same group of authors [109] tested 2D MOF Cu-TCPP for the SPR detection of the antibiotic sulfamethazine (4-amino-N-(4,6-dimethyl-2-pyrimidinyl). They prepared a bilayer sensing platform based on 2D MOF Cu-TCPP, which enhances SPR, and Para-Sulfonatocalix [4]arene (pSC4), which provides the "specific" host-guest interaction with sulfamethazine.…”

Section: Phthalocyanine and Porphyrin-based Mofsmentioning

confidence: 99%

Phthalocyanine and Porphyrin Derivatives and Their Hybrid Materials in Optical Sensors Based on the Phenomenon of Surface Plasmon Resonance

Basova

2024

Chemosensors

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In this review, the state of research over the past fifteen years in the field of the applications of metal phthalocyanines and porphyrin derivatives as well as their hybrid materials with carbon nanotubes, metal oxides, and polymers in optical sensors based on the phenomenon of surface plasmon resonance (SPR) is analyzed. The first chapter of the review presents an analysis of works on the use of porphyrins and phthalocyanines in classical SPR sensors for the detection of gases and volatile organic vapors, as well as their improved modifications, such as total internal reflection ellipsometry (TIRE) and magneto-optical SPR (MOSPR) methods, while the second chapter is devoted to their application for the detection of various analytes in solutions. The third chapter of the review summarizes publications describing recent advances in the use of porous materials based on hybrids of carbon nanotubes and oxides with metal phthalocyanines. The fourth chapter describes two-dimensional metal-organic frameworks (MOFs) based on metal porphyrin derivatives as SPR sensitizers.

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“…Sulfamethazine (SMZ) is widely available in the environment, but high concentrations can cause serious allergic reactions and human cancers, so there is a strong need to monitor SMZ. Wang et al designed an SPR sensing platform by integrating supramolecular probes at the sensing interface using two-dimensional metals as SPR sensitizers and capturing SMZ by specific recognition 74 (Fig. 4d).…”

Section: Application Of Spr Technologymentioning

confidence: 99%