Fluorescence/Electrochemical Dual-Mode Sensor Based on a Nickel Metal-Organic Framework DOI
Xue Wang,

Huiying Sun,

Xiao Li

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

This study successfully developed a new dual-mode sensor material based on the nickel metal-organic framework (Ni-MOF) [Ni(tatrz)1.5(5-MIA)·H2O] (CUST-986) (tatrz = 1-(9-(1H-1,2,4-triazol-1-yl)anthracen-10-yl)-1H-1,2,4-triazole, 5-MIA 5-methylisophthalic acid, CUST Changchun University of Science and Technology) for highly efficient detection 2,4,6-trinitrophenol (TNP). In fluorescence sensing mode, CUST-986 demonstrates exceptional selective recognition capability TNP, with high quenching constant (Ksv) 1.676 × 105 M-1 an ultralow limit (LOD) 69.3 nM. electrochemical modified electrode achieves TNP 0.48 μM. Real environmental sample tests show spike recovery rates 80.3-93.6%, indicating good potential practical applications long-term stability. Through characterization techniques including powder X-ray diffraction, UV-vis, DFT calculations, lifetime measurements, mechanism electron transfer inner filter effect was elucidated. bifunctional MOF provides solution monitoring public safety applications.

Language: Английский

A novel MCI-ECL dual organic ligand MOFs with low-potential by band gap regulation for ultrasensitive S.aureus detection DOI
Xuemei Wang,

Zhiyong Yan,

Feifei Zhang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162433 - 162433

Published: April 1, 2025

Language: Английский

Citations

1
Exogenous Coreactant-Free Electrocatalytic Reactive Oxygen Species-Driven Dual-Signal Molecularly Imprinted Electrochemiluminescence Sensor for the Detection of Trenbolone DOI

Yongqiang Li,

Kaida Kuang,

Yang Chen

et al.

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Conventional dual-signal electrochemiluminescence (ECL) sensors feature high sensitivity and reliability, but the involvement of coreactants inevitably results in a complex configuration shows reproducibility risk. Here, we propose an exogenous coreactant-free platform, comprising luminol (anodic luminophore), CdSe quantum dots (cathodic Co3O4/Ti3C2 electrocatalyst (coreaction promoter). At different redox potentials, induces water oxidation oxygen reduction to produce •OH O2•- radicals, which subsequently drive cathodic anodic ECL emission, respectively. The pathways are confirmed by reactive species (ROS) scavenging, effect dissolved is excluded. By integrating with molecular imprinting technology, this sensor employed for quantitative detection trenbolone. It exhibits sensitivity, broad linear range (1.0 × 101 1.0 108 fg mL-1), low limit, capability real samples. This work presents new endogenous ROS-driven that excludes use offers insights into ROS generation design.

Language: Английский

Citations

0
Endogenous Free-Electron-Involved Coreactant-Free Electrochemiluminescence from Nanoclusters and Its Immunoassay Application DOI
Yaojia Ai, Xuwen Gao, Xiaowen Xu

et al.

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

All of the commercialized electrochemiluminescence (ECL) immunoassays are automatically conducted at +1.40 V (vs Ag/AgCl) in coreactant route. To alleviate exogenous effect coreactants and simplify operation procedures, herein, a sulfur-vacancy-involved free electron strategy is proposed to exploit Au nanoclusters (NCs) as anodic electrochemiluminophores perform coreactant-free immunoassay. The deficient coordination between sulfhydryl Met core might induce departure partial S atoms enable Met-capped AuNCs (Met-AuNCs) with electron-rich nature. nature tends endow Met-AuNCs unpaired endogenous electrons, which can directly combine holes for light emitting. Coreactant-free ECL around +0.86 consequently conveniently achieved by merely oxidizing anode. qualified determine human carcinoembryonic antigen from 10 5000 pg/mL limit detection 5 pg/mL. Electron paramagnetic resonance provides clear evidence that electrons within play an important role generation ECL. This promising designing nanoelectrochemiluminophores improved immunoassay performance.

Language: Английский

Citations

0
Fluorescence/Electrochemical Dual-Mode Sensor Based on a Nickel Metal-Organic Framework DOI
Xue Wang,

Huiying Sun,

Xiao Li

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

This study successfully developed a new dual-mode sensor material based on the nickel metal-organic framework (Ni-MOF) [Ni(tatrz)1.5(5-MIA)·H2O] (CUST-986) (tatrz = 1-(9-(1H-1,2,4-triazol-1-yl)anthracen-10-yl)-1H-1,2,4-triazole, 5-MIA 5-methylisophthalic acid, CUST Changchun University of Science and Technology) for highly efficient detection 2,4,6-trinitrophenol (TNP). In fluorescence sensing mode, CUST-986 demonstrates exceptional selective recognition capability TNP, with high quenching constant (Ksv) 1.676 × 105 M-1 an ultralow limit (LOD) 69.3 nM. electrochemical modified electrode achieves TNP 0.48 μM. Real environmental sample tests show spike recovery rates 80.3-93.6%, indicating good potential practical applications long-term stability. Through characterization techniques including powder X-ray diffraction, UV-vis, DFT calculations, lifetime measurements, mechanism electron transfer inner filter effect was elucidated. bifunctional MOF provides solution monitoring public safety applications.

Language: Английский

Citations

0