Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Many metal ions are present in biology and in the human body in trace amounts. Despite numerous efforts, metal sensors with ultrahigh sensitivity (< a few picomolar) are rarely achieved. Here, we describe a platform method that integrates a Cu-dependent DNAzyme into graphene-molecule junctions and its application for direct detection of paramagnetic Cu with femtomolar sensitivity and high selectivity. Since DNAzymes specific for other metal ions can be obtained through in vitro selection, the method demonstrated here can be applied to the detection of a broad range of other metal ions.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4583199 | PMC |
| http://dx.doi.org/10.1039/C4SC03612C | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An Efficient Fluorescent Probe Based on Triphenylimidazole End-Capped Diketopyrrolopyrrole for Selective Detection of CN and TFA Through On-Off-On Response.
Luminescence
September 2025
Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
A triphenyl-imidazole end-capped donor-acceptor type potential molecular probe 3 has been designed and synthesized. Probe 3 upon interaction with different classes of metal ions/anions and NPPs displayed high selectivity with CN anion (LOD = 20.42 nM) through fluorescence "turn-Off" response and a naked-eye sensitive visible color change.
View Article and Find Full Text PDFHigh Capacity and Efficient Adsorption of Lutetium(III) by the Metal-Organic Framework HKUST-1 in Simulated Medical Wastewater.
Ann N Y Acad Sci
September 2025
School of Nuclear Science and Technology, University of South China, Hengyang, China.
Lutetium (Lu(III)), a heavy rare earth element, plays a critical role in advanced industrial processes and nuclear medicine applications. Given its high economic value and potential environmental risks, the recovery of Lu(III) from medical wastewater is both necessary and urgent. However, previous studies on the adsorption behavior of Lu(III) have been limited by low adsorption capacity, competition from coexisting metal ions, and the influence of environmental temperature.
View Article and Find Full Text PDFGalvanizing waste-derived Zn-induced defective Fe-based metal-organic frameworks as superior adsorbent for enhanced antibiotic removal.
Environ Res
September 2025
College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou 363000, China; Fujian Province Key Laboratory of Morden Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou 363000, China; Fujian Provincial University Key Laboratory of Poll
The derivation of defect-engineered metal-organic frameworks (MOFs) from industrial waste simultaneously mitigates environmental pollution, reduces MOF synthesis costs, and enhances adsorption performance. Herein, this study demonstrates a sustainable strategy for the resourceful synthesis of iron-based MOF s-MIL-100(Fe) using galvanizing pickling waste liquor (80.5 wt.
View Article and Find Full Text PDFEngineered plasmonic copper (II) sulfide-wrapped polystyrene nanoparticles for spectroscopic detection of mercury ions.
J Hazard Mater
September 2025
Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China. Electronic address:
We report a novel and highly effective UV-Vis sensing platform based on plasmonic copper (II) sulfide-capsulated polystyrene nanoparticles (PS@CuS NPs) for the rapid, ultrasensitive, and selective detection of Hg . The detection mechanism is driven by a specific anion-exchange reaction between Hg and CuS, resulting in the in-situ transformation of plasmonic CuS into non-plasmonic HgS, which induces a distinct and quantifiable shift in UV-Vis absorption. This structural and optical evolution enables the platform to achieve an exceptionally low detection limit of 20 pM within just 5 min, far below most regulatory thresholds, and a wide linear detection range from 20 pM to 30 nM.
View Article and Find Full Text PDFMulti-scale mechanisms and environmental implications of dissolved organic matter-metal ions interactions in aquatic environments: A review.
Water Res
September 2025
School of Architecture and Civil Engineering, Xihua University, Chengdu 610039, China.
The binding interactions between metal ions and dissolved organic matter (DOM) are ubiquitous in freshwater/marine aquatic environments where both coexist. Distinct from free metal ions or DOM, DOM-metal ions (DOM-Me) complexes have emerged as contaminants of emerging concern, primarily due to their altered physicochemical properties, modified migration and transformation patterns, enhanced environmental persistence, and changed ecotoxicity. However, based on the multi-source heterogeneity of DOM and the diversity of metal ions, systematic investigations into the interaction mechanisms and environmental implications of DOM-Me complexes in water environments remain scarce.
View Article and Find Full Text PDF