DNAzyme-mediated fluorescence sensor based on covalent organic framework for Pb2+ detection

DNA-Functionalized Covalent Organic Framework for Colorimetric Detection and Adsorption Removal of Uranyl Ions.

Inspired by the modulatable nanozymatic activity of covalent organic frameworks (COFs) by single-stranded DNA (ssDNA), herein, we developed a versatile platform for sensitive/specific colorimetric detection and efficient adsorption of UO22+ based on DNA aptamer-functionalized COFs. Three COFs with varying alkyne conten...

A Label-free Simple Biosensor for Pb2+ Detection Based on G-quadruplex DNA and Exonuclease III

A label-free Pb2+ biosensor was established based on G-quadruplex DNA (G4-DNA) and Exonuclease III (Exo III) and exhibited excellent specificity for Pb2+ and achieved satisfactory recovery rates in pond water.

A Label-Free Fluorescence Detection Strategy for Cd2⁺ Based on an Aptamer, Exonuclease I, and SYBR Gold

A Schiff base-functionalized europium metal-organic framework for turn-off fluorescence sensing of Cu2.

Developing a low-cost, highly sensitive, and accurate fluorescence-based approach for Cu2+ detection is crucial for reducing heavy metal pollution in industrial effluent. Here, we report a newly synthesized Schiff base europium metal-organic framework (Eu-MOF) and demonstrate its use for turn-off fluorescent detection...

Preparation of a versatile fluorescence sensor for co-detecting ions in aqueous solution.

Label-free and enzyme-free fluorescent biosensor for ultrasensitive detection of tobramycin via cascade signal amplification.

A novel enzyme-free and label-free fluorescent biosensor based on a cascade signal amplification strategy, integrating an entropy-driven DNA circuit (EDC) with catalytic hairpin assembly (CHA) that offers a promising platform for food safety supervision and clinical diagnostics.