Anchoring zinc-doped carbon dots on a paper-based chip for highly sensitive fluorescence detection of copper ions

Abstract

In this work, zinc-doped carbon dots (Zn-CDs) were anchored on three-dimensional wheel type paper-based microfluidic chip, which were decorated with 6-mercaptonicotinic acid (MNA) and L-cysteine (L-Cys) for highly sensitive and...

Carbon dots@noble metal nanoparticle composites: research progress report

“…In recent years, CDs have been employed to detect various heavy metal ions, food additives, biomolecules, and other target molecules. 52,[147][148][149][150][151][152] Moreover, AuNPs have attracted research attention as a tool to enhance the performance of sensors for detecting biomolecules. Owing to their unique size, shape, and optical properties, they can also sense a variety of substances.…”

Carbon dots and miniaturizing fabrication of portable carbon dot-based devices for bioimaging, biosensing, heavy metal detection and drug delivery applications

“…Other than that, Miao et al 81 had also reported on the encapsulation of zinc-doped CDs (Zn-CDs) in a 3D wheel-type paper-based microfluidic chip which was incorporated with 6-mercaptonicotinic acid (MNA) and l -cysteine ( l -Cys) for Cu 2+ ion detection. The as-prepared Zn-CDs from citric acid and zinc acetate through the hydrothermal method will be firmly attached to the paper based on the amide bond interaction between the carboxyl groups of Zn-CDs and amino groups of paper.…”

A paper-based ratiometric fluorescence sensor based on carbon dots modified with Eu3+ for the selective detection of tetracycline in seafood aquaculture water

“…[13][14][15][16] In our previous work, single-emission CDs were successfully grafted onto the surface of paper. 17 On this basis, we hope that CDs and lanthanide metal complexes with dual-emission fluorescence signals can also be firmly grafted onto a paper chip, while maximizing the ligand-binding ability of lanthanide metal ions. We tried two methods.…”