A ratiometric fluorescent sensor enabled by hydrogen bond-reinforced carbon quantum dots and SiO2-encapsulated CdSe-ZnS for high-performance Hg2+ detection in aquatic food

2026-08-10

PRE

Kaixuan Duan

Jianglei Sun

Yuxi Shi

Jiangze Wang

Tong Mu

Ya Zhou

Chao Liu

Chao Deng

Farzad Seidi

Huining Xiao

Yuqian Liu *

DOI：10.1016/j.foodchem.2026.150748

Original

Original request for help

Save

Abstract

En 中文

• Sensor with reinforced carbon quantum dot and background fluorophore for Hg2+. • DMSO boosts the quantum yield of thymidine-derived CQDs via surface passivation. • Sensor shows a dual-response mechanism enabling a wide dynamic detection range. • An ultralow detection limit of 0.76 nM achieved for trace Hg2+ analysis. • The sensor was validated in fish and enabled Hg2+ imaging in live zebrafish.

Keywords:

Aquatic food

Carbon quantum dot

Hydrogen bond-reinforced

Mercury ion

Ratiometric fluorescence

A ratiometric fluorescent sensor enabled by hydrogen bond-reinforced carbon quantum dots and SiO2-encapsulated CdSe-ZnS for high-performance Hg2+ detection in aquatic food

Abstract

Journal

Organization

Cited Papers

Citing Papers