A dual-emission ratiometric fluorescence probe for highly selective and simultaneous detection of tetracycline and ferric ions in environmental water samples based on a boron-doped carbon quantum dot/CdTe–Eu³⁺ composite

Abstract

A dual-emission ratiometric fluorescence probe for the simultaneous detection of tetracycline (TC) and Fe3+ in aqueous solution was fabricated based on the boron-doped carbon quantum dots (B-CQDs)/CdTe-Eu3+ composite. Green-emitting CdTe...

One-step synthesis of N, B-doped carbon dots and their multifunctional applications in the detection of tin ions and gallic acid and information encryption

“…S1a Numerous carbon dots have been used to detect metal ions. [19][20][21] In this work, reactive groups such as amino and hydroxyl groups were introduced into the products by pyridine-2-boric acid and EDA during the synthesis for detecting Sn 2+ . In order to investigate the sensitivity of N, B-CDs to Sn 2+ , fluorescence titration experiments were carried out.…”

A multi-ratiometric fluorescence sensor integrated intrinsic signal amplification strategy for a sensitive and visual assay of the anthrax biomarker based on a bimetallic lanthanide metal–organic framework

“…28 In particular, ratiometric fluorimetry has attracted considerable research interest for DPA determination because it can achieve a more sensitive detection and visual analysis by simultaneously recording the change of different fluorescence signals. [29][30][31][32][33] Lately, some interesting ratiometric fluorimetries have been developed for DPA detection. However, the majority of the existing ratiometric fluorimetry methods for DPA detection usually used one lanthanide ion, such as Tb 3+ or Eu 3+ , to modify the fluorophore, achieving a single-responsive ratiometric fluorescence analysis.…”

Ratiometric fluorescence detection of doxorubicin by R-CQDs based on the inner filter effect and fluorescence resonance energy transfer

“…Since the first accidental discovery of carbon quantum dots (CQDs) by Xu et al in 2004, 1 CQDs have shone in the fields of fluorescent probes, 2,3 cell imaging devices, 4 and luminescent devices. 5 This is particularly evident in the proliferation of articles on fluorescent probes and bioimaging owing to easily modified surfaces, high water solubility, extremely high photostability, non-toxicity, and broad absorption and narrow emission properties.…”