A target analyte induced fluorescence band shift of piperazine modified carbon quantum dots: a specific visual detection method for oxytetracycline

2019 ◽  
Vol 55 (82) ◽  
pp. 12364-12367 ◽  
Author(s):  
Lei Yang ◽  
Haitong Zhao ◽  
Ning Liu ◽  
Wei Wang
Keyword(s):  
Quantum Dots ◽  
Visual Detection ◽  
Detection Method ◽  
Carbon Quantum Dots ◽  
Fluorescence Band ◽  
Band Shift ◽  
Specific Assay ◽  
Target Analyte

A visual and specific assay of oxytetracycline is realized by inducing a fluorescence band shift of piperazine modified carbon quantum dots.

Copper ion-induced fluorescence band shift of CdTe quantum dots: a highly specific strategy for visual detection of Cu2+ with a portable UV lamp

The Analyst ◽  
2015 ◽  
Vol 140 (23) ◽  
pp. 7859-7863 ◽  
Author(s):  
Xiaohui Lu ◽  
Yunjie Zhao ◽  
Jinjun Zhang ◽  
Xiaozhen Lu ◽  
Yucong Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visual Detection ◽  
Copper Ion ◽  
Cdte Quantum Dots ◽  
Fluorescence Band ◽  
Intensity Change ◽  
Band Shift ◽  
Specific Strategy ◽  
Cdte Qds ◽  
Uv Lamp

Visual detection of Cu2+ is realized based on a copper-induced fluorescence band shift rather than an intensity change of CdTe QDs.

Paper-based visual detection of silver ions and l-cysteine with a dual-emissive nanosystem of carbon quantum dots and gold nanoclusters

2018 ◽  
Vol 10 (32) ◽  
pp. 3945-3950 ◽  
Author(s):  
Bingyan Han ◽  
Ying Li ◽  
Xixi Hu ◽  
Qin Yan ◽  
Jingmei Jiang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visual Detection ◽  
Gold Nanoclusters ◽  
Silver Ions ◽  
Carbon Quantum Dots

The detection of silver ions and l-cysteine with a dual-emissive nanosystem of carbon quantum dots and gold nanoclusters.

Facile and visual detection of acetylcholinesterase inhibitors by carbon quantum dots

2019 ◽  
Vol 43 (25) ◽  
pp. 9924-9933 ◽  
Author(s):  
Reshma Reshma ◽  
Bhanushree Gupta ◽  
Rahul Sharma ◽  
Kallol K. Ghosh
Keyword(s):  
Quantum Dots ◽  
Food Safety ◽  
Environmental Protection ◽  
Rapid Detection ◽  
Visual Detection ◽  
Acetylcholinesterase Inhibitors ◽  
Carbon Quantum Dots

Sensitive and rapid detection of organophosphate toxicants is highly relevant and important in environmental protection and food safety.

Fluorescence and colorimetric dual-mode sensor for visual detection of malathion in cabbage based on carbon quantum dots and gold nanoparticles

2021 ◽  
Vol 343 ◽  
pp. 128494
Author(s):  
Nini Liang ◽  
Xuetao Hu ◽  
Wenting Li ◽  
Anjelina W. Mwakosya ◽  
Ziang Guo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gold Nanoparticles ◽  
Visual Detection ◽  
Carbon Quantum Dots ◽  
Dual Mode

Use of a smartphone for visual detection of melamine in milk based on Au@Carbon quantum dots nanocomposites

2019 ◽  
Vol 272 ◽  
pp. 58-65 ◽  
Author(s):  
Xuetao Hu ◽  
Jiyong Shi ◽  
Yongqiang Shi ◽  
Xiaobo Zou ◽  
Muhammad Arslan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visual Detection ◽  
Carbon Quantum Dots

scholarly journals Potential Application of Nitrogen-Doped Carbon Quantum Dots Synthesized by a Solvothermal Method for Detecting Silver Ions in Food Packaging

2019 ◽  
Vol 16 (14) ◽  
pp. 2518 ◽  
Author(s):  
Lu ◽  
Su ◽  
Feng ◽  
Jiang ◽  
Hong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Functional Groups ◽  
Food Packaging ◽  
Detection Method ◽  
Solvothermal Method ◽  
Carbon Quantum Dots ◽  
Average Lifetime ◽  
Nitrogen Doped ◽  
Flame Atomic Absorption ◽  
Nitrogen Doped Carbon

In this paper, nitrogen-doped carbon quantum dots (N-CQDs) were synthesized by a solvothermal method using 1,2,4-triaminobenzene as a carbon precursor. The surface of the synthesized N-CQDs was modified with amino functional groups. The results indicated that N-CQDs had various N-related functional groups and chemical bonds and were amorphous in structure. At the same time, the quantum yield of N-CQDs was 5.11%, and the average lifetime of fluorescence decay was 5.79 ns. The synthesized N-CQDs showed good selectivity for and sensitivity to Ag+. A linear relationship between N-CQDs detection efficiency and Ag+ concentration was observed for concentration ranges of Ag+ corresponding to 0–10 μM and 10–30 μM. In addition, N-CQDs were used for the detection of trace Ag+ in food packaging material. The silver ion content of the sample determined by the N-CQDs detection method was 1.442 mg/L, with a relative error of 6.24% with respect to flame atomic absorption spectrometry, according to which the Ag+ content was 1.352 mg/L. This indicates that the N-CQDs detection method is reliable. Therefore, the N-CQDs prepared in this paper can detect Ag+ rapidly, simply, and sensitively and are expected to be a promising tool for the detection of trace Ag+ in food packaging materials.

Highly sensitive and selective paper sensor based on carbon quantum dots for visual detection of TNT residues in groundwater

2017 ◽  
Vol 243 ◽  
pp. 1002-1009 ◽  
Author(s):  
Xike Tian ◽  
Hui Peng ◽  
Yong Li ◽  
Chao Yang ◽  
Zhaoxin Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visual Detection ◽  
Carbon Quantum Dots ◽  
Highly Sensitive ◽  
Paper Sensor
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