Instant Visual Detection of Trinitrotoluene Particulates on Various Surfaces by Ratiometric Fluorescence of Dual-Emission Quantum Dots Hybrid

2011 ◽  
Vol 133 (22) ◽  
pp. 8424-8427 ◽  
Author(s):  
Kui Zhang ◽  
Haibo Zhou ◽  
Qingsong Mei ◽  
Suhua Wang ◽  
Guijian Guan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visual Detection ◽  
Ratiometric Fluorescence ◽  
Dual Emission

Single-excitation, dual-emission biomass quantum dots: preparation and application for ratiometric fluorescence imaging of coenzyme A in living cells

Nanoscale ◽  
2019 ◽  
Vol 11 (19) ◽  
pp. 9270-9275 ◽  
Author(s):  
Yong Cui ◽  
Rongjun Liu ◽  
Fanggui Ye ◽  
Shulin Zhao
Keyword(s):  
Quantum Dots ◽  
Fluorescence Imaging ◽  
Fluorescence Detection ◽  
Coenzyme A ◽  
Living Cells ◽  
Fluorescence Probes ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Dual Emissions

A distinctive approach is proposed to prepare biomass quantum dots (BQDs) with single-excitation and dual-emissions property. The obtained BQDs have been employed as the fluorescence probes for ratiometric fluorescence detection and imaging of coenzyme A in living cells.

Synthesis of dual-emission fluorescent carbon quantum dots and their ratiometric fluorescence detection for arginine in 100% water solution

2019 ◽  
Vol 43 (33) ◽  
pp. 13234-13239 ◽  
Author(s):  
Yuying Wang ◽  
Hanxiao Liu ◽  
Huanhuan Song ◽  
Mingming Yu ◽  
Liuhe Wei ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescence Detection ◽  
Water Solution ◽  
Fast Response ◽  
Carbon Quantum Dots ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Detection Range ◽  
Fluorescent Method ◽  
Ph Detection

The dual-emission carbon dots (CDs) can detect arginine in 100% water via ratiometric fluorescent method. The CDs exhibits good photostability, selectivity, and anti-interference ability, fast response time, and wide pH detection range.

Boric acid functionalized ratiometric fluorescence probe for sensitive and on-site naked eye determination of dopamine based on two different kinds of quantum dots

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72715-72721 ◽  
Author(s):  
Yeqing Xu ◽  
Xiao Wei ◽  
Hongji Li ◽  
Xudong Zheng ◽  
Kai Lu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescence Probe ◽  
Carbon Quantum Dots ◽  
Eye Detection ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Naked Eye ◽  
Aminophenylboronic Acid ◽  
Naked Eye Detection

A simple dual-emission probe based on 3-aminophenylboronic acid functionalized CdTe quantum dots (QDs) and carbon quantum dots (CQDs) was developed for the on-site naked eye detection of dopamine (DA).

Dual-emission ratiometric fluorescence detection of aspirin in human saliva: onsite naked-eye detection and high stability

2017 ◽  
Vol 41 (23) ◽  
pp. 14551-14556 ◽  
Author(s):  
Li Chen ◽  
Lin Sun ◽  
Jiahong Zheng ◽  
Jiangdong Dai ◽  
Yilin Wu ◽  
...  
Keyword(s):  
Fluorescence Detection ◽  
High Stability ◽  
Visual Detection ◽  
Fluorescence Probe ◽  
Human Saliva ◽  
Eye Detection ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Naked Eye ◽  
Naked Eye Detection

A highly stable ratiometric fluorescence probe based on dual-emission QDs was designed for the visual detection of aspirin in human saliva.

scholarly journals Dual-Emission Fluorescence Probe Based on CdTe Quantum Dots and Rhodamine B for Visual Detection of Mercury and Its Logic Gate Behavior

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 713
Author(s):  
Yuefeng Gao ◽  
Sai Xu ◽  
Zhijian Liu ◽  
Kezhen Yu ◽  
Xinxiang Pan
Keyword(s):  
Quantum Dots ◽  
Rhodamine B ◽  
Visual Detection ◽  
Fluorescence Probe ◽  
Limit Of Detection ◽  
Logic Gate ◽  
Cdte Quantum Dots ◽  
Fluorescence Signal ◽  
Dual Emission ◽  
Cdte Qds

It is urgent that a convenient and sensitive technique of detecting Hg2+ be developed because of its toxicity. Conventional fluorescence analysis works with a single fluorescence probe, and it often suffers from signal fluctuations which are influenced by external factors. In this research, a novel dual-emission probe assembled through utilizing CdTe quantum dots (QDs) and rhodamine B was designed to detect Hg2+ visually. Only the emission of CdTe QDs was quenched after adding Hg2+ in the dual-emission probe, which caused an intensity ratio change of the two different emission wavelengths and hence facilitated the visual detection of Hg2+. Compared to single emission QDs-based probe, a better linear relationship was shown between the variation of fluorescence intensity and the concentration of Hg2+, and the limit of detection (LOD) was found to be11.4 nM in the range of 0–2.6 μM. Interestingly, the intensity of the probe containing Hg2+ could be recovered in presence of glutathione (GSH) due to the stronger binding affinity of Hg2+ towards GSH than that towards CdTe QDs. Based on this phenomenon, an IMPLICATION logic gate using Hg2+/GSH as inputs and the fluorescence signal of QDs as an output was constructed.

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