A smartphone-based ratiometric fluorescent sensing system for on-site detection of pyrethroids by using blue-green dual-emission carbon dots

2022 ◽  
pp. 132154
Author(s):  
Xuecheng Zhu ◽  
Luxuan Han ◽  
Huilin Liu ◽  
Baoguo Sun
Keyword(s):  
Carbon Dots ◽  
Dual Emission ◽  
Fluorescent Sensing ◽  
Sensing System

scholarly journals Noval Dual-Emission Fluorescence Carbon Dots as a Ratiometric Probe for Cu2+ and ClO− Detection

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1232
Author(s):  
Jiaqing Guo ◽  
Aikun Liu ◽  
Yutian Zeng ◽  
Haojie Cai ◽  
Shuai Ye ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Background Noise ◽  
Good Recovery ◽  
Ratiometric Fluorescence ◽  
Dual Emission ◽  
Simple Method ◽  
Real Samples ◽  
Nitrogen Doped ◽  
Probe Concentration ◽  
Ratiometric Probe

The use of carbon dots (CDs) with dual emission based on ratiometric fluorescence has been attracting attention in recent times for more accurate ion detection since they help avoid interference from background noise, probe concentration, and complexity. Herein, novel dual-emission nitrogen-doped CDs (NCDs) were prepared by a simple method for Cu2+ and ClO- detection. The NCDs showed excellent anti-interference ability and selectivity for different emissions. In addition, a good linear relationship was observed between the fluorescence intensity (FI) of the NCD solutions in different emissions with Cu2+ (0–90 μM) and ClO- (0–75 μM). The limits of both Cu2+ detection and ClO- were very low, at 17.7 and 11.6 nM, respectively. The NCDs developed herein also showed a good recovery rate in water for Cu2+ and ClO− detection. Hence, they are expected to have a more extensive application prospect in real samples.

Ratiometric Dual-emission of Rhodamine-B Grafted Carbon Dots for Full-range Solvent Components Detection

2021 ◽  
pp. 338743
Author(s):  
Qian He ◽  
Shengyi Zhuang ◽  
Yuxiu Yu ◽  
Haojie Li ◽  
Yaodong Liu
Keyword(s):  
Rhodamine B ◽  
Carbon Dots ◽  
Full Range ◽  
Dual Emission

A dual-emission ratiometric fluorescent nanoprobe based on silicon nanoparticles and carbon dots for efficient detection of Cu(II)

CrystEngComm ◽  
2021 ◽  
Author(s):  
Huiyuan Kou ◽  
Shujie Pang ◽  
Boyu Yang ◽  
Mao Wang ◽  
Juan Ding ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Silicon Nanoparticles ◽  
Dual Emission ◽  
Emission Properties ◽  
Fluorescent Nanoprobe ◽  
Fluorescent Silicon Nanoparticles ◽  
Efficient Detection ◽  
New Type

In this work, a new type of ratiometric fluorescent nanoprobe with dual-emission properties is designed and constructed. The dual-emission nanoprobe is prepared from fluorescent silicon nanoparticles (Si NPs) and carbon...

Matter, energy and information network of a graphene-peptide-based fluorescent sensing system for molecular logic computing, detection and imaging of cancer stem cell marker CD133 in cells and tumor tissues

The Analyst ◽  
2019 ◽  
Vol 144 (6) ◽  
pp. 1881-1891 ◽  
Author(s):  
Fu Rui Zhang ◽  
Jiao Yang Lu ◽  
Qing Feng Yao ◽  
Qiu Yan Zhu ◽  
Xin Xing Zhang ◽  
...  
Keyword(s):  
Stem Cell Marker ◽  
Information Network ◽  
Cancer Stem Cell Marker ◽  
Cell Marker ◽  
Fluorescent Sensing ◽  
Sensing System ◽  
Molecular Logic ◽  
Tumor Tissues ◽  
Logic Operations ◽  
Matter Energy

A graphene-peptide-based fluorescent sensing system for molecular logic operations, sensing and imaging of CD133.

scholarly journals Green Synthesis of Fluorescent Ag Nanoclusters for Detecting Cu2+ Ions and Its “Switch-On” Sensing Application for GSH

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Yunpeng Shang ◽  
Hui Gao ◽  
Lei Li ◽  
Chaoqun Ma ◽  
Jiao Gu ◽  
...  
Keyword(s):  
Limit Of Detection ◽  
Synthesis Method ◽  
Fluorescence Emission ◽  
Emission Peak ◽  
Silver Nanoclusters ◽  
Synthesis Process ◽  
Blue Fluorescence ◽  
Fluorescent Sensing ◽  
Sensing System ◽  
Ag Ncs

Herein, we prepared the L-histidine- (His-) protected silver nanoclusters (Ag NCs) by the microwave synthesis method. The synthesis process was rapid, facile, and environmentally friendly. Under 356 nm excitation, the as-prepared Ag NCs exhibited the blue fluorescence, and the fluorescence emission peak was located at 440 nm. The Ag NCs could successfully detect trace copper (Cu2+) ions in the aqueous solution and the limit of detection (LOD) was as low as 0.6 pM. Interestingly, the Ag NCs showed a different pH-dependent selectivity for both Cu2+ and iron (Fe3+) ions with no responses to other heavy metal ions. Furthermore, the as-fabricated fluorescent sensing system was utilized to detect glutathione (GSH, the LOD was 0.8 nM) by using the “switch-on” fluorescence recovery of Ag NCs through adding glutathione (GSH) to the Cu2+-Ag NCs solution.

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