Preparation of carbon quantum dots with tunable photoluminescence by rapid laser passivation in ordinary organic solvents

2011 ◽  
Vol 47 (3) ◽  
pp. 932-934 ◽  
Author(s):  
Xiangyou Li ◽  
Hongqiang Wang ◽  
Yoshiki Shimizu ◽  
Alexander Pyatenko ◽  
Kenji Kawaguchi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Organic Solvents ◽  
Carbon Quantum Dots

A novel fluorescent sensor for water in organic solvents based on dynamic quenching of carbon quantum dots

2018 ◽  
Vol 42 (23) ◽  
pp. 18787-18793 ◽  
Author(s):  
Jianfei Wei ◽  
Ye Yuan ◽  
Haikuo Li ◽  
Dan Hao ◽  
Chenying Sun ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Organic Solvents ◽  
Fluorescent Sensor ◽  
Carbon Quantum Dots ◽  
Dynamic Quenching

A novel fluorescent sensor for water in organic solvents was proposed based on dynamic quenching of carbon quantum dots.

scholarly journals A sensitive fluorescent sensor for the detection of trace water in organic solvents based on carbon quantum dots with yellow fluorescence

RSC Advances ◽  
2018 ◽  
Vol 8 (65) ◽  
pp. 37028-37034 ◽  
Author(s):  
Jianfei Wei ◽  
Haikuo Li ◽  
Ye Yuan ◽  
Chenying Sun ◽  
Dan Hao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Water Content ◽  
Organic Solvents ◽  
Fluorescent Sensor ◽  
Carbon Quantum Dots ◽  
Yellow Fluorescence ◽  
Trace Water

A simple fluorescent sensor for water content based on carbon quantum dots with yellow fluorescence was first demonstrated.

LUMINESCENT DETERMINATION OF SUGAR IN NATURAL HONEY

2020 ◽  
Vol 0 (4) ◽  
pp. 29-32
Author(s):  
B.M. GAREEV ◽  
◽  
A.M. ABDRAKHMANOV ◽  
G.L. SHARIPOV ◽  
◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laboratory Test ◽  
Aqueous Solutions ◽  
Analytical Method ◽  
Sugar Content ◽  
Carbon Quantum Dots ◽  
Photoluminescence Intensity ◽  
Sucrose Content ◽  
Natural Honey

The photoluminescence of carbon quantum dots synthesized from natural honey and mixtures of honey and sugar has been studied. An increase in the sugar content leads to a decrease in the photoluminescence intensity without changing the shape of the luminescence spectrum of these quantum dots aqueous solutions, which is associated with a decrease in the yield of their synthesis in the sugar presence. The discovered effect can be used to detect sugar in honey. When examining five different market samples of flower honey using this method, two of them showed a significant decrease in the photoluminescence intensity. A laboratory test for compliance with GOST 19792-2017 Standard requirements established an excess of the sucrose content in these samples. Luminescent determination of sugar in honey does not require complicated equipment and can be used to develop a new analytical method for determining the sugar content in counterfeit natural honey.

Enhanced reduction of p-nitrophenol by zerovalent iron modified with carbon quantum dots

2021 ◽  
Vol 285 ◽  
pp. 119829
Author(s):  
Peng Fan ◽  
Xuanjun Zhang ◽  
Huanhuan Deng ◽  
Xiaohong Guan
Keyword(s):  
Quantum Dots ◽  
Carbon Quantum Dots ◽  
Zerovalent Iron
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