High-activity Mo, S co-doped carbon quantum dot nanozyme-based cascade colorimetric biosensor for sensitive detection of cholesterol

2019 ◽  
Vol 7 (44) ◽  
pp. 7042-7051 ◽  
Author(s):  
Lianjing Zhao ◽  
Zepei Wu ◽  
Guannan Liu ◽  
Huiying Lu ◽  
Yuan Gao ◽  
...  
Keyword(s):  
Quantum Dot ◽  
High Activity ◽  
Sensitive Detection ◽  
Colorimetric Sensing ◽  
Carbon Quantum Dot ◽  
Sensing Platform ◽  
Co Doped

A Mo, S co-doped carbon quantum dot nanozyme-based cascade colorimetric sensing platform was fabricated and its application for detection of cholesterol was shown.

Fabrication of a highly sensitive electrochemiluminescence chlorpromazine sensor using a Ru(bpy)32+ incorporated carbon quantum dot–gelatin composite film

2017 ◽  
Vol 9 (6) ◽  
pp. 1011-1017 ◽  
Author(s):  
Zhimin Liu ◽  
Fang Zhang ◽  
Lin Cui ◽  
Kang Wang ◽  
Haijun Zhan
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Composite Film ◽  
Carbon Quantum Dots ◽  
Sensitive Detection ◽  
Carbon Quantum Dot ◽  
Sensing Platform ◽  
Highly Sensitive

A novel electrochemiluminescence sensing platform for the sensitive detection of chlorpromazine (CPZ) was fabricated based on a Ru(bpy)32+/carbon quantum dots/gelatin composite film.

scholarly journals Nicotinamide-functionalized carbon quantum dot as new sensing platform for portable quantification of vitamin B12 in fluorescence, UV-Vis and smartphone triple mode

2021 ◽  
Author(s):  
Sahar Dadkhah ◽  
Ali Mehdinia ◽  
Ali Jabbari ◽  
Ahmad Manbohi
Keyword(s):  
Quantum Dot ◽  
Vitamin B12 ◽  
Simultaneous Detection ◽  
High Sensitivity ◽  
Colorimetric Sensing ◽  
Practical Applications ◽  
Carbon Quantum Dot ◽  
Sensing Platform ◽  
Triple Mode

Abstract Development of an efficient, portable and simple nanosensor-based systems with reliable analytical performance for on-site monitoring of vitamin B12 (VB12) are still major problems and a challenging work for quality control of manufacturers. Herein, a new fluorescence, UV-Vis and smartphone triple mode nanosensors were designed for the simultaneous detection of VB12 with high sensitivity and accuracy. A novel nanosensor was synthesized through nicotinamide-functionalizing on carbon quantum dot (NA-CQDs) by an one-step microwave-assisted method with green approaches. The NA-CQDs as new nanosensor showed excellent fluorescence properties and wide linear ranges from 0.1–60 µM with the detection limits of 31.7 nM. Moreover, color changes of NA-CQDs induced by the VB12 could also be detected by UV-Vis spectrophotometer and inhouse-developed application installed on smartphone as a signal reader, simultanusly. The Red, Green and Blue (RGB) intensities of the colorimetric images of NA-CQDs/VB12 system which taken by smartphone's camera converted into quantitative values by the introduced application. A smartphone-integrated with NA-CQDs as colorimetric sensing platform displays good linear ranges (4.16 to 66.6 µM) for on-site determination of VB12 with detection limit of 1.40 µM. The method was successfully applied in the determination of VB12 in complex pharmaceutical supplement formulations without any sample pre-treatment and matrix interfering effects. The recovery results (96.52–105.10%) which are in agreement with the reference methods, demonstrating the capability of the smartphone-assisted colorimetric sensing platform in many on-site practical applications of quality controls.

Sulfur and nitrogen co‐doped graphene quantum dot‐assisted chemiluminescence for sensitive detection of tryptophan and mercury (II)

Luminescence ◽  
2020 ◽  
Vol 35 (5) ◽  
pp. 773-780 ◽  
Author(s):  
Yue Li ◽  
Jia Wang ◽  
Yaqiong Yang ◽  
Suqin Han
Keyword(s):  
Quantum Dot ◽  
Sensitive Detection ◽  
Graphene Quantum Dot ◽  
Doped Graphene ◽  
Co Doped

In situ polymerization of aniline on carbon quantum dots: a new platform for ultrasensitive detection of glucose and hydrogen peroxide

RSC Advances ◽  
2015 ◽  
Vol 5 (28) ◽  
pp. 21675-21680 ◽  
Author(s):  
Yanmei Zhang ◽  
Xinjian Yang ◽  
Zhiqiang Gao
Keyword(s):  
Hydrogen Peroxide ◽  
Quantum Dots ◽  
Quantum Dot ◽  
In Situ Polymerization ◽  
Carbon Quantum Dots ◽  
Ultrasensitive Detection ◽  
Carbon Quantum Dot ◽  
Sensing Platform ◽  
Highly Sensitive

A simple and highly sensitive carbon quantum dot based sensing platform for glucose and hydrogen peroxide.

A novel chemiluminescence sensor for the determination of indomethacin based on sulfur and nitrogen co-doped carbon quantum dot-KMnO4 reaction

Luminescence ◽  
2017 ◽  
Vol 32 (7) ◽  
pp. 1174-1179 ◽  
Author(s):  
Tooba Hallaj ◽  
Mohammad Amjadi ◽  
Jamshid L. Manzoori ◽  
Neda Azizi
Keyword(s):  
Quantum Dot ◽  
Carbon Quantum Dot ◽  
Co Doped

Rapid colorimetric sensing platform for the detection of Listeria monocytogenes foodborne pathogen

2016 ◽  
Vol 86 ◽  
pp. 1061-1066 ◽  
Author(s):  
Sahar Alhogail ◽  
Ghadeer A.R.Y. Suaifan ◽  
Mohammed Zourob
Keyword(s):  
Listeria Monocytogenes ◽  
Foodborne Pathogen ◽  
Colorimetric Sensing ◽  
Sensing Platform
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