Application of graphene quantum dots functionalized with thymine and thymine-appended zinc phthalocyanine as novel photoluminescent nanoprobes

2017 ◽  
Vol 41 (4) ◽  
pp. 1447-1458 ◽  
Author(s):  
Ojodomo J. Achadu ◽  
Tebello Nyokong
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Sensitive Detection ◽  
Zinc Phthalocyanine

Thymine Zn phthalocyanine turned off the fluorescence of graphene quantum dots, which was subsequently turned on by Hg2+ for its sensitive detection.

Application of graphene quantum dots decorated with TEMPO-derivatized zinc phthalocyanine as novel nanoprobes: probing the sensitive detection of ascorbic acid

2016 ◽  
Vol 40 (10) ◽  
pp. 8727-8736 ◽  
Author(s):  
Ojodomo J. Achadu ◽  
Tebello Nyokong
Keyword(s):  
Quantum Dots ◽  
Ascorbic Acid ◽  
Graphene Quantum Dots ◽  
Fluorescence Sensor ◽  
Sensitive Detection ◽  
Zinc Phthalocyanine

A nanocomposite of (2,2,6,6-tetramethylpiperidin-1-yl)oxyl substituted zinc phthalocyanine and graphene quantum dots is a selective fluorescence sensor for ascorbic acid.

Sulfur-Doped Graphene Quantum Dots as a Novel Fluorescent Probe for Highly Selective and Sensitive Detection of Fe3+

2014 ◽  
Vol 86 (20) ◽  
pp. 10201-10207 ◽  
Author(s):  
Shuhua Li ◽  
Yunchao Li ◽  
Jun Cao ◽  
Jia Zhu ◽  
Louzhen Fan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescent Probe ◽  
Graphene Quantum Dots ◽  
Sensitive Detection ◽  
Doped Graphene

Post-oxidation treated graphene quantum dots as a fluorescent probe for sensitive detection of copper ions

2016 ◽  
Vol 664 ◽  
pp. 127-132 ◽  
Author(s):  
Yan Li ◽  
Xinqian Liu ◽  
Qiyao Li ◽  
Juan Ge ◽  
Hui Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescent Probe ◽  
Copper Ions ◽  
Graphene Quantum Dots ◽  
Sensitive Detection

scholarly journals One-Step Preparation of Nitrogen-Doped Graphene Quantum Dots With Anodic Electrochemiluminescence for Sensitive Detection of Hydrogen Peroxide and Glucose

2021 ◽  
Vol 9 ◽  
Author(s):  
Zheng Yanyan ◽  
Jing Lin ◽  
Liuhong Xie ◽  
Hongliang Tang ◽  
Kailong Wang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Quantum Dots ◽  
Limit Of Detection ◽  
Hydrothermal Process ◽  
Graphene Quantum Dots ◽  
Sensitive Detection ◽  
Uniform Size ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
One Step

Simple and efficient synthesis of graphene quantum dots (GQDs) with anodic electrochemiluminescence (ECL) remains a great challenge. Herein, we present an anodic ECL-sensing platform based on nitrogen-doped GQDs (N-GQDs), which enables sensitive detection of hydrogen peroxide (H2O2) and glucose. N-GQDs are easily prepared using one-step molecular fusion between carbon precursor and a dopant in an alkaline hydrothermal process. The synthesis is simple, green, and has high production yield. The as-prepared N-GQDs exhibit a single graphene-layered structure, uniform size, and good crystalline. In the presence of H2O2, N-GQDs possess high anodic ECL activity owing to the functional hydrazide groups. With N-GQDs being ECL probes, sensitive detection of H2O2 in the range of 0.3–100.0 μM with a limit of detection or LOD of 63 nM is achieved. As the oxidation of glucose catalyzed by glucose oxidase (GOx) produces H2O2, sensitive detection of glucose is also realized in the range of 0.7–90.0 μM (LOD of 96 nM).

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