Time-efficient syntheses of nitrogen and sulfur co-doped graphene quantum dots with tunable luminescence and their sensing applications

New and bright N,S co-doped GQDs are synthesized and serve as fluorescence probes for parallel and selective detection of Fe3+, Cu2+ and Ag+ ions in biological and environmental samples.

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Promising photodynamic antimicrobial activity of polyimine substituted zinc phthalocyanine and its polycationic derivative when conjugated to nitrogen, sulfur, co-doped graphene quantum dots against Staphylococcus aureus

Photodiagnosis and Photodynamic Therapy ◽

10.1016/j.pdpdt.2021.102300 ◽

2021 ◽

Vol 34 ◽

pp. 102300

Author(s):

Pinar Sen ◽

Tebello Nyokong

Keyword(s):

Staphylococcus Aureus ◽

Quantum Dots ◽

Antimicrobial Activity ◽

Graphene Quantum Dots ◽

Zinc Phthalocyanine ◽

Doped Graphene ◽

Co Doped

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Retracted Article: N, S co-doped graphene quantum dots from a single source precursor used for photodynamic cancer therapy under two-photon excitation

Chemical Communications ◽

10.1039/c4cc09280e ◽

2014 ◽

Author(s):

Rijun Gui ◽

Xifeng Liu ◽

Hui Jin ◽

Zonghua Wang ◽

Feifei Zhang ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Quantum Dots ◽

Single Source ◽

Two Photon ◽

Photon Excitation ◽

Single Source Precursor ◽

Photodynamic Cancer Therapy ◽

Retracted Article ◽

Doped Graphene ◽

Co Doped

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Mn, B, N Co-Doped Graphene Quantum Dots for Fluorescence Sensing and Biological Imaging

SSRN Electronic Journal ◽

10.2139/ssrn.3972103 ◽

2021 ◽

Author(s):

Bingyang Li ◽

Xiao Xiao ◽

Menglei Hu ◽

Yanxin Wang ◽

Yiheng Wang ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Quantum Dots ◽

Biological Imaging ◽

Fluorescence Sensing ◽

Doped Graphene ◽

Co Doped

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Synthesis of magnetically reusable Fe3O4 nanospheres-N, S co-doped graphene quantum dots enclosed CdSe its application as a photocatalyst

Journal of Industrial and Engineering Chemistry ◽

10.1016/j.jiec.2019.01.048 ◽

2019 ◽

Vol 75 ◽

pp. 230-237

Author(s):

Alireza Khataee ◽

Saeed Sajjadi ◽

Aliyeh Hasanzadeh ◽

Sang Woo Joo

Keyword(s):

Quantum Dots ◽

Graphene Quantum Dots ◽

Doped Graphene ◽

Fe3o4 Nanospheres ◽

Co Doped

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Electrochemical detection of white spot syndrome virus with a silicone rubber disposable electrode composed of graphene quantum dots and gold nanoparticle-embedded polyaniline nanowires

Journal of Nanobiotechnology ◽

10.1186/s12951-020-00712-4 ◽

2020 ◽

Vol 18 (1) ◽

Author(s):

Kenshin Takemura ◽

Jun Satoh ◽

Jirayu Boonyakida ◽

Sungjo Park ◽

Ankan Dutta Chowdhury ◽

...

Keyword(s):

Quantum Dots ◽

White Spot Syndrome Virus ◽

Graphene Quantum Dots ◽

High Sensitivity ◽

White Spot ◽

Sensing Matrix ◽

Disposable Electrode ◽

Sensing Applications ◽

Doped Graphene ◽

White Spot Syndrome

Abstract Background With the enormous increment of globalization and global warming, it is expected that the number of newly evolved infectious diseases will continue to increase. To prevent damage due to these infections, the development of a diagnostic method for detecting a virus with high sensitivity in a short time is highly desired. In this study, we have developed a disposable electrode with high-sensitivity and accuracy to evaluate its performances for several target viruses. Results Conductive silicon rubber (CSR) was used to fabricate a disposable sensing matrix composed of nitrogen and sulfur-co-doped graphene quantum dots (N,S-GQDs) and a gold-polyaniline nanocomposite (AuNP-PAni). A specific anti-white spot syndrome virus (WSSV) antibody was conjugated to the surface of this nanocomposite, which was successfully applied for the detection of WSSV over a wide linear range of concentration from 1.45 × 102 to 1.45 × 105 DNA copies/ml, with a detection limit as low as 48.4 DNA copies/ml. Conclusion The engineered sensor electrode can retain the detection activity up to 5 weeks, to confirm its long-term stability, required for disposable sensing applications. This is the first demonstration of the detection of WSSV by a nanofabricated sensing electrode with high sensitivity, selectivity, and stability, providing as a potential diagnostic tool to monitor WSSV in the aquaculture industry.

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