Application of PEGylated graphene quantum dots in cell imaging

2019 ◽  
Vol 547 (1) ◽  
pp. 21-26
Author(s):  
Kai-Qi Wang ◽  
Kun-Rong Li ◽  
Bing Yu ◽  
You-Qing Shen ◽  
Hai-Lin Cong
Keyword(s):  
Quantum Dots ◽  
Cell Imaging ◽  
Graphene Quantum Dots

scholarly journals Chlorine Modulation Fluorescent Performance of Seaweed-Derived Graphene Quantum Dots for Long-Wavelength Excitation Cell-Imaging Application

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4994
Author(s):  
Weitao Li ◽  
Ningjia Jiang ◽  
Bin Wu ◽  
Yuan Liu ◽  
Luoman Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Toxic Metal ◽  
Disease Diagnosis ◽  
Excitation Wavelength ◽  
Chlorine Atoms ◽  
Long Wavelength ◽  
Imaging Application ◽  
Preliminary Application

Biological imaging is an essential means of disease diagnosis. However, semiconductor quantum dots that are used in bioimaging applications comprise toxic metal elements that are nonbiodegradable, causing serious environmental problems. Herein, we developed a novel ecofriendly solvothermal method that uses ethanol as a solvent and doping with chlorine atoms to prepare highly fluorescent graphene quantum dots (GQDs) from seaweed. The GQDs doped with chlorine atoms exhibit high-intensity white fluorescence. Thus, their preliminary application in bioimaging has been confirmed. In addition, clear cell imaging could be performed at an excitation wavelength of 633 nm.

Recent Advances in the Cancer Bioimaging with Graphene Quantum Dots

2018 ◽  
Vol 25 (25) ◽  
pp. 2876-2893 ◽  
Author(s):  
Keheng Li ◽  
Xinna Zhao ◽  
Gang Wei ◽  
Zhiqiang Su
Keyword(s):  
Quantum Dots ◽  
Biomedical Applications ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Biological Properties ◽  
Live Cells ◽  
Physical Chemical ◽  
Specific Cancer ◽  
Good Biocompatibility ◽  
Low Cytotoxicity

Fluorescent graphene quantum dots (GQDs) have attracted increasing interest in cancer bioimaging due to their stable photoluminescence (PL), high stability, low cytotoxicity, and good biocompatibility. In this review, we present the synthesis and chemical modification of GQDs firstly, and then introduce their unique physical, chemical, and biological properties like the absorption, PL, and cytotoxicity of GQDs. Finally and most importantly, the recent applications of GQDs in cancer bioimaging are demonstrated in detail, in which we focus on the biofunctionalization of GQDs for specific cancer cell imaging and real-time molecular imaging in live cells. We expect this work would provide valuable guides on the synthesis and modification of GQDs with adjustable properties for various biomedical applications in the future.

Fabrication of Graphene Quantum Dots and Hexagonal Boron Nitride Nanocomposites for Fluorescent Cell Imaging

2013 ◽  
Vol 9 (10) ◽  
pp. 1679-1685 ◽  
Author(s):  
Juan Peng ◽  
Sheng Wang ◽  
Peng-Hui Zhang ◽  
Li-Ping Jiang ◽  
Jian-Jun Shi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Boron Nitride ◽  
Cell Imaging ◽  
Hexagonal Boron Nitride ◽  
Graphene Quantum Dots ◽  
Fluorescent Cell

Synthesis and Cell Imaging of Graphene Quantum Dots from Konjac Glucomannan

2021 ◽  
Vol 6 (46) ◽  
pp. 13277-13285
Author(s):  
Huiting Kang ◽  
Lilei Zhang ◽  
Sheng Hu ◽  
Lianxiong Guan ◽  
Wei Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cell Imaging ◽  
Graphene Quantum Dots ◽  
Konjac Glucomannan

scholarly journals Facile synthesis of graphene quantum dots from glucan and their application as a deoxidizer and in cell imaging

2020 ◽  
pp. 174751982097393
Author(s):  
Jialu Shen ◽  
Weifeng Chen ◽  
Xiang Liu
Keyword(s):  
Quantum Dots ◽  
Driving Force ◽  
Biomedical Applications ◽  
Cell Imaging ◽  
Size Range ◽  
Graphene Quantum Dots ◽  
Reducing Agents ◽  
Facile Synthesis ◽  
Average Size

A facile and effective route to synthesize graphene quantum dots for cell imaging and as a deoxidizer by using glucan as a precursor is developed. AuNPs are successfully synthesized by mixing of graphene quantum dots and Au(III) salts without any additional reductants. The reducing driving force of these graphene quantum dots is much weaker than that of strong reducing agents such as NaBH4. The sizes of the as-synthesized AuNPs are much larger, with an average size of 15 nm. Notably, this size range is specifically useful and optimal for the application of AuNPs in biomedical applications. In addition, the as-synthesized graphene quantum dots are also successfully applied in cell imaging.

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