Rapid fabrication of carbon dots from babul seed powder as green precursor: Antioxidant activity and multicolor imaging

2020 ◽  
Author(s):  
R Swathi ◽  
G Bhagavanth Reddy ◽  
B Rajkumar ◽  
P Yadagiri Swamy
Keyword(s):  
Antioxidant Activity ◽  
Carbon Dots ◽  
Rapid Fabrication ◽  
Multicolor Imaging

Green preparation of carbon dots for intracellular pH sensing and multicolor live cell imaging

2016 ◽  
Vol 4 (44) ◽  
pp. 7130-7137 ◽  
Author(s):  
Wen-Jing Wang ◽  
Jun-Mei Xia ◽  
Ji Feng ◽  
Meng-Qi He ◽  
Ming-Li Chen ◽  
...  
Keyword(s):  
Intracellular Ph ◽  
Carbon Dots ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Emission Feature ◽  
Ph Sensing ◽  
Nitrogen Doped ◽  
Multicolor Imaging ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon dots exhibit a distinct pH-sensitive/excitation-dependent photoluminescence emission feature within pH 4.0–8.0, facilitating intracellular pH sensing and multicolor imaging of live HeLa cells.

Synthesis of Multi-Color Fluorescent Carbon Dots From Mint Leaves: A Robust Bioimaging Agent with Potential Antioxidant Activity

2020 ◽  
Vol 20 (10) ◽  
pp. 6305-6316 ◽  
Author(s):  
Sadia Shahid ◽  
Shanid Mohiyuddin ◽  
Gopinath Packirisamy
Keyword(s):  
Antioxidant Activity ◽  
Carbon Dots ◽  
Practical Implication ◽  
Chemical Properties ◽  
Surface States ◽  
Ultra Violet ◽  
Antioxidant Property ◽  
X Ray ◽  
Transmission Electron ◽  
Multiple Routes

Carbon dots (C-dots), a promising luminescent nanomaterial with exceptional physico-chemical properties gaining enormous attention in recent years. Carbon dots having enhanced biocompatibility and multiple routes of synthesis offers a promising substitute to luminescent quantum dots (QD). Further, wavelength-controlled emission features of C-dots proved as a good candidate in the biolabeling applications. Herein, we are reporting a facile and one-step hydrothermal synthesis of biocompatible multi-color, Polyethyleneimine (PEI) surface passivated C-dots (CDP) from mint leaves as a green source. The morphological and optical properties of C-dots have been extensively studied by Zeta-sizer, Transmission electron microscopy (TEM), X-ray diffraction (XRD) pattern, Ultra violet (UV)-visible spectroscopy and fluorescence spectroscopic analysis. Furthermore, Fourier transform infrared (FT-IR) and X-Ray Photoelectron Spectroscopic (XPS) analysis have been performed for the understanding of surface states and chemical composition of C-dots. A comparative analysis in the biolabeling potentials of non-passivated C-dots (CD) and CDP was conducted in the breast cancer (MCF-7) cells and the concentration dependent cytotoxicity was estimated. Further, an enhanced antioxidant property was showed by CDP as compared to CD. In the present study, a practical implication of C-dots synthesized from a herbal source (mint) to serve as a novel agent for various biolabeling applications and antioxidant activity have been experimentally resolved. As synthesized CD and CDP can be, serve as better alternatives for imaging probe with improved biocompatibility.

scholarly journals Solvent Effects on Fluorescence Properties of Carbon Dots: Implications for Multicolor Imaging

ACS Omega ◽  
2021 ◽  
Vol 6 (40) ◽  
pp. 26499-26508
Author(s):  
Xiaomin Huo ◽  
Honglie Shen ◽  
Rui Liu ◽  
Jing Shao
Keyword(s):  
Solvent Effects ◽  
Carbon Dots ◽  
Fluorescence Properties ◽  
Multicolor Imaging

Effects of Heteroatom Doping of Carbon Dots from Sugar on Optical Properties, Phenolic Content, Antioxidant Activity, Photostability, and Cytotoxicity

2021 ◽  
Vol 6 (15) ◽  
pp. 3597-3604
Author(s):  
Monthakarn Supjaroenpisan ◽  
Rattanavinan Hanchaina ◽  
Thaned Kangsamaksin ◽  
Peerasak Paoprasert
Keyword(s):  
Antioxidant Activity ◽  
Optical Properties ◽  
Carbon Dots ◽  
Phenolic Content ◽  
Heteroatom Doping
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