Journal ArticleDOI
Turn-off fluorescence sensor for the detection of ferric ion in water using green synthesized N-doped carbon dots and its bio-imaging.
Thomas Nesakumar Jebakumar Immanuel Edison,Raji Atchudan,Jae-Jin Shim,Senthilkumar Kalimuthu,Byeong-Cheol Ahn,Yong Rok Lee +5 more
TLDR
The synthesized N-CDs were used as a fluorescent probe towards the selective and sensitive detection of biologically important Fe(3+) ions in water by fluorescence spectroscopy and for bio-imaging of MDA-MB-231 cells.Abstract:
This paper reports turn-off fluorescence sensor for Fe3 + ion in water using fluorescent N-doped carbon dots as a probe. A simple and efficient hydrothermal carbonization of Prunus avium fruit extract for the synthesis of fluorescent nitrogen-doped carbon dots (N-CDs) is described. This green approach proceeds quickly and provides good quality N-CDs. The mean size of synthesized N-CDs was approximately 7 nm calculated from the high-resolution transmission electron microscopic images. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy revealed the presence of –OH, –NH2, –COOH, and –CO functional groups over the surface of CDs. The N-CDs showed excellent fluorescent properties, and emitted blue fluorescence at 411 nm upon excitation at 310 nm. The calculated quantum yield of the synthesized N-CDs is 13% against quinine sulfate as a reference fluorophore. The synthesized N-CDs were used as a fluorescent probe towards the selective and sensitive detection of biologically important Fe3 + ions in water by fluorescence spectroscopy and for bio-imaging of MDA-MB-231 cells. The limit of detection (LOD) and the Stern–Volmer quenching constant for the synthesized N-CDs were 0.96 μM and 2.0958 × 103 M of Fe3 + ions. The green synthesized N-CDs are efficiently used as a promising candidate for the detection of Fe3 + ions and bio-imaging.read more
Citations
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Journal ArticleDOI
Review of Carbon and Graphene Quantum Dots for Sensing
TL;DR: The authors suggest that with the potential of these nanomaterials in sensing more research is needed on understanding their optical properties and why the synthetic methods influence their properties so much, into methods of surface functionalization that provide greater selectivity in sensing and into new sensing concepts that utilise the virtues of these nano-materials.
Journal ArticleDOI
Highly fluorescent nitrogen-doped carbon dots derived from Phyllanthus acidus utilized as a fluorescent probe for label-free selective detection of Fe 3+ ions, live cell imaging and fluorescent ink.
Raji Atchudan,Thomas Nesakumar Jebakumar Immanuel Edison,Kanikkai Raja Aseer,Suguna Perumal,Namachivayam Karthik,Yong Rok Lee +5 more
TL;DR: It is proved that synthesized FNCDs has durable fluorescence, soluble in water very well and thus act as a promising candidate for the diverse applications such as label-free sensitive and selective detection of Fe3+, fluorescent ink and cellular imaging with good biocompatibility and low cytotoxicity.
Journal ArticleDOI
Facile synthesis of N-doped carbon dots/g-C3N4 photocatalyst with enhanced visible-light photocatalytic activity for the degradation of indomethacin
Fengliang Wang,Ping Chen,Yiping Feng,Zhijie Xie,Yang Liu,Yuehan Su,Qianxin Zhang,Yingfei Wang,Kun Yao,Wenying Lv,Guoguang Liu +10 more
TL;DR: In this paper, a visible-light-driven N-doped carbon dot (NCDs)/g-C 3 N 4 composite was successfully synthesized by loading NCDs nanoparticles onto the interlayers and surface of g-C3 N 4 via a facile polymerized method.
Journal ArticleDOI
Red Emission B, N, S-co-Doped Carbon Dots for Colorimetric and Fluorescent Dual Mode Detection of Fe3+ Ions in Complex Biological Fluids and Living Cells
TL;DR: The designed nanosensor can be applied for efficient detection of intracellular Fe3+ with excellent biocompatibility and cellular imaging capability, and it holds great promise in biomedical applications.
Journal ArticleDOI
Carbon quantum dot-based nanoprobes for metal ion detection
TL;DR: Carbon quantum dots as discussed by the authors are a type of spherical or sphere-like nanoparticles of less than 10 nm in size and have been subsequently named as carbon quantum dots or carbon nanodots.
References
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Glowing Graphene Quantum Dots and Carbon Dots: Properties, Syntheses, and Biological Applications
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