scholarly journals A Facile Synthesis of Highly Nitrogen-Doped Carbon Dots for Imaging and Detection in Biological Samples

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Qianchun Zhang ◽  
Siqi Xie ◽  
Yanqun Yang ◽  
Yun Wu ◽  
Xingyi Wang ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Fluorescence Quantum Yield ◽  
Fluorescence Probe ◽  
Fluorescence Emission ◽  
Carbon Quantum Dots ◽  
Nitrogen Doped ◽  
Low Toxicity ◽  
High Fluorescence ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A facile, green, and high-output hydrothermal synthesis was proposed for the fabrication of highly fluorescent nitrogen-doped carbon quantum dots (N-doped CDs). The nitrogen content in N-doped CDs reached 19.2% and demonstrated strong blue fluorescence emission was obtained with fluorescence quantum yield (QY) of up to 32.9%, which exhibit high fluorescence quantum yield, high photostability, and excellent biocompatibility. The N-doped CDs possess high photostability, low toxicity, and excellent biocompatibility, based on which the N-doped CDs were successfully applied as a fluorescence probe for cell imaging. Moreover, it was then successfully demonstrated for sensitive and selective detection of Fe3+ in serum.

The Detection of Osthole and Application of Cell Imaging Based on Nitrogen-Doped Carbon Dots

NANO ◽  
2020 ◽  
Vol 15 (02) ◽  
pp. 2050025
Author(s):  
Ning Wang ◽  
Xuefang Yang ◽  
Haojiang Wang ◽  
Liping Xie ◽  
Weihua Jia ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Fluorescence Probe ◽  
Experimental Conditions ◽  
X Ray ◽  
Nitrogen Doped ◽  
High Fluorescence ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A fluorescence probe has been synthesized for the detection of osthole using the nitrogen-doped carbon dots (NCDs) as shown in Fig. 1. The NCDs were fully characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR). Under the optimal experimental conditions, the NCDs fluorescence probe was highly selective and sensitive to osthole. The linear response range for osthole was 5.0–75[Formula: see text][Formula: see text]M with a detection limit of 38[Formula: see text]nM. The mechanism of the interaction of osthole and NCDs was discussed. The fluorescence probe has been applied to the analysis of biological samples. The as-synthesized NCDs with high fluorescence intensity, low toxicity and good biocompatibility were applied to cell imaging.

Intense multi-state visible absorption and full-color luminescence of nitrogen-doped carbon quantum dots for blue-light-excitable solid-state-lighting

2016 ◽  
Vol 4 (38) ◽  
pp. 9027-9035 ◽  
Author(s):  
Daqin Chen ◽  
Weiwei Wu ◽  
Yongjun Yuan ◽  
Yang Zhou ◽  
Zhongyi Wan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Carbon Quantum Dots ◽  
Solid State Lighting ◽  
Visible Absorption ◽  
Nitrogen Doped ◽  
Full Color ◽  
Potential Applications ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon dots with multi-state visible absorption and full-color blue/yellow/red emissions are synthesized, and show potential applications in solid-state-lighting.

Multicolour nitrogen-doped carbon dots: tunable photoluminescence and sandwich fluorescent glass-based light-emitting diodes

Nanoscale ◽  
2017 ◽  
Vol 9 (45) ◽  
pp. 17849-17858 ◽  
Author(s):  
Yijun Zhang ◽  
Rongrong Yuan ◽  
Meiling He ◽  
Guangcai Hu ◽  
Jutao Jiang ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
Light Emitting Diodes ◽  
Ammonium Citrate ◽  
Tetraacetic Acid ◽  
Light Emitting ◽  
Nitrogen Doped ◽  
Fluorescent Quantum Yield ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

The first use of the combination of ammonium citrate (AC) and ethylenediamine tetraacetic acid (EDTA) as coordinating precursors for the synthesis of highly fluorescent (quantum yield = 67%) multicolour nitrogen-doped carbon dots (CDs) is reported.

Facile synthesis of water-soluble and biocompatible fluorescent nitrogen-doped carbon dots for cell imaging

The Analyst ◽  
2014 ◽  
Vol 139 (7) ◽  
pp. 1692-1696 ◽  
Author(s):  
Weiping Wang ◽  
Ya-Chun Lu ◽  
Hong Huang ◽  
Jiu-Ju Feng ◽  
Jian-Rong Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Cell Imaging ◽  
Water Soluble ◽  
Soluble Nitrogen ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Low Toxicity ◽  
Good Biocompatibility ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A simple and green hydrothermal method was developed for preparation of water-soluble nitrogen-doped carbon dots (N-CDs) from streptomycin. The prepared N-CDs reveal low toxicity, high stability and good biocompatibility, which can be used as fluorescent probes for cell imaging.

Nitrogen-doped carbon dots as a fluorescence probe suitable for sensing Fe3+ under acidic conditions

2016 ◽  
Vol 40 (12) ◽  
pp. 10213-10218 ◽  
Author(s):  
Guangming Li ◽  
Nan Lv ◽  
Wenzhi Bi ◽  
Jilin Zhang ◽  
Jiazuan Ni
Keyword(s):  
Carbon Dots ◽  
Fluorescence Probe ◽  
Low Ph ◽  
Primary Amines ◽  
Nitrogen Doped ◽  
Acidic Conditions ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

The N-CDs with primary amines and catechol groups on the surface serve as a fluorescence probe for sensing Fe3+ at low pH.

scholarly journals Synthesis of polyurethane-derived nitrogen-doped carbon dots for a high-performance fluorescence bioimaging probe

RSC Advances ◽  
2021 ◽  
Vol 11 (54) ◽  
pp. 34174-34180
Author(s):  
Fang-Jun Cao ◽  
Lu Wang ◽  
Cheng-Li Feng ◽  
Xiao Lin ◽  
Hui Feng
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Solvothermal Method ◽  
Carbon Quantum Dots ◽  
Soluble Nitrogen ◽  
Nitrogen Doped ◽  
Fluorescence Bioimaging ◽  
Polyurethane Sponge ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

A universal and robust strategy using polyurethane sponge as a precursor was developed to synthesize highly-soluble nitrogen-doped carbon quantum dots via a solvothermal method.

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