Concentration-dependent multicolor fluorescent carbon dots for colorimetric and fluorescent bimodal detections of Fe3+ and l-ascorbic acid

2019 ◽  
Vol 11 (5) ◽  
pp. 669-676 ◽  
Author(s):  
Lihong Shi ◽  
Zhipeng Hou ◽  
Caihong Zhang ◽  
Guomei Zhang ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Hydrothermal Method ◽  
Carbon Dots ◽  
Starting Material ◽  
One Step ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

We present a green and facile strategy for fabrication of concentration-dependent multicolor fluorescent carbon dots (CDs) by using coffee, salvia, and urea as the starting material via a one-step hydrothermal method.

One-step synthesis of fluorescent carbon dots for imaging bacterial and fungal cells

2015 ◽  
Vol 7 (6) ◽  
pp. 2373-2378 ◽  
Author(s):  
Betha Saineelima B. Kasibabu ◽  
Stephanie L. D'souza ◽  
Sanjay Jha ◽  
Rakesh Kumar Singhal ◽  
Hirakendu Basu ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Hydrothermal Method ◽  
Carbon Dots ◽  
Punica Granatum ◽  
Fusarium Avenaceum ◽  
One Step ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

In this work, fluorescent carbon dots (C-dots) were synthesized using a hydrothermal method with Punica granatum (pomegranate) fruits as precursors, and were then used as probes for imaging of bacterial (Pseudomonas aeruginosa) and fungal (Fusarium avenaceum) cells.

Highly sensitive fluorescent carbon dots probe with ratiometric emission for the determination of ClO−

The Analyst ◽  
2020 ◽  
Vol 145 (6) ◽  
pp. 2212-2218 ◽  
Author(s):  
Huilin Zhang ◽  
Yifang Gao ◽  
Yuan Jiao ◽  
Wenjing Lu ◽  
Shaomin Shuang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Carbon Dots ◽  
Highly Sensitive ◽  
One Step ◽  
Doped Carbon Dots ◽  
Fluorescent Carbon Dots ◽  
Co Doped ◽  
Fluorescent Carbon

A ratiometric fluorescent N,S co-doped carbon dots (N,S-CD) probe for ClO− has been facilely obtained via a one-step hydrothermal method.

Nitrogen-doped carbon dots from Hutai-8 grape skin and their application in Hg2+ detection

2020 ◽  
Vol 16 ◽  
Author(s):  
Pan Zhang ◽  
Shun-Sheng Zhao ◽  
JiaJia Wang ◽  
Xiang Rong Liu
Keyword(s):  
Heavy Metal ◽  
Carbon Source ◽  
Fluorescence Quenching ◽  
Hydrothermal Method ◽  
Water Samples ◽  
Carbon Dots ◽  
Mercury Ions ◽  
Grape Skin ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Background: In recent years, environmental pollution and heavy metal pollution caused by rapid urbanization and industrialization have become increasingly serious. Among them, mercury (II) ion (Hg2+) is one of the highly toxic heavy metal ions, and its pollution comes from various natural resources and human activities. Therefore, people attach great importance to the development of analytical methods for effective analysis and sensitive detection of Hg2+ . Objective: Using grape skin as a green and environmental friendly carbon source, to synthesize fluorescent carbon dots, and try to apply them to the detect the concentration of Hg2+ in water. Method: Using "Hutai No. 8" grape skin as carbon source, fluorescent carbon dots were synthesized by one-step hydrothermal method. Structure and fluorescent properties of the carbon dots were tested using TEM, XPS, XRD and other characterization instruments, and their utilization on detection of mercury ions in the actual water samples was explored. Results: The CDs had a particle size of about 4.8 nm and a spherical shape. There are N-H, C-N, C=O and other functional groups on the surface. It was found that Hg2+ has obvious fluorescence quenching effect on CDs, and thus CDs fluorescence quenching method to detect the concentration Hg2+ was established, and the detection limit is 3.7 μM, which could be applied to test the concentration of Hg2+ in water samples. Conclusion: Using grape skin as carbon source, fluorescent carbon dots were successfully synthesized by hydrothermal method. Carbon dots were used to detect mercury ions in water, and a method for detecting mercury ions in actual water samples was established.

From coconut petiole residues to fluorescent carbon dots via a green hydrothermal method for Fe3+ detection

Cellulose ◽  
2021 ◽  
Vol 28 (3) ◽  
pp. 1647-1661
Author(s):  
Shiyu Gao ◽  
Xi Wang ◽  
Nan Xu ◽  
Hailan Lian ◽  
Li Xu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Carbon Dots ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

scholarly journals Synthesis of Fluorescent Carbon Dots and Their Application in Ascorbic Acid Detection

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1246
Author(s):  
Tengfei Wang ◽  
Hui Luo ◽  
Xu Jing ◽  
Jiali Yang ◽  
Meijun Huo ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Fluorescence Intensity ◽  
Carbon Dots ◽  
Ph Dependence ◽  
Scale Up ◽  
Water Soluble ◽  
Jujube Fruit ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Water-soluble fluorescent carbon dots (CDs) were synthesized by a hydrothermal method using citric acid as the carbon source and ethylenediamine as the nitrogen source. The repeated and scale-up synthetic experiments were carried out to explore the feasibility of macroscopic preparation of CDs. The CDs/Fe3+ composite was prepared by the interaction of the CDs solution and Fe3+ solution. The optical properties, pH dependence and stability behavior of CDs or the CDs/Fe3+ composite were studied by ultraviolet spectroscopy and fluorescence spectroscopy. Following the principles of fluorescence quenching after the addition of Fe3+ and then the fluorescence recovery after the addition of asorbic acid, the fluorescence intensity of the carbon dots was measured at λex = 360 nm, λem = 460 nm. The content of ascorbic acid was calculated by quantitative analysis of the changing fluorescence intensity. The CDs/Fe3+ composite was applied to the determination of different active molecules, and it was found that the composite had specific recognition of ascorbic acid and showed an excellent linear relationship in 5.0–350.0 μmol·L−1. Moreover, the detection limit was 3.11 μmol·L−1. Satisfactory results were achieved when the method was applied to the ascorbic acid determination in jujube fruit. The fluorescent carbon dots composites prepared in this study may have broad application prospects in a rapid, sensitive and trace determination of ascorbic acid content during food processing.

A one-step synthesis of novel high pH-sensitive nitrogen-doped yellow fluorescent carbon dots and their detection application in living cells

2019 ◽  
Vol 11 (44) ◽  
pp. 5711-5717
Author(s):  
Lian Shen ◽  
Changjun Hou ◽  
Jaiwei Li ◽  
Xianfeng Wang ◽  
Yanan Zhao ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Disease Diagnosis ◽  
Living Cells ◽  
Ph Sensitive ◽  
Cellular Functions ◽  
High Ph ◽  
Nitrogen Doped ◽  
One Step ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Monitoring the pH in living cells is of great significance for a deeper understanding of cellular functions for effective disease diagnosis.

Highly luminescent N-doped carbon dots as a fluorescence detecting platform for Fe3+ in solutions and living cells

The Analyst ◽  
2020 ◽  
Vol 145 (14) ◽  
pp. 4931-4936 ◽  
Author(s):  
Huajuan Deng ◽  
Chang Tian ◽  
Zhiwen Gao ◽  
Shu-Wei Chen ◽  
Yang Li ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hydrothermal Method ◽  
Carbon Dots ◽  
Living Cells ◽  
Simple Hydrothermal Method ◽  
Doped Carbon Dots ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

In this study, novel fluorescent carbon dots were prepared via a simple hydrothermal method for the detection of Fe+3 ions in aqueous solutions and imaging in living cells.

Ultrasonic one-step synthesis of biocompatible yellow-green fluorescent carbon dots

2013 ◽  
Vol 43 (7) ◽  
pp. 895-900 ◽  
Author(s):  
YuanFang LI ◽  
JiaJia ZHENG ◽  
Hui LIU ◽  
XiaoXi YANG ◽  
ChengZhi HUANG
Keyword(s):  
Carbon Dots ◽  
One Step ◽  
Green Fluorescent ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon
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