Multi-doped carbon dots with ratiometric pH sensing properties for monitoring enzyme catalytic reactions

2016 ◽  
Vol 52 (59) ◽  
pp. 9247-9250 ◽  
Author(s):  
Ya Wang ◽  
Linlin Lu ◽  
Hui Peng ◽  
Jie Xu ◽  
Fengyang Wang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Solvothermal Method ◽  
Catalytic Reactions ◽  
Ph Sensing ◽  
One Pot ◽  
Sensing Properties ◽  
Ph Probe ◽  
Doped Carbon Dots ◽  
Ratiometric Ph Sensing

Multi-doped carbon dots (C-dots) were synthesized by a facile one-pot solvothermal method, and the C-dots could be used as a ratiometric pH probe directly without integrating with other dyes, which was demonstrated by monitoring the proton-producing enzyme catalytic reactions.

scholarly journals Facile Hydrothermal and Solvothermal Synthesis and Characterization of Nitrogen-Doped Carbon Dots from Palm Kernel Shell Precursor

2021 ◽  
Vol 11 (4) ◽  
pp. 1630
Author(s):  
Yakubu Newman Monday ◽  
Jaafar Abdullah ◽  
Nor Azah Yusof ◽  
Suraya Abdul Rashid ◽  
Rafidah Hanim Shueb
Keyword(s):  
Carbon Dots ◽  
Batch Reactor ◽  
Average Particle Size ◽  
Research Work ◽  
Palm Kernel ◽  
Average Particle ◽  
One Pot ◽  
Palm Kernel Shell ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Carbon dots (CDs), a nanomaterial synthesized from organic precursors rich in carbon content with excellent fluorescent property, are in high demand for many purposes, including sensing and biosensing applications. This research focused on preparing CDs from natural and abundant waste, palm kernel shells (PKS) obtained from palm oil biomass, aiming for sensing and biosensing applications. Ethylenediamine and L-phenylalanine doped CDs were produced via the hydrothermal and solvothermal methods using one-pot synthesis techniques in an autoclave batch reactor. The as-prepared N-CDs shows excellent photoluminescence (PL) property and a quantum yield (QY) of 13.7% for ethylenediamine (EDA) doped N-CDs (CDs-EDA) and 8.6% for L-phenylalanine (L-Ph) doped N-CDs (CDs-LPh) with an excitation/emission wavelength of 360 nm/450 nm. The transmission electron microscopy (TEM) images show the N-CDs have an average particle size of 2 nm for both CDs. UV-Visible spectrophotometric results showed C=C and C=O transition. FTIR results show and confirm the presence of functional groups, such as -OH, -C=O, -NH2 on the N-CDs, and the X-ray diffraction pattern showed that the N-CDs were crystalline, depicted with sharp peaks. This research work demonstrated that palm kernel shell biomass often thrown away as waste can produce CDs with excellent physicochemical properties.

A FRET based pH probe with a broad working range applicable to referenced ratiometric dual wavelength and luminescence lifetime read out

2015 ◽  
Vol 51 (28) ◽  
pp. 6145-6148 ◽  
Author(s):  
Robert J. Meier ◽  
Johann M. B. Simbürger ◽  
Tero Soukka ◽  
Michael Schäferling
Keyword(s):  
Dynamic Range ◽  
Dual Wavelength ◽  
Luminescence Lifetime ◽  
Ph Sensing ◽  
Ph Probe ◽  
Broad Dynamic Range ◽  
Europium Chelate ◽  
Ratiometric Ph Sensing

A FRET system composed of a europium chelate and carboxynaphthofluorescein enables ratiometric pH sensing with an exceptionally broad dynamic range.

Dual-emission carbon dots as biocompatible nanocarrier for in vitro/in vivo cell microenvironment ratiometric pH sensing in broad range

2019 ◽  
Vol 16 (10) ◽  
pp. 2081-2092 ◽  
Author(s):  
Somayeh Hamd-Ghadareh ◽  
Abdollah Salimi ◽  
Fardin Fathi ◽  
Farzad Soleimani
Keyword(s):  
Carbon Dots ◽  
Ph Sensing ◽  
Dual Emission ◽  
Cell Microenvironment ◽  
Ratiometric Ph Sensing

Photoluminescence properties of N-doped carbon dots prepared in different solvents and applications in pH sensing

2017 ◽  
Vol 53 (4) ◽  
pp. 2424-2433 ◽  
Author(s):  
Mei Yang ◽  
Baoyan Li ◽  
Kailiang Zhong ◽  
Yun Lu
Keyword(s):  
Carbon Dots ◽  
Ph Sensing ◽  
Photoluminescence Properties ◽  
Doped Carbon Dots

scholarly journals Green Synthesis of Carbon Dots from Grapefruit and Its Fluorescence Enhancement

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Xinzhu Huo ◽  
Yuxuan He ◽  
Shiqi Ma ◽  
Yingying Jia ◽  
Jiaming Yu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Carbon Sources ◽  
Carbon Quantum Dots ◽  
One Pot ◽  
Transmission Electron ◽  
Three Samples ◽  
Structure Morphology ◽  
Ir Transmission ◽  
Ft Ir ◽  
Doped Carbon Dots

In this study, undoped carbon quantum dots (UCQDs, UCQDs-peel) and N-doped carbon dots (NCQDs) were prepared by a facile one-pot environmentally friendly hydrothermal method using grapefruit as carbon sources in the absence and presence of area, respectively. The structure, morphology, and fluorescence properties of three samples were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), and photoluminescence (PL). It was found that three types of CQDs could emit blue fluorescence with different intensities when irradiated with ultraviolet light. Compared to the luminescence properties of UCQDs, NCQDs, and UCQDs-peel, it can be seen that the fluorescence intensity of NCQDs was strongest due to the presence of NH and C-N bonds.

One-pot synthesis of nitrogen and sulfur co-doped carbon dots and its application for sensor and multicolor cellular imaging

2017 ◽  
Vol 485 ◽  
pp. 167-174 ◽  
Author(s):  
Jiucun Chen ◽  
Jianhua Liu ◽  
Junzhi Li ◽  
Liqun Xu ◽  
Yajuan Qiao
Keyword(s):  
Carbon Dots ◽  
Cellular Imaging ◽  
One Pot ◽  
One Pot Synthesis ◽  
Doped Carbon Dots ◽  
Co Doped

One-pot synthesis of N-doped carbon dots with tunable luminescence properties

2012 ◽  
Vol 22 (33) ◽  
pp. 16714 ◽  
Author(s):  
Yan-Qing Zhang ◽  
De-Kun Ma ◽  
Yan Zhuang ◽  
Xi Zhang ◽  
Wei Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Luminescence Properties ◽  
One Pot ◽  
One Pot Synthesis ◽  
Doped Carbon Dots

Low temperature synthesis of phosphorous and nitrogen co-doped yellow fluorescent carbon dots for sensing and bioimaging

2015 ◽  
Vol 3 (33) ◽  
pp. 6813-6819 ◽  
Author(s):  
Xiaojuan Gong ◽  
Wenjing Lu ◽  
Yang Liu ◽  
Zengbo Li ◽  
Shaomin Shuang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Ph Sensing ◽  
Low Temperature Synthesis ◽  
Low Toxicity ◽  
Doped Carbon Dots ◽  
Fluorescent Carbon Dots ◽  
Co Doped ◽  
High Output

A simple and high-output strategy for the fabrication of yellow fluorescent phosphorous and nitrogen co-doped carbon dots (P,N-CDs) is developed. P,N-CDs possess distinctive photoluminescence properties, low toxicity, and biocompatible. P,N-CDs are potentially useful for versatile applications such as pH sensing, in vitro and in vivo imaging.

scholarly journals Nitrogen-doped carbon dots for sensitive detection of ferric ions and monohydrogen phosphate by the naked eye and imaging in living cells

2021 ◽  
Author(s):  
Qiaoling Liu ◽  
Borong Ren ◽  
Kaixin Xie ◽  
Yanmei Yan ◽  
Ruirong Liu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Carbon Dots ◽  
Living Cells ◽  
Sensitive Detection ◽  
Ferric Ions ◽  
One Pot ◽  
Nitrogen Doped ◽  
Naked Eye ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Nitrogen doped carbon dots (N-CDs) have been prepared via a one-pot hydrothermal method by using formamide and o-phenylenediamine as the carbon precursors for Fe3+ and HPO42− detection.

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