Preparation and Fluorescent Wavelength Control of Multi-Color Nitrogen-Doped Carbon Nano-Dots

It is known that, by taking advantage of heteroatom doping, the electronic states and transition channels in carbon nano-dots (CNDs) can be effectively modulated. Thus, the photoluminescence (PL) properties of CNDs can be changed. For potential applications of CNDs as advanced materials for optoelectronic devices, it is important and significant to develop the practical techniques for doping heteroatoms into CNDs. In this work, we synthesize the multi-color fluorescent by using a fast and effective microwave method where the CNDs are nitrogen-doped. We examine the influence of different ratios of the raw materials on the structure and optical properties of N-CNDs. The results show that the prepared N-CNDs can generate blue (445 nm), green (546 nm), and orange (617 nm) fluorescence or PL with the mass ratio of the raw materials at 1:1, 1:2 and 1:3, respectively. We find that the N content in N-CNDs leads to different surface/edge states in n−π∗ domain. Thus, the wavelength of the PL emission from N-CNDs can be tuned via controlling the N concentration doped into the CNDs. Moreover, it is shown that the intensity of the PL from N-CNDs is mainly positively related to the content of C-O groups attached on the surface/edges of the N-CNDs. This study provides an effective experimental method and technical way to improve the fluorescent emission, and to modulate the color of the PL emission from CNDs.

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

Journal of Materials Chemistry C ◽

10.1039/c6tc02853e ◽

2016 ◽

Vol 4 (38) ◽

pp. 9027-9035 ◽

Cited By ~ 66

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.

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An Electrochemical Sensor Based on a Nitrogen-Doped Carbon Material and PEI Composites for Sensitive Detection of 4-Nitrophenol

Nanomaterials ◽

10.3390/nano12010086 ◽

2021 ◽

Vol 12 (1) ◽

pp. 86

Author(s):

Xue Nie ◽

Peihong Deng ◽

Haiyan Wang ◽

Yougen Tang

Keyword(s):

Electrochemical Sensor ◽

Signal To Noise Ratio ◽

High Sensitivity ◽

Environmental Water ◽

Fast Response ◽

Nitrogen Doped ◽

Potential Applications ◽

Good Repeatability ◽

Nitrogen Doped Carbon ◽

Optimized Conditions

A glassy carbon electrode (GCE) was modified with nitrogen-doped carbon materials (NC) and polyethyleneimine (PEI) composites to design an electrochemical sensor for detecting 4-nitrophenol (4-NP). The NC materials were prepared by a simple and economical method through the condensation and carbonization of formamide. The NC materials were dispersed in a polyethyleneimine (PEI) solution easily. Due to the excellent properties of NC and PEI as well as their synergistic effect, the electrochemical reduction of the 4-NP on the surface of the NC–PEI composite modified electrode was effectively enhanced. Under the optimized conditions, at 0.06–10 μM and 10–100 μM concentration ranges, the NC–PEI/GCE sensor shows a linear response to 4-NP, and the detection limit is 0.01 μM (the signal-to-noise ratio is three). The reliability of the sensor for the detection of 4-NP in environmental water samples was successfully evaluated. In addition, the sensor has many advantages, including simple preparation, fast response, high sensitivity and good repeatability. It may be helpful for potential applications in detecting other targets.

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Nitrogen doped carbon quantum dots demonstrate no toxicity under in vitro conditions in a cervical cell line and in vivo in Swiss albino mice

Toxicology Research ◽

10.1039/c8tx00260f ◽

2019 ◽

Vol 8 (3) ◽

pp. 395-406 ◽

Cited By ~ 13

Author(s):

Vimal Singh ◽

Sunayana Kashyap ◽

Umakant Yadav ◽

Anchal Srivastava ◽

Ajay Vikram Singh ◽

...

Keyword(s):

Quantum Dots ◽

Cell Line ◽

Biomedical Imaging ◽

Carbon Quantum Dots ◽

Nitrogen Doped ◽

Cervical Cell ◽

Potential Applications ◽

Nitrogen Doped Carbon

Carbon quantum dots (CQDs) and their derivatives have potential applications in the field of biomedical imaging.

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Synthesis and electrochemical applications of nitrogen-doped carbon nanomaterials

Nanotechnology Reviews ◽

10.1515/ntrev-2013-0007 ◽

2013 ◽

Vol 2 (6) ◽

pp. 615-635 ◽

Cited By ~ 35

Author(s):

Saadat Majeed ◽

Jianming Zhao ◽

Ling Zhang ◽

Saima Anjum ◽

Zhongyuan Liu ◽

...

Keyword(s):

Carbon Nanomaterials ◽

Carbon Materials ◽

Synthetic Methods ◽

Nitrogen Doped ◽

Potential Applications ◽

Nitrogen Doped Carbon ◽

Doped Nanomaterials ◽

Experimental And Theoretical Studies ◽

Carbon Network ◽

Pyridinic N

AbstractNitrogen doping is an effective way to tailor the properties of the shaped carbon materials, including the nanotubes, nanocups, nanofibers, as well as the nanorods, and render their potential use for various applications. The common bonding configurations obtained on the N insertion is the pyridinic N and pyrrolic N, which impart the characteristic properties to these carbon materials. This review will focus on the nitrogen-doped carbon materials, the doping effect on the electrochemistry of the doped nanomaterials, and the various synthetic methods to introduce N into the carbon network. The potential applications of the N-doped materials are also reviewed on the basis of the experimental and theoretical studies in electrochemistry.

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Production of nitrogen-doped carbon quantum dots with controllable emission wavelength, excellent sensing of Fe3+ in aqueous solution, and potential application for stealth quick response coding in the visible regime

RSC Advances ◽

10.1039/d1ra05106g ◽

2021 ◽

Vol 11 (54) ◽

pp. 34117-34124

Author(s):

Yu-Hsun Su ◽

Hsuan-Hao Huang ◽

Chao-Chi Tseng ◽

Hsin-Jung Tsai ◽

Wen-Kuang Hsu

Keyword(s):

Quantum Dots ◽

Carbon Quantum Dots ◽

Quick Response ◽

Transfer Printing ◽

Environmental Friendliness ◽

Nitrogen Doped ◽

Thermal Transfer ◽

Potential Applications ◽

Nitrogen Doped Carbon ◽

Response Coding

Carbon quantum dots have received attention due to their environmental friendliness, low biological toxicity and production cost. Polymer–CQD composite fibers, detection of Fe3+, and stealthy fluorescent labels made by thermal transfer printing are potential applications.

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Dual catalytic functions of biomimetic, atomically dispersed iron-nitrogen doped carbon catalysts for efficient enzymatic biofuel cells

Chemical Engineering Journal ◽

10.1016/j.cej.2019.122679 ◽

2020 ◽

Vol 381 ◽

pp. 122679 ◽

Cited By ~ 9

Author(s):

Jungyeon Ji ◽

Jinwoo Woo ◽

Yongjin Chung ◽

Sang Hoon Joo ◽

Yongchai Kwon

Keyword(s):

Biofuel Cells ◽

Nitrogen Doped ◽

Enzymatic Biofuel Cells ◽

Carbon Catalysts ◽

Nitrogen Doped Carbon ◽

Catalytic Functions

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Advances in Synthesis of π-Extended Benzosilole Derivatives and Their Analogs

Molecules ◽

10.3390/molecules25030548 ◽

2020 ◽

Vol 25 (3) ◽

pp. 548

Author(s):

Tuan Thanh Dang ◽

Hue Minh Thi Nguyen ◽

Hien Nguyen ◽

Tran Ngoc Dung ◽

Minh Tho Nguyen ◽

...

Keyword(s):

Solar Cells ◽

Physical Properties ◽

Electronic Materials ◽

Advanced Materials ◽

Potential Applications

Benzosiloles and their π-extended derivatives are present in many important advanced materials due to their excellent physical properties. Especially, they have found many potential applications in the development of novel electronic materials such as OLEDs, semiconductors and solar cells. In this review, we have summarized several main approaches to construct (di)benzosilole derivatives and (benzo)siloles fused to aromatic five- and six-membered heterocycles.

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