scholarly journals Fluorescent carbon dots with excellent moisture retention capability for moisturizing lipstick

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Chen Dong ◽  
Mingsheng Xu ◽  
Shuna Wang ◽  
Menghui Ma ◽  
Ozioma U. Akakuru ◽  
...  
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Chemical Processes ◽  
Moisture Retention ◽  
Low Toxicity ◽  
Nano Additives ◽  
First Time ◽  
The Relationship ◽  
Fluorescent Carbon Dots ◽  
Huge Challenge

AbstractLong-lasting moisture retention is a huge challenge to humectants, and effective methods or additives for promote these functions are limited, especially nano-additives. Carbon dots (CDs) have attracted increasing research interest due to its ultra-small size, excellent optical properties and low toxicity, etc. However, most of researches have been focused on the photoexcited CDs and its subsequent photophysical and chemical processes, such as photoluminescence, photodynamic, photothermal and photocatalytic behavior. The intrinsic chemo-physical properties of the pristine CDs are not fully explored. Here, we report an excellent moisture retention capability of a new carmine cochineal-derived CDs (Car-CDs) for the first time. The relationship between the structure of Car-CDs and its moisture retention capability is revealed. More interestingly, the effective applications of Car-CDs in moisturizing lipstick are demonstrated. This work expands the research and application of CDs into a broad, new area, potentially in skin care.

scholarly journals Optical Properties of Carbon Dots: A Review

2020 ◽  
Vol 1 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Mengli Liu
Keyword(s):  
Carbon Dots ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Electron Transition ◽  
Absorption Properties ◽  
Edge Defects ◽  
Low Toxicity ◽  
The Common ◽  
The Relationship ◽  
Fluorescent Carbon Dots

Fluorescent carbon dots (CDs) have attracted increasing attention in recent years owing to their most significant advantages in terms of low toxicity, resistance to photobleaching, small size, easy functionalization, eco-friendly synthesis and diverse imaging capabilities. However, the unclear optical mechanism of CDs greatly limits their further application. Understanding the optical property of CDs is of great significance for controllable development of top-designed CDs with functional purposes. In this review, we firstly summarize that light absorption properties of CDs, and demonstrate the relationship between the absorption spectrum and electron transition of both the core and shell of CDs. Furthermore, we summarize the common fluorescent mechanisms of CDs, including surface state, quantum confinement effect, conjugated structures, self-trapped excitons, edge defects, free zigzag sites, and multi-emissive centers. Finally, we also discuss the phosphorescence properties of CDs. This review gives new insights into how to tune the fluorescence and phosphorescence of the CDs.

Carbon Dots for Bacterial Detection and Antibacterial Applications-A Minireview

2020 ◽  
Vol 25 (46) ◽  
pp. 4848-4860 ◽  
Author(s):  
Anisha Anand ◽  
Gopinathan Manavalan ◽  
Ranju Prasad Mandal ◽  
Huan-Tsung Chang ◽  
Yi-Ru Chiou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Antibacterial Effect ◽  
Bacterial Detection ◽  
High Brightness ◽  
Photo Catalysis ◽  
Wide Range ◽  
Prevention And Treatment ◽  
Low Toxicity ◽  
Conventional Antibiotics

: The prevention and treatment of various infections caused by microbes through antibiotics are becoming less effective due to antimicrobial resistance. Researches are focused on antimicrobial nanomaterials to inhibit bacterial growth and destroy the cells, to replace conventional antibiotics. Recently, carbon dots (C-Dots) become attractive candidates for a wide range of applications, including the detection and treatment of pathogens. In addition to low toxicity, ease of synthesis and functionalization, and high biocompatibility, C-Dots show excellent optical properties such as multi-emission, high brightness, and photostability. C-Dots have shown great potential in various fields, such as biosensing, nanomedicine, photo-catalysis, and bioimaging. This review focuses on the origin and synthesis of various C-Dots with special emphasis on bacterial detection, the antibacterial effect of CDots, and their mechanism.

Carbon dots derived from Fusobacterium nucleatum for intracellular determination of Fe3+ and bioimaging both in vitro and in vivo

2021 ◽  
Author(s):  
Lijuan Liu ◽  
Shengting Zhang ◽  
Xiaodan Zheng ◽  
Hongmei Li ◽  
Qi Chen ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Fusobacterium Nucleatum ◽  
Living Cells ◽  
First Time ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Fusobacterium nucleatum has been employed for the first time to synthesize fluorescent carbon dots which could be applied for the determination of Fe3+ ions in living cells and bioimaging in vitro and in vivo with excellent biocompatibility.

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 Carbon Dots: Synthesis, Properties and Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3419
Author(s):  
Lin Cui ◽  
Xin Ren ◽  
Mengtao Sun ◽  
Haiyan Liu ◽  
Lixin Xia
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Research Field ◽  
Potential Development ◽  
Synthesis Properties ◽  
Photo Induced Electron Transfer ◽  
Low Toxicity ◽  
Synthesis Routes ◽  
Carbon Based Nanomaterials ◽  
Photocatalytic Applications

Carbon dots (CDs) are known as the rising star of carbon-based nanomaterials and, by virtue of their unique structure and fascinating properties, they have attracted considerable interest in different fields such as biological sensing, drug delivery, photodynamic therapy, photocatalysis, and solar cells in recent years. Particularly, the outstanding electronic and optical properties of the CDs have attracted increasing attention in biomedical and photocatalytic applications owing to their low toxicity, biocompatibility, excellent photostability, tunable fluorescence, outstanding efficient up-converted photoluminescence behavior, and photo-induced electron transfer ability. This article reviews recent progress on the synthesis routes and optical properties of CDs as well as biomedical and photocatalytic applications. Furthermore, we discuss an outlook on future and potential development of the CDs based biosensor, biological dye, biological vehicle, and photocatalysts in this booming research field.

Highly fluorescent carbon dots as novel theranostic agents for biomedical applications

Nanoscale ◽  
2021 ◽  
Author(s):  
Jiafeng Wan ◽  
Xiaoyuan Zhang ◽  
Kun Fu ◽  
Xin Zhang ◽  
Li Shang ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Biomedical Applications ◽  
Photoluminescence Properties ◽  
Physicochemical Features ◽  
Low Toxicity ◽  
Good Biocompatibility ◽  
Theranostic Agents ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

As an emerging fluorescent nanomaterial, carbon dots (CDs) exhibit many attractive physicochemical features, including excellent photoluminescence properties, good biocompatibility, low toxicity and the ability to maintain the unique properties of...

scholarly journals Fluorescent carbon dots: rational synthesis, tunable optical properties and analytical applications

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 40973-40989 ◽  
Author(s):  
Yifan Wang ◽  
Yanwu Zhu ◽  
Shaoming Yu ◽  
Changlong Jiang
Keyword(s):  
Optical Properties ◽  
Carbon Dots ◽  
Sensing Applications ◽  
Analytical Applications ◽  
Tunable Optical Properties ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

This review summarizes current advances on the design and the employment of fluorescent carbon dots in sensing applications, especially from the point of analytical view.

scholarly journals Effect of heteroatoms on the optical properties and enzymatic activity of N-doped carbon dots

RSC Advances ◽  
2021 ◽  
Vol 11 (31) ◽  
pp. 18776-18782
Author(s):  
Ahyun Lee ◽  
Sohee Yun ◽  
Eun Soo Kang ◽  
Jung Wan Kim ◽  
Jeong Ho Park ◽  
...  
Keyword(s):  
Optical Properties ◽  
Enzymatic Activity ◽  
Physicochemical Properties ◽  
Chemical Bonding ◽  
Carbon Dots ◽  
Dopant Content ◽  
Optical Applications ◽  
Doped Carbon Dots ◽  
The Relationship

The characteristics of N-CDs suitable for their optical applications or for use as nanozymes were demonstrated by rationalizing the relationship between the dopant content (e.g., the amount of doped N and types of chemical bonding) and physicochemical properties.

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