Carbon Dots from Turnip Juice: Synthesis, Characterization and Investigation of pH-Dependent Optical Properties

: 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.

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Tuning Optical Properties of Nitrogen-Doped Carbon Dots Through Fluorescence Resonance Energy Transfer Using Rhodamine B for Ratiometric Sensing of Mercury ion

Analytical Methods ◽

10.1039/d1ay00068c ◽

2021 ◽

Author(s):

Alagan Muthurasu ◽

V GANESH

Keyword(s):

Optical Properties ◽

Energy Transfer ◽

Rhodamine B ◽

Carbon Dots ◽

Resonance Energy Transfer ◽

Resonance Energy ◽

Nitrogen Doped ◽

Physical Chemical ◽

Doped Carbon Dots ◽

Nitrogen Doped Carbon

Carbon dots (CDs) exhibiting fluorescence property are generally derived from carbonaceous materials and possessing ultra small size with various exciting physical, chemical and photo-properties that have been used in many...

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Nonlinear optical properties of colloidal carbon nanoparticles: nanodiamonds and carbon dots

RSC Advances ◽

10.1039/c4ra04714a ◽

2014 ◽

Vol 4 (76) ◽

pp. 40152-40160 ◽

Cited By ~ 32

Author(s):

Irene Papagiannouli ◽

Athanasios B. Bourlinos ◽

Aristides Bakandritsos ◽

Stelios Couris

Keyword(s):

Optical Properties ◽

Carbon Dots ◽

Carbon Nanoparticles ◽

Nonlinear Optical ◽

Laser Excitation ◽

Optical Limiting ◽

Nonlinear Optical Properties ◽

Nlo Response ◽

Colloidal Carbon ◽

532 Nm

Nanodiamonds (NDs) and carbon-dots (CDs) suspensions exhibit significant NLO response under both ps and ns laser excitation. NDs exhibit important optical limiting action under nanosecond visible (532 nm) and infrared (1064 nm) laser excitation.

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Customized Carbon Dots with Predictable Optical Properties Synthesized at Room Temperature Guided by Machine Learning

Chemistry of Materials ◽

10.1021/acs.chemmater.1c03220 ◽

2022 ◽

Author(s):

Qin Hong ◽

Xiao-Yuan Wang ◽

Ya-Ting Gao ◽

Jian Lv ◽

Bin-Bin Chen ◽

...

Keyword(s):

Machine Learning ◽

Optical Properties ◽

Carbon Dots ◽

Room Temperature

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One-pot synthesis of double silane-functionalized carbon dots with tunable emission and excellent coating properties for WLEDs application

Nanotechnology ◽

10.1088/1361-6528/ac4067 ◽

2021 ◽

Author(s):

Wenbing Cao ◽

Yuhan Wu ◽

Xin Li ◽

Xuanfeng Jiang ◽

Yuhong Zhang ◽

...

Keyword(s):

Optical Properties ◽

Carbon Dots ◽

Great Influence ◽

Alkoxy Group ◽

Color Temperature ◽

Molar Ratio ◽

Coating Properties ◽

One Pot ◽

Light Emitting ◽

Light Emitting Devices

Abstract Silane-functionalized carbon dots (SiCDs) can be exploited as effective color converting materials for the solid-state light-emitting devices. However, most of SiCDs reported thus far have shown photoluminescence emissions in the blue and green spectral range, which limit them to construct an efficient white light-emitting diodes (WLEDs) due to the lack of long-wavelength emission. Herein, a series of double silane-functionalized carbon dots (DSiCDs) were prepared via a one-step solvothermal method. The results show that the organic functional group of the silane has great influence on the optical properties of DSiCDs and the number of alkoxy group in the silane has great influence on coating properties of DSiCDs. In addition, the DSiCDs prepared by (3-aminopropyl)triethoxysilane and N-[3-(Trimethoxysilyl)propyl]ethylenediamine with molar ratio of 7:3 show excellent optical properties with the maximum emission at 608 nm under 400 nm excitation. Furthermore, they can be completely dried within 1 h at room temperature to form fluorescent coating with high stability and strong adhesion to the substrate. Together with their excellent optical and coating properties, they can be directly coated on LED chips to prepare WLEDs, with a CIE coordinate of (0.33,0.31), color rendering index of 81.6, and color temperature of 5774 K.

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Carbon dots prepared in different solvents with controllable structures: optical properties, cellular imaging and photocatalysis

New Journal of Chemistry ◽

10.1039/c7nj03621c ◽

2018 ◽

Vol 42 (3) ◽

pp. 1690-1697 ◽

Cited By ~ 9

Author(s):

Liyong Chen ◽

Yingyue Zhang ◽

Binhua Duan ◽

Zhizhi Gu ◽

Yuting Guo ◽

...

Keyword(s):

Optical Properties ◽

Carbon Dots ◽

Resource Conservation ◽

Cellular Imaging ◽

Additional Treatment

The preparation of carbon dots (CDs) featuring almost the same structures in different solvents is beneficial for their direct applications in the desired media without additional treatment and for resource conservation.

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