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Network Covalent Solids

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...

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Author Spotlight: Advancing SERS Technology: Au@Carbon Dot Nanoprobes for Label-Free Analysis and Imaging

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Carbon Dots: Synthesis, Properties and Applications.

Lin Cui^1,2,3, Xin Ren⁴, Mengtao Sun²

¹Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Yingkou Institute of Technology, Yingkou 115014, China.

Nanomaterials (Basel, Switzerland)

|December 24, 2021

Summary

Carbon dots (CDs) are versatile nanomaterials with unique optical properties. This review covers their synthesis, properties, and applications in biomedicine and photocatalysis, highlighting future potential.

Keywords:

biomedicine carbon dots nanomaterial photocatalysis

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Area of Science:

Nanomaterials Science
Materials Chemistry
Biomedical Engineering

Background:

Carbon dots (CDs) are emerging carbon-based nanomaterials.
They exhibit unique electronic and optical properties, including tunable fluorescence and up-converted photoluminescence.
CDs possess low toxicity and excellent biocompatibility.

Purpose of the Study:

To review recent advancements in the synthesis and optical properties of carbon dots.
To explore the biomedical and photocatalytic applications of CDs.
To discuss the future potential of CDs in various fields.

Main Methods:

Literature review of synthesis routes for carbon dots.
Analysis of optical properties and photoluminescence behavior.
Examination of applications in biological sensing, drug delivery, photodynamic therapy, and photocatalysis.

Main Results:

CDs demonstrate tunable fluorescence, efficient up-converted photoluminescence, and photo-induced electron transfer abilities.
Low toxicity and biocompatibility make CDs suitable for biomedical applications.
Promising results in photocatalysis and sensing applications have been reported.

Conclusions:

Carbon dots are highly promising nanomaterials with diverse applications.
Further research into synthesis optimization and application development is warranted.
CDs are poised for significant growth in biosensing, drug delivery, and photocatalysis.