Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Washing, Drying, and Ignition of Precipitates00:52

Washing, Drying, and Ignition of Precipitates

After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
Sublimation01:03

Sublimation

Sublimation is the direct transformation of a solid to a gaseous state. For instance, at standard pressure and room temperature, solid carbon dioxide sublimes to gaseous carbon dioxide. The phase diagram depicts the conditions required for sublimation. This process occurs at the solid-gas phase boundary and is not observed above the triple point of the substance. The reverse of sublimation is called deposition, where a gaseous substance condenses directly into a solid. Sublimation and...
Sample Preparation for Analysis: Advanced Techniques01:08

Sample Preparation for Analysis: Advanced Techniques

Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Machine Learning-Guided Tailored Synthesis of Single Room-Temperature Phosphorescent Carbon Dots.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Enhanced Anti-Counterfeiting Using Dynamic Encryption with Dual Physically Unclonable Functions.

ACS applied materials & interfaces·2026
Same author

A ppb-Level Chloroform Photoacoustic Gas Sensor Based on Omnidirectional Acoustic Sensing with a 3D Microphone Phased Array.

Analytical chemistry·2026
Same author

Photoacoustic Multigas Sensor via CNN-Based Mode Division Multiplexing.

Analytical chemistry·2026
Same author

Highly Efficient Broad-Spectrum Antibacterial Carbon Dots through Hierarchical Machine Learning Framework.

Nano letters·2026
Same author

High-performance red light-emitting diodes from quasi-two-dimensional perovskite nanocrystals.

Nature communications·2026

Related Experiment Video

Updated: May 8, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.2K

Low-temperature molten-salt enabled synthesis of highly-efficient solid-state emitting carbon dots optimized using

Yu Lan1, Guang-Song Zheng2, Run-Wei Song2

  • 1School of Physical Science and Technology, Guangxi University, Nanning, China.

Nature Communications
|September 1, 2025
PubMed
Summary

We developed a facile molten salt method for one-step synthesis of full-color carbon dots (CDs) with efficient solid-state emission. This approach enables kilogram-scale production under mild conditions, significantly advancing lighting and display technologies.

More Related Videos

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

9.7K
Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
08:43

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Published on: October 27, 2018

18.2K

Related Experiment Videos

Last Updated: May 8, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.2K
Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

9.7K
Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
08:43

Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

Published on: October 27, 2018

18.2K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • Fluorescent carbon dots (CDs) offer unique optoelectronic properties but face challenges in synthesis temperature, post-processing, and solid-state luminescence efficiency.
  • Current methods often require high temperatures and complex procedures, limiting practical applications of CDs.

Purpose of the Study:

  • To develop a facile and efficient method for synthesizing full-color carbon dots with enhanced solid-state luminescence.
  • To investigate the role of zinc ion coordination in facilitating low-temperature synthesis and improving luminescence properties.
  • To optimize carbon dot performance for applications in lighting and display technologies.

Main Methods:

  • A molten salt method was employed for the one-step synthesis of carbon dots under mild conditions (100-142°C) within 10 minutes.
  • Spectral characterization and density functional theory (DFT) calculations were used to understand the mechanism of zinc ion coordination and its effect on luminescence.
  • Machine learning was utilized to optimize the luminous efficiency of the synthesized carbon dots.

Main Results:

  • Kilogram-scale production of solid-state CDs with a quantum yield of 90% was achieved via a salt-assisted approach.
  • Zinc ion coordination was confirmed to facilitate precursor polymerization at lower temperatures and suppress non-radiative recombination, enhancing solid-state luminescence.
  • Optimized CDs achieved a luminous efficiency of 99.86% and were fabricated into high-performance light-emitting diodes (LEDs) with a maximum luminous efficiency of 272.65 lm/W.
  • The resulting LEDs demonstrated excellent performance for backlit displays with a long-persistent lifetime.

Conclusions:

  • The developed molten salt method provides an efficient pathway for the low-temperature, one-step synthesis of high-performance, full-color carbon dots.
  • Zinc ion coordination plays a crucial role in enhancing the luminescence efficiency and enabling practical applications of carbon dots in solid-state devices.
  • This work significantly contributes to the advancement of carbon-based luminescent materials for next-generation lighting and display technologies.