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

Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Transition Zone01:28

Transition Zone

The transition zone in concrete is a critical area where aggregate meets cement paste, marked by a distinct porosity and weakness compared to the surrounding material. The adhesion around the aggregates is primarily due to Van Der Waals forces. The voids within this zone influence its robustness; initially, it is less durable than the surrounding bulk mortar due to larger voids. Initially, when concrete is compacted, a higher water-cement ratio near the aggregates leads to the formation of...
Plasticizers01:31

Plasticizers

Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
Superplasticizers01:30

Superplasticizers

Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...

You might also read

Related Articles

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

Sort by
Same author

Computer-aided kinetic network modeling of orthoester metathesis.

Physical chemistry chemical physics : PCCP·2026
Same author

[Focus on evaluating the pneumococcal vaccine response].

Annales de biologie clinique·2026
Same author

Aqueous Continuous Flow Synthesis of Cadmium Chalcogenide Quantum Dots: Opportunities and Challenges.

JACS Au·2026
Same author

Catalytic Generation of Nitrosocarbonyls Under Mild Conditions: Advances, Challenges, and Opportunities.

ChemSusChem·2025
Same author

<i>Nemo censetur ignorare legem</i>: what research chemists should know about the EU legal framework.

Chemical Society reviews·2025
Same author

Effects of Elexacaftor-Tezacaftor-Ivacaftor on Nasal and Sinus Symptoms in Children With Cystic Fibrosis.

Pediatric pulmonology·2025

Related Experiment Video

Updated: Jul 27, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.1K

An innovative chalcogenide transfer agent for improved aqueous quantum dot synthesis.

Guillaume Petit1, Cedric Malherbe2, Pauline Bianchi1

  • 1Center for Integrated Technology and Organic Synthesis (CiTOS), MolSys Research Unit, University of Liège B-4000 Liège (Sart Tilman) Belgium jc.monbaliu@uliege.be https://www.citos.uliege.be/.

Chemical Science
|August 12, 2024
PubMed
Summary

A novel aqueous synthesis method uses tris(2-carboxyethyl)phosphine (TCEP) to create cadmium chalcogenide (CdX) quantum dots (QDs) in continuous flow. This scalable process enables efficient production of QDs for potential biological and industrial applications.

More Related Videos

Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films
08:38

Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films

Published on: August 19, 2016

8.5K
Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures
09:12

Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures

Published on: August 10, 2017

7.6K

Related Experiment Videos

Last Updated: Jul 27, 2026

Compact Quantum Dots for Single-molecule Imaging
17:14

Compact Quantum Dots for Single-molecule Imaging

Published on: October 9, 2012

18.1K
Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films
08:38

Electrospray Deposition of Uniform Thickness Ge23Sb7S70 and As40S60 Chalcogenide Glass Films

Published on: August 19, 2016

8.5K
Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures
09:12

Facet-to-facet Linking of Shape-anisotropic Colloidal Cadmium Chalcogenide Nanostructures

Published on: August 10, 2017

7.6K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Quantum dots (QDs) synthesis often involves hazardous organic solvents and complex procedures.
  • Developing scalable, environmentally friendly methods for QD production is crucial for broader applications.

Purpose of the Study:

  • To introduce an innovative, water-based continuous flow synthesis for cadmium chalcogenide (CdX) quantum dots (QDs).
  • To explore the use of tris(2-carboxyethyl)phosphine (TCEP) as a novel precursor for aqueous QD synthesis.
  • To demonstrate the scalability and efficiency of the developed continuous flow process.

Main Methods:

  • Utilized a Design of Experiments (DoE) approach to optimize critical process parameters (pH, chalcogen excess, residence time).
  • Employed in situ Raman and 31P NMR spectroscopy for real-time reaction kinetics investigation.
  • Adapted TCEP-chalcogenide conversion and CdX QD synthesis to continuous flow conditions using a mesofluidic reactor.

Main Results:

  • Identified TCEP as an efficient, water-soluble precursor for aqueous CdX QD synthesis.
  • Successfully synthesized CdS, CdSe, and CdTe QDs in water under continuous flow conditions.
  • Demonstrated scalability up to 80 mL min-1 flow rates and produced biocompatible CdSe/ZnS core-shell QDs in a fully concatenated flow process.

Conclusions:

  • The novel aqueous continuous flow protocol offers a scalable and intensified method for QD synthesis.
  • TCEP serves as a versatile precursor for producing various CdX QDs in water.
  • The developed process holds significant potential for diverse biological and industrial applications of QDs.