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

Hybridization of Atomic Orbitals I03:24

Hybridization of Atomic Orbitals I

47.4K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
47.4K
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

32.6K
sp3d and sp3d 2 Hybridization
32.6K
α-Bromination of Carboxylic Acids: Hell–Volhard–Zelinski Reaction01:15

α-Bromination of Carboxylic Acids: Hell–Volhard–Zelinski Reaction

3.1K
The method to achieve α-brominated carboxylic acids using a mixture of phosphorus tribromide and bromine is known as the Hell–Volhard–Zelinski reaction. The reaction is catalyzed by phosphorus tribromide, which can be used directly or produced in situ from red phosphorus and bromine. The mechanism comprises PBr3 catalyzed conversion of acid to acid bromide and hydrogen bromide. The acid bromide enolizes to its enol form in the presence of HBr. The nucleophilic enol attacks the...
3.1K
Carboxylic Acids to Acid Chlorides01:18

Carboxylic Acids to Acid Chlorides

7.1K
Carboxylic acids react with SOCl2 or PCl5 to form acid chlorides. Amongst the carboxylic acid derivatives, acid chlorides are the most reactive and synthetically important derivatives. They are useful reagents for Friedel–Crafts acylation of some aromatic compounds.
7.1K
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene01:15

Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene

8.3K
Chlorination and bromination are important classes of electrophilic aromatic substitutions, where benzene reacts with chlorine or bromine in the presence of a Lewis acid catalyst to give halogenated substitution products. A Lewis acid such as aluminium chloride or ferric chloride catalyzes the chlorination, and ferric bromide catalyzes the bromination reactions. During the bromination of alkenes, bromine polarizes and becomes electrophilic. However, in the bromination of benzene, the bromine...
8.3K
Halogenation of Alkenes02:46

Halogenation of Alkenes

15.8K
Halogenation is the addition of chlorine or bromine across the double bond in an alkene to yield a vicinal dihalide. The reaction occurs in the presence of inert and non-nucleophilic solvents, such as methylene chloride, chloroform, or carbon tetrachloride.
Consider the bromination of cyclopentene. Molecular bromine is polarized in the proximity of the π electrons of cyclopentene. An electrophilic bromine atom adds across the double bond, forming a cyclic bromonium ion intermediate.
15.8K

You might also read

Related Articles

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

Sort by
Same author

Optimization of Stillinger Weber Potential Parameters for Monolayer ZnS.

Journal of computational chemistry·2025
Same author

Surface-enhanced Raman scattering of R6G dimerization during self-healing of gel.

Mikrochimica acta·2025
Same author

One-Step Preparation of High-Stability CsPbX<sub>3</sub>/CsPb<sub>2</sub>X<sub>5</sub> Composite Microplates with Tunable Emission.

ACS applied materials & interfaces·2024
Same author

Ultrastable CsPbBr<sub>3</sub>@CsPb<sub>2</sub>Br<sub>5</sub>@TiO<sub>2</sub> Composites for Photocatalytic and White Light-Emitting Diodes.

ACS applied materials & interfaces·2023
Same author

In Situ Fabrication of Lead-Free Double Perovskite/Polymer Composite Films for Optoelectronic Devices and Anticounterfeit Printing.

ACS applied materials & interfaces·2023
Same author

Preparation of ultra-stable and environmentally friendly CsPbBr<sub>3</sub>@ZrO<sub>2</sub>/PS composite films for white light-emitting diodes.

Nanoscale·2022

Related Experiment Video

Updated: Jul 27, 2025

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI

Published on: November 22, 2016

7.8K

Preparation of CsPb(Cl/Br)

Chen Zhang1, Minqiang Wang1, Jindou Shi1

  • 1Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, Xi'an, China.

Frontiers in Chemistry
|June 5, 2023
PubMed
Summary

Cesium lead halide perovskite nanocrystals were integrated into Eu3+-doped TiO2 hollow shells, creating stable white light-emitting diodes. This composite material offers bright emission and improved operational stability for perovskite devices.

Keywords:
CsPb(Cl/Br)3/TiO2:Eu3+anatasenano-materialsperovskitewhite light emitting diodes

More Related Videos

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

10.7K
Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
07:42

Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications

Published on: January 22, 2019

11.2K

Related Experiment Videos

Last Updated: Jul 27, 2025

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
08:46

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI

Published on: November 22, 2016

7.8K
Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV
10:42

Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of ChalcogenidoplumbatesII or IV

Published on: December 29, 2016

10.7K
Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
07:42

Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications

Published on: January 22, 2019

11.2K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid-State Chemistry

Background:

  • Cesium lead halide perovskite (CsPbX3) nanocrystals (NCs) exhibit a single emission peak and undergo rapid anion exchange, limiting their use in white light-emitting diodes (WLEDs).
  • Composite structures can enhance perovskite stability and passivate surface defects, but complex post-treatments often cause NC dissolution.

Purpose of the Study:

  • To develop a stable CsPb(Cl/Br)3/TiO2:Eu3+ composite for direct white light excitation without additional treatment.
  • To improve the stability and performance of perovskite-based WLEDs.

Main Methods:

  • In-situ growth of CsPb(Cl/Br)3 NCs within Eu3+-doped TiO2 hollow shells using a modified thermal injection method.
  • Utilizing TiO2 shells as a substrate for Eu3+ doping and as a protective layer against PL quenching molecules.

Main Results:

  • The CsPb(Cl/Br)3/TiO2:Eu3+ composite exhibited direct white light emission.
  • WLEDs fabricated with these composites showed bright white light, a luminous efficiency of 87.39 lm/W, and enhanced long-time operating stability.
  • The TiO2 hollow shells effectively protected the CsPb(Cl/Br)3 NCs, preventing degradation and maintaining crystal structure.

Conclusions:

  • The in-situ growth of CsPb(Cl/Br)3 NCs in Eu3+-doped TiO2 hollow shells provides a promising strategy for developing stable and efficient perovskite-based WLEDs.
  • This approach overcomes limitations of single-component perovskite NCs and complex post-treatment methods.
  • The composite material offers a new avenue for advancing perovskite optoelectronic devices.