Related Experiment Video
Updated: Nov 22, 2025
05:51
Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes
Published on: November 15, 2016
8.3K
Lead chlorine cluster assembled one-dimensional halide with highly efficient broadband white-light emission
Jian-Qiang Zhao1, Chen Sun2, Meng Yue1
1Department of Chemistry and Chemical Engineering, Jining University, Qufu, Shandong 273155, P. R. China. yuechengyang@126.com xwlei_jnu@163.com.
Chemical Communications (Cambridge, England)
|January 8, 2021
Summary
A novel hybrid lead halide, [DTHPE]2Pb3Cl10, exhibits intrinsic broadband white light emission. This new material demonstrates high quantum efficiency, surpassing traditional 2D perovskites.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Solid-State Chemistry
Background:
- Hybrid lead halides are promising materials for optoelectronic applications.
- Existing two-dimensional (2D) perovskites often face challenges in achieving efficient broadband white light emission.
- Understanding structure-property relationships in novel lead halide architectures is crucial for developing advanced materials.
Purpose of the Study:
- To synthesize and characterize a new hybrid lead halide compound, [DTHPE]2Pb3Cl10.
- To investigate the photoluminescent properties of the synthesized material, focusing on its white light emission capabilities.
- To compare the performance of this new material with existing perovskite structures.
Main Methods:
- Synthesis of the [DTHPE]2Pb3Cl10 hybrid lead halide.
- Structural characterization using appropriate analytical techniques (e.g., X-ray diffraction).
- Photoluminescence spectroscopy to determine emission properties, including quantum efficiency and spectral bandwidth.
Main Results:
- Successful synthesis and characterization of [DTHPE]2Pb3Cl10.
- Identification of a unique one-dimensional (1D) wavelike [Pb3Cl10]4- chain structure based on a corner-shared [Pb3Cl11] cluster.
- Observation of intrinsic broadband white light emission with a high quantum efficiency of 19.45%.
Conclusions:
- The novel [DTHPE]2Pb3Cl10 compound represents a new class of hybrid lead halides.
- The cluster-based 1D chain structure is responsible for the observed efficient white light emission.
- This material shows superior performance in white light emission compared to previously reported 2D perovskites.
Related Concept Videos
02:46Halogenation of Alkenes
17.6K
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.
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.
17.6K
01:22Mass Spectrometry: Alkyl Halide Fragmentation
1.3K
Chlorine isotopes exist as 35Cl and 37Cl in a 3:1 ratio, while bromine isotopes exist as 79Br and 81Br in a 1:1 ratio. The mass spectrum of alkyl halides typically produces two distinct molecular ion peaks, the molecular ion peak, [M], and the molecular ion plus two, [M + 2] peak. The relative heights of these two peaks are proportional to the isotopic abundance ratios of the halide. For example, 2‐chloropropane and 1‐bromopropane display two peaks with relative peak heights in a 3:1 and...
1.3K
02:45Alkyl Halides
18.9K
Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
18.9K
01:31Radical Substitution: Allylic Chlorination
2.8K
Typically, when alkenes react with halogens at low temperatures, an addition reaction occurs. However, upon increasing the temperature or under reaction conditions that form radicals, providing a low but steady concentration of halogen radicals, allylic substitution reaction is favored. This is because allylic hydrogens are very reactive as the formed intermediate is resonance stabilized. For example, when propene is treated with chlorine in the gas phase at 400 °C, it undergoes allylic...
2.8K
03:01Halogens
22.3K
Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group.
22.3K
01:33Radical Halogenation: Stereochemistry
4.3K
Stereochemistry is the study of the different spatial arrangements of atoms in a given molecule. The stereochemistry of radical halogenations can be understood from three different situations:
Halogenation to form a new chiral center:
Halogenation to form a new chiral center:
4.3K