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Crystals
Special Issues
Synthesis, Structure and Application of Metal Halides
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Synthesis, Structure and Application of Metal Halides

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Inorganic Crystalline Materials".

Deadline for manuscript submissions: 31 August 2025 | Viewed by 969

Special Issue Editor

Dr. Bo Zhang

E-Mail Website1 Website2
Guest Editor
College of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory and Collaborative Innovation Center of Chemical Energy Storage & Novel Cell Technology, Liaocheng University, Liaocheng 252059, China
Interests: metal halide; structural assembly; optoelectronics; photocatalysis

Special Issue Information

Dear Colleagues,

Over the past decade, metal halides have attracted increasing attention for their structural tunability and photophysical properties. In terms of composition, the metal centers of this family include but are not limited to Pb, Sn, Bi, Sb, Cu, and Ag, which normally possess flexible and various coordination modes to halogen. Although some progress has been made in this field, the use of multiple template agents for the structural assembly of such compounds is still particularly attractive but challenging. Especially in recent years, researchers have begun to apply this compound in the fields of fluorescence, photochromism, thermochromism, optoelectronics, and photocatalysis. Through the structural assembly and performance research of numerous new substances, people will undoubtedly increase their understanding of the structural design and performance applications of functional metal halides.

Researchers are invited to contribute to this Special Issue, “Synthesis, Structure and Application of Metal Halides”. Prospective authors are encouraged to submit original and unpublished papers in this subject area.

Dr. Bo Zhang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • X-ray diffraction analysis
  • structural assembly
  • structure–activity relationship
  • semiconductor property
  • theoretical research
  • catalysis

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Published Papers (2 papers)

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Research

15 pages, 6028 KiB  
Article
Crystalline Li-Ta-Oxychlorides with Lithium Superionic Conduction
by Hao-Tian Bao, Bo-Qun Cao and Gang-Qin Shao
Crystals 2025, 15(5), 475; https://doi.org/10.3390/cryst15050475 - 17 May 2025
Viewed by 364
Abstract
Nowadays, some amorphous and microcrystalline solid-state electrolytes (SSEs) with dual anions have attained high ionic conductivity and good compatibility with electrodes in all-solid-state lithium-ion batteries (ASSLIBs). In this work, crystalline SSEs of series A (Li1+xTaO1+xCl4−x [...] Read more.
Nowadays, some amorphous and microcrystalline solid-state electrolytes (SSEs) with dual anions have attained high ionic conductivity and good compatibility with electrodes in all-solid-state lithium-ion batteries (ASSLIBs). In this work, crystalline SSEs of series A (Li1+xTaO1+xCl4−x, −0.70 ≤ x ≤ 0.50) and B (LiTaO2+yCl2−2y, −1.22 ≤ y ≤ 0), having great application potential well over ambient temperatures, were prepared at 260–460 °C for 2–10 h using Li2O, TaCl5, and LiTaO3 as the raw materials. The three-phase coexisting samples attained high σ values ranging from 5.20 to 7.35 mS cm−1, which are among the reported high values of amorphous co-essential SSEs and other alloplasmatic crystalline ones. It is attributed to the synergistic effect of the polyanion trans-[O2Cl4] and cis-[O4Cl2] octahedra framework. Full article
(This article belongs to the Special Issue Synthesis, Structure and Application of Metal Halides)
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14 pages, 3070 KiB  
Article
Zero-Dimensional Organic Amine-Copper Bromide Hybrid Crystal with Highly Efficient Yellow Emission
by Yanxi Chen, Ye Tian, Tao Huang, Shangfei Yao, Hui Peng and Bingsuo Zou
Crystals 2025, 15(4), 312; https://doi.org/10.3390/cryst15040312 - 27 Mar 2025
Viewed by 396
Abstract
Recently, Cu(I)-based metal halides have attracted tremendous attention owing to their remarkable photophysical properties. However, most of them can only be excited by near ultraviolet (UV) light at a wavelength (generally less than 350 nm) with a wide bandgap, which undoubtedly limits their [...] Read more.
Recently, Cu(I)-based metal halides have attracted tremendous attention owing to their remarkable photophysical properties. However, most of them can only be excited by near ultraviolet (UV) light at a wavelength (generally less than 350 nm) with a wide bandgap, which undoubtedly limits their application in solid-state lighting due to the low excitation efficiency at about 400 nm in devices. Here, we report a new zero-dimensional organic cuprous bromide of (C13H30N)2Cu5Br7 single crystals, which can be excited by visible light (390–400 nm) and give a bright yellow and broad self-trapped exciton emission band with the photoluminescence quantum yield (PLQY) of 92.3% at room temperature. The experimental and theoretical results show that the existence of Cu-Br-Cu metal bonds in a Cu5Br7 cluster package produces three components of self-trapped excitons (STE) that emit at room temperature but merge into one at 80 K. This occurs because of the anomalously enhanced electron–phonon coupling and electron–electron coupling in the coupled clusters in this system. These effects cause the excitation near visible light and emission broader at higher temperature. Additionally, their remarkable anti-water emission stability was demonstrated even after soaking in water for 6 h. Finally, a highly efficient white-light-emitting diode (WLED) based on (C13H30N)2Cu5Br7 was fabricated. Full article
(This article belongs to the Special Issue Synthesis, Structure and Application of Metal Halides)
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