CrystEngComm最新文献

What drives porosity in aluminosilicate zeolites?

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-03-20 DOI: 10.1039/d5ce00034c

Dries Vandenabeele, Anjul Rais, Christine Kirschhock, Eric Breynaert

{"title":"What drives porosity in aluminosilicate zeolites?","authors":"Dries Vandenabeele, Anjul Rais, Christine Kirschhock, Eric Breynaert","doi":"10.1039/d5ce00034c","DOIUrl":"https://doi.org/10.1039/d5ce00034c","url":null,"abstract":"Discovery of their commercial potential gave rise to a massive implementation of zeolites in industrial (petro-)chemical processes. Their robustness and molecular scale porosity in combination with acidic and/or ion exchange properties makes zeolites nearly indispensable for most of these applications. This highlight explores the origins of zeolite porosity. As microporosity is an inherent feature of the formed topology, we emphasize the link with phase selection. For zeolites, phase selection is driven by competition between water and framework elements to coordinate with extra-framework species. This competition is important in the final product, where such coordinations provide thermodynamic stability, as well as in the crystallization medium where supermolecular structrures can play a templating role. Synthesis experiments using hydrated silicate ionic liquids show that limited water availability prompts the formation of less porous (or even dense) phases, while moderate hydration supports the development of more open frameworks. Understanding these interactions is key to deepening the insight into zeolite genesis and can guide strategies for tailoring material properties for industrial applications.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" ","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11934025/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inclusion and intercalation compounds of arsenic(iii) oxide polymorphs†

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-03-05 DOI: 10.1039/D5CE00135H

Piotr A. Guńka

引用次数: 0

Synergistic advantages of In-MOF/Bi2MoO6 composites in photocatalytic CO2 reduction: enhanced light absorption, charge separation and reactivity†

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-03-05 DOI: 10.1039/D4CE01285B

Xiao Zhang, Xiong He, Meng-Yao Ye, Bei-Bei Yuan, Song-Fang Zhao and Kui Li

{"title":"Synergistic advantages of In-MOF/Bi2MoO6 composites in photocatalytic CO2 reduction: enhanced light absorption, charge separation and reactivity†","authors":"Xiao Zhang, Xiong He, Meng-Yao Ye, Bei-Bei Yuan, Song-Fang Zhao and Kui Li","doi":"10.1039/D4CE01285B","DOIUrl":"https://doi.org/10.1039/D4CE01285B","url":null,"abstract":"The development of highly efficient photocatalysts for the reduction of CO2 holds paramount importance in addressing the pressing global energy and environmental challenges. In this meticulously conducted study, we successfully fabricated a novel composite consisting of In-MOF and Bi2MoO6, and comprehensively investigated its photocatalytic performance in the context of CO2 reduction. The formation of a heterojunction between the In-MOF and Bi2MoO6 facilitated efficient charge separation and transfer processes. The internal electric field present at the interface of the heterojunction drove the photogenerated electrons and holes to migrate in opposite directions, effectively mitigating their recombination rate. Consequently, a greater abundance of reactive species was available to participate in the CO2 reduction reaction. The combined effects of enhanced light absorption and efficient charge separation culminated in a higher yield of CO and CH4 compared to the individual components. This study provides some references and insights into the design and manufacture of high-performance photocatalysts.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1694-1700"},"PeriodicalIF":2.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facts and reality of multi-component organic ionic-cocrystals of di-topic acid–base conjugates†

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-03-03 DOI: 10.1039/D4CE01200C

Abhay Pratap Singh and Jubaraj B. Baruah

引用次数: 0

Novel interfacial antisolvent crystallization strategy to synthesize spherical ammonium perchlorate assemblies and investigate their thermal decomposition properties

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-03-03 DOI: 10.1039/D4CE01176G

Yu Zhang, Weiyu Shi, Ming Yang, Shijie Zhao, Zhipeng Cheng and Yi Wang

{"title":"Novel interfacial antisolvent crystallization strategy to synthesize spherical ammonium perchlorate assemblies and investigate their thermal decomposition properties","authors":"Yu Zhang, Weiyu Shi, Ming Yang, Shijie Zhao, Zhipeng Cheng and Yi Wang","doi":"10.1039/D4CE01176G","DOIUrl":"https://doi.org/10.1039/D4CE01176G","url":null,"abstract":"Ammonium perchlorate (AP) is an extensively used solid propellant oxidizer. Controlled synthesis of spherical AP microstructures has always been a significant challenge. In this work, a novel interfacial antisolvent crystallization strategy was described to regulate the AP morphology, and spherical AP assemblies were successfully achieved. In this study, N-methylpyrrolidone (NMP) served as the solvent, and oleic acid (OA) as the antisolvent whose high-viscosity can restrict the diffusion rate to temporally stabilize the AP–NMP microdroplets. Small AP cubes recrystallized at the surface of metastable NMP microdroplets, and ultimately self-assembled into spherical hollow AP assemblies. Under the optimized conditions, the obtained spherical hollow AP assemblies had a narrow particle size distribution in the size range of 20–30 μm, and were constructed from a monolayer of cubic AP subunits whose diameter is 1–2 μm. The low-temperature decomposition (LTD) temperature of the spherical AP assemblies increased by 5 °C, whereas the high-temperature decomposition (HTD) temperature decreased by 22 °C. The temperature difference (ΔT) between the LTD and HTD significantly decreased to 128 °C compared with that of the raw AP at 155 °C. The decomposition of the spherical AP assemblies shows a faster decomposition rate and more concentrated exothermic process. The proposed interfacial antisolvent crystallization strategy is an efficient method to synthesize spherical AP assemblies.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 1950-1959"},"PeriodicalIF":2.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Angle-dependent and liquid-responsive photonic crystals for anti-counterfeiting and optical sensing

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-03-03 DOI: 10.1039/D4CE01281J

Congcong Chi, Danjie Zhang, Xin Xu, Jiahao Li, Jiangxue Ren, Xinggen Xu, Jiarong Xian, Honglei Chen and Hasan Jameel

{"title":"Angle-dependent and liquid-responsive photonic crystals for anti-counterfeiting and optical sensing","authors":"Congcong Chi, Danjie Zhang, Xin Xu, Jiahao Li, Jiangxue Ren, Xinggen Xu, Jiarong Xian, Honglei Chen and Hasan Jameel","doi":"10.1039/D4CE01281J","DOIUrl":"https://doi.org/10.1039/D4CE01281J","url":null,"abstract":"More and more attention has recently been attracted to structural color due to its eco-friendly nature and excellent color fastness. As a type of structural color material, the construction of photonic crystals (PCs) has become well-established. However, some problems still limit their applicability, such as low color saturation and complicated processing. Herein, a multi-step dropwise addition of precursors was adopted to achieve the controllable preparation of monodispersed nano-silica. The gravity deposition assembly method was then used to construct quick-drying SiO2 PCs with heterochromatic characteristics at different angles. Furthermore, the structural orderliness was improved through heat treatment after self-assembly. If the SiO2 suspension was left to stand for 72 hours to remove the supernatant, followed by gravity deposition self-assembly of the SiO2 sediment, it was observed that the SiO2 PCs assembled at the bottom of the dish exhibited bright, angle-dependent colors. The SiO2 PCs assembled on the dish wall were liquid-responsive, demonstrating good reversibility and recyclability. Therefore, a simple and rapid method for the preparation of angle-dependent and liquid-responsive SiO2 PCs was provided. This approach will broaden the applications of PCs in areas such as anti-counterfeiting, holographic displays, information encryption, liquid/optical sensing, smart packaging, and functional coatings.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 1910-1917"},"PeriodicalIF":2.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of aluminum doping in shaping the mechanical properties of p-type 4H-SiC†

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-02-27 DOI: 10.1039/D4CE01196A

Yanwei Yang, Zhouyu Tong, Xiaodong Pi, Deren Yang and Yuanchao Huang

{"title":"The role of aluminum doping in shaping the mechanical properties of p-type 4H-SiC†","authors":"Yanwei Yang, Zhouyu Tong, Xiaodong Pi, Deren Yang and Yuanchao Huang","doi":"10.1039/D4CE01196A","DOIUrl":"https://doi.org/10.1039/D4CE01196A","url":null,"abstract":"In p-type 4H-SiC crystals, the doping of aluminum (Al) will affect mechanical properties due to changes in the crystal structure and defect dynamics. This study employs nanoindentation, Raman spectroscopy, and transmission electron microscopy (TEM) to investigate the effects of Al doping on the mechanical properties of p-type 4H-SiC. It compares samples with varying Al concentrations (undoped, low Al-doped, and high Al-doped) to examine changes in elastic modulus, hardness, and fracture toughness. Nanoindentation results reveal that Al doping reduces the hardness and fracture toughness of 4H-SiC, with the impact becoming more pronounced as the doping level increases. Microstructural analysis shows that Al doping facilitates dislocation formation and crack propagation, contributing to the observed mechanical degradation. Additionally, first-principles calculations provide insight into the underlying mechanisms, confirming that Al doping reduces the elastic modulus, hardness, and fracture toughness due to changes in shear modulus and bond strength. This work enhances the understanding of doping effects in p-type 4H-SiC and provides valuable information for the design and optimization of high-performance SiC wafers for industrial applications.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 12","pages":" 1830-1836"},"PeriodicalIF":2.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ce/d4ce01196a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Guest-adaptive hydrogen-bonded dimerization of a C3-symmetric tribenzotriquinacene molecular bowl† C3 对称三苯并三喹并烯分子碗†的客体自适应氢键二聚反应

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-02-27 DOI: 10.1039/D5CE00038F

Tian-Shu Yang, Xiao-Fang Duan, Fan Yin, Li-Xuan Cai, Li-Peng Zhou, Shao-Jun Hu, Xiao-Qing Guo and Qing-Fu Sun

{"title":"Guest-adaptive hydrogen-bonded dimerization of a C3-symmetric tribenzotriquinacene molecular bowl†","authors":"Tian-Shu Yang, Xiao-Fang Duan, Fan Yin, Li-Xuan Cai, Li-Peng Zhou, Shao-Jun Hu, Xiao-Qing Guo and Qing-Fu Sun","doi":"10.1039/D5CE00038F","DOIUrl":"https://doi.org/10.1039/D5CE00038F","url":null,"abstract":"Hydrogen-bonded dimerization of a C3-symmetric tribenzotriquinacene-based molecular bowl (C3-1) orchestrates the formation of supramolecular assemblies characterized with exceptional guest-induced structural modulation. In the absence of guest molecules, C3-1 assembles into π⋯π stacking dimers devoid of a predefined cavity, yet it exhibits remarkable structural plasticity upon guest binding. The introduction of small aromatic and aliphatic guests—including cyclohexane, benzene, and o-/m-/p-xylene—triggers dynamic, self-adaptive structural transformations, culminating in the formation of host–guest complexes with distinct architectures. X-ray crystallography reveals pronounced structural variations among these assemblies, underscoring the pivotal role of hydrogen bonding and host–guest interactions in directing supramolecular organization. This study illuminates a versatile design paradigm for tribenzotriquinacene-based molecular cages with tunable properties, offering promising candidates for applications in molecular recognition, selective encapsulation, and crystal sponge technologies.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 2025-2032"},"PeriodicalIF":2.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical study of the effects of crucible movement on the Ge growth process in an inductive Czochralski furnace

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-02-27 DOI: 10.1039/D4CE01212G

Sanaz Hadidchi and Mohammad Hossein Tavakoli

{"title":"Numerical study of the effects of crucible movement on the Ge growth process in an inductive Czochralski furnace","authors":"Sanaz Hadidchi and Mohammad Hossein Tavakoli","doi":"10.1039/D4CE01212G","DOIUrl":"https://doi.org/10.1039/D4CE01212G","url":null,"abstract":"The Czochralski (CZ) method is widely used for growing high-purity germanium (Ge) crystals, essential for infrared optics, radiation detectors, and high-mobility transistors. However, thermal stress accumulation, dislocation formation, and unstable growth interfaces remain significant challenges in germanium crystal fabrication. This study presents a numerical investigation of the impact of crucible movement on temperature distribution, melt convection, stress accumulation, and defect formation in CZ germanium growth. Results show that a moving crucible improves temperature uniformity, reducing radial thermal gradients that contribute to stress-induced defects. Melt convection patterns are stabilized, preventing undercooling at the crucible bottom and ensuring more uniform heat distribution. The crystal–melt interface remains smoother, reducing the formation of slip bands and stacking faults—defects that degrade electrical and optical performance in germanium devices. Furthermore, von Mises stress analysis confirms that crucible movement significantly lowers stress accumulation, decreasing dislocation density in the grown crystal. These findings align with experimental studies on germanium CZ growth and provide practical process optimizations for improving semiconductor-grade germanium crystal quality. The results have direct applications in infrared imaging, space solar cells, and high-speed electronic devices, where defect-free germanium is essential.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":" 13","pages":" 1986-1996"},"PeriodicalIF":2.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prism[n]arene-alkyl dibromide (n = 5, 6) synergy: molecular affinity in the solid state†

IF 2.6 3区化学

CrystEngComm Pub Date : 2025-02-26 DOI: 10.1039/D4CE01320D

Mickey Vinodh, Nour O. Abdeljaber, Fatemeh H. Alipour and Talal F. Al-Azemi

引用次数: 0