Article
Materials Science, Multidisciplinary
Xiang Yao, Jian-Ming Lei, Yao-Xiong Huang
Summary: By studying the evaporated crystallization of solutions, including protein + salt solutions, the researchers revealed the behavior, onset, and process of dendritic crystal growth as influenced by temperature, pH value, and concentrations of major components. They proposed crystallization mechanisms and factors influencing dendritic crystal formation. The study showed that only solutions with crystalline and amorphous substances could form dendritic crystals at temperatures between 20-40°C. The research highlights the potential of dendrite formation and pattern analysis methods as alternatives to analytical instruments for solution tests or producing dendritic crystals with desired patterns.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Chemistry, Physical
Megan E. Greaves, Elliot L. B. Johnson Humphrey, David J. Nelson
Summary: The review focuses on the reactions of nickel(0) complexes with organohalides, categorized based on the type of ligand present on nickel. The preferred reaction mechanism is influenced by a delicate balance of ligand and substrate structure, with small changes potentially leading to significant behavioral differences. This will impact the advancement of catalytic reactions using organohalide substrates and may affect ligand selection and the scope and limitations of the reactions.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Erika Saiki, Misato Yoshida, Kei Kurahashi, Hiroki Iwase, Toshiyuki Shikata
Summary: The study on methyl cellulose (MC) ether samples dissolved in pure water under dilute conditions revealed that the particles formed in aqueous solution behave as elongated rigid rods, and their morphology is influenced by the weight average molar masses.
Article
Multidisciplinary Sciences
Martin Pacesa, Luuk Loeff, Irma Querques, Lena M. Muckenfuss, Marta Sawicka, Martin Jinek
Summary: Researchers have used cryo-electron microscopy to observe the structural changes that occur during the binding and activation of Cas9. These findings provide a valuable structural framework for understanding the conformational checkpoint mechanism of Cas9 and may guide the development of new Cas9 variants and guide RNA designs with enhanced specificity and activity.
Article
Materials Science, Multidisciplinary
Hariharan Sriram, Semanti Mukhopadhyay, Kamalnath Kadirvel, Rongpei Shi, Michael J. Mills, Yunzhi Wang
Summary: We investigated the mechanisms of heterogeneous nucleation of γ'' precipitates on pre-existing γ' precipitates in Inconel 718-based alloys using phase field simulations and statistical analysis. The size of γ' precipitates, interfacial energies between γ, γ' and γ'' phases, and the solute depletion zone around growing γ' precipitates were found to determine the choice between the formation of compact and sandwich-like coprecipitates.
Article
Chemistry, Inorganic & Nuclear
Adam N. Barrett, Callum R. Woof, Christopher A. Goult, Danila Gasperini, Mary F. Mahon, Ruth L. Webster
Summary: The hydrogen/halogen exchange of phosphines has been utilized to establish a method for the synthesis of cyclopolyphosphines. The use of catalytic quantities of iron(III) acetylacetonate significantly improves conversion and selectivity for specific ring sizes. Investigation into the reactivity of Fe(acac)(3) suggests that the iron species acts as a sink for the hydrochloric acid byproduct of the reaction.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Applied
Xiaoyu Guo, Ji Kang, Zhiyuan Xu, Qingbin Guo, Lifeng Zhang, Haifeng Ning, Steve W. Cui
Summary: This review specifically examines the formation mechanisms, structure-activity relationships, and analytical methods for triple-helix polysaccharides. The insights provided can be valuable for exploring the biological activities of polysaccharides and their applications in the food and pharmaceutical industries.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Environmental
Garyfalia A. Zoumpouli, Zhuoyue Zhang, Jannis Wenk, Carsten Prasse
Summary: The study found that ozonation of furans in water can lead to the formation of toxic α,β-unsaturated dicarbonyl compounds. These toxic compounds may have potential impacts on human and environmental health.
Article
Engineering, Chemical
Kangwei Xu, Chenliang He, Jiuzheng Yin, Chunlan Qin, Shanshan Ruan, Ying Shi, Yi Liu, Lidong Zhang
Summary: Soot, a common byproduct of fuel combustion, has harmful effects on machine operation, environment, and human health. This study investigates the effects of equivalence ratio and CO2 addition on soot formation characteristics. The results show that the structure, carbon content, and oxygen content of soot are closely related to its oxidation activity.
Article
Multidisciplinary Sciences
Yuze Huang, Tristan G. Fleming, Samuel J. Clark, Sebastian Marussi, Kamel Fezzaa, Jeyan Thiyagalingam, Chu Lun Alex Leung, Peter D. Lee
Summary: This study reveals the behavior and evolution mechanisms of keyhole and bubble in laser powder-bed fusion (LPBF) using synchrotron X-ray imaging. The findings provide guidance for the development of control systems to reduce porosity.
NATURE COMMUNICATIONS
(2022)
Editorial Material
Materials Science, Multidisciplinary
Hongxing Xiao, Chongsheng Long, Hongsheng Chen
Summary: The formation process of high burnup structure (HBS) in UO2 fuel involves the subdivision of original grains and the formation of fission gas bubbles. The study found two restructuring mechanisms during the formation of HBS in UO2 fuel matrix: polygonization and recrystallization. Comparison with earlier experiments suggests that deposition of fission fragments and recoil particles is the main mechanism responsible for the formation of small grains on the inner wall of large bubbles.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Chemistry, Organic
Christin Kirst, Jonathan Tietze, Marian Ebeling, Lukas Horndasch, Konstantin Karaghiosoff
Summary: Aryl- and heteroaryl-dichlorophosphines were selectively synthesized in a one-pot reaction, with the formation of organozinc intermediates playing a crucial role. The reaction conditions, solvent choice, and steric demand of substituents all influence the yield and selectivity of the products.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Mateo Forjan, Silvije Vdovic, Marina Sekutor, Dani Skalamera, Piotr Kabacinski, Giulio Cerullo
Summary: This study investigates the photochemical reaction pathways of two compounds in the generation of quinone methides. The results indicate different reaction mechanisms on the femtosecond and nanosecond timescales for the two compounds.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Wei Fan, Dazhao Gou, Xiaohan Liu, Meng Li, Xizhong An, Kejun Dong, Ruiping Zou, Hao Zhang, Haitao Fu, Xiaohong Yang, Qingchuan Zou
Summary: The numerical reproduction of the formation of dense amorphous structure in granular materials under air impact through a coupled computational fluid dynamics-discrete element method model enables comprehensive investigation of the corresponding dynamics and mechanisms, including local structural evolution, interparticle interaction forces, and pore filling behavior. The analysis of the jamming phenomenon induced by the structural characteristics contributes to the theoretical and practical significance in the preparation of amorphous materials.
Article
Chemistry, Inorganic & Nuclear
Erik T. Ouellette, Julian S. Magdalenski, Robert G. Bergman, John Arnold
Summary: We report the synthesis and characterization of a novel rhenium-group 9 heterobimetallic diazenido species and its related diazenido and hydride complexes. Furthermore, we demonstrate the possibility of N-C bond formation in heterobimetallic complexes and investigate their properties using spectroscopy and computational studies.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Shujun Li, Yanfang Zhou, Nana Ma, Jie Zhang, Zhiping Zheng, Carsten Streb, Xuenian Chen
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Multidisciplinary Sciences
Chengwei Wang, Weiwei Ping, Qiang Bai, Huachen Cui, Ryan Hensleigh, Ruiliu Wang, Alexandra H. Brozena, Zhenpeng Xu, Jiaqi Dai, Yong Pei, Chaolun Zheng, Glenn Pastel, Jinlong Gao, Xizheng Wang, Howard Wang, Ji-Cheng Zhao, Bao Yang, Xiaoyu (Rayne) Zheng, Jian Luo, Yifei Mo, Bruce Dunn, Liangbing Hu
Article
Chemistry, Physical
Christopher M. Jr Jr Eastman, Qiaofu Zhang, Ji-Cheng Zhao
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION
(2020)
Article
Materials Science, Multidisciplinary
Ji-Cheng Zhao
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Chengwei Wang, Wei Zhong, Weiwei Ping, Zhiwei Lin, Ruiliu Wang, Jiaqi Dai, Miao Guo, Wei Xiong, Ji-Cheng Zhao, Liangbing Hu
Summary: Powder to bulk processing techniques like additive manufacturing and metal injection molding have revolutionized complex metal design and manufacturing. However, they often face challenges like residue stress and slow sintering processes. The ultrafast high-temperature sintering process offers a quick solution for synthesizing and sintering bulk metals and alloys, allowing for rapid screening and development of new metal compositions and structures.
Article
Materials Science, Multidisciplinary
Wei Zhong, Qiaofu Zhang, Ji-Cheng Zhao
Summary: The study tested 18 diverse binary systems and identified a surprisingly simple model with only one fitting parameter, which can reliably describe the diffusion behavior of binary solid solutions.
Article
Chemistry, Multidisciplinary
Shujun Li, Yue Zhao, Sebastian Knoll, Rongji Liu, Gang Li, Qingpo Peng, Pengtao Qiu, Danfeng He, Carsten Streb, Xuenian Chen
Summary: The study presents a new type of organic-inorganic hybrid polymer with high proton conductivity and controlled functionality, achieving a breakthrough in materials design.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Fei Fang, Jia-Xin Kang, Cong-Qiao Xu, Jiarui Chang, Jie Zhang, Shujun Li, Xuenian Chen
Summary: The influence of the pincer platform composition and substitution on the reactivity and physical properties of pincer complexes is easily explored experimentally, with subtle effects on the molecular structures and thermodynamic stability. The bond lengths and strengths of M-C-ipso, M-P, and M-X were discussed, along with thermochemical balances for different types of pincer complexes.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Wendao Li, Longfei Li, Stoichko Antonov, Changdong Wei, Ji-Cheng Zhao, Qiang Feng
Summary: The study showed that substituting W with other elements impacts the microstructural stability of the alloy, with W playing a crucial role in maintaining the stability of the γ' phase at high temperatures. Besides Ti, doping with other γ' forming elements promotes the precipitation of detrimental phases. The negative effects can be counterbalanced by moderate additions of Ta and Nb.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Wei Zhong, Ji-Cheng Zhao
Summary: This study extends a 1-parameter Z-Z-Z binary diffusion coefficient model to ternary and multicomponent systems, and finds that impressive predictions of ternary diffusion coefficients can be achieved by a simple combination of binary model parameters or using independent cross-binary fitting parameters, thereby improving the robustness of the data.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Chuangye Wang, Wei Zhong, Jess Garnett, Ji-Cheng Zhao
Summary: Liquid-solid diffusion couples (LSDCs) were used to generate a composition gradient in the hcp Mg phase, and nanoindentation scanning was performed to evaluate the composition-dependent hardness of eight alloying elements. The hardening coefficients were correlated with various materials properties, and were found to be closely related to the strengthening potency.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shujun Li, Yubin Ma, Yue Zhao, Rongji Liu, Yupeng Zhao, Xusheng Dai, Nana Ma, Carsten Streb, Xuenian Chen
Summary: The study demonstrates the activation of molecular hydrogen by polyoxometalate (POM)-based heterogeneous compounds functionalized with Platinum particles. The synergism between a hydrogen spillover mechanism and electron-proton transfer by the POM enables the selective catalytic reduction of olefins and nitroarenes with high functional group tolerance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiaofang Su, Shujun Li, Likai Yan
Summary: This study investigates the mechanism of N-H bond activation of hydrazine by a Polyoxometalates catalyst and reveals the key role of a heteroatom in the catalyst.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Wanru Xiao, Shujun Li, Yue Zhao, Yubin Ma, Na Li, Jie Zhang, Xuenian Chen
Summary: Four new transition metal-containing POM compounds were synthesized via a solvothermal method and showed efficient heterogeneous catalytic properties, with Cu-POM exhibiting the best performance. Cu-POM can be reused for at least five cycles without significant loss of catalytic activity, retaining its integrity as confirmed by IR spectroscopy and XRD analysis.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Shujun Li, Yue Zhao, Sebastian Knoll, Rongji Liu, Gang Li, Qingpo Peng, Pengtao Qiu, Danfeng He, Carsten Streb, Xuenian Chen
Summary: Controlled bottom-up design of polymers with metal oxide backbones is a challenging task in materials design. The reported 1D-organo-functionalized polyoxometalate polymer exhibits high proton conductivity and could lead to a new class of organic-inorganic polymers with tunable functions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)