Article
Nanoscience & Nanotechnology
Qiwen Yan, Lina Mao, Bang Feng, Lidong Zhang, Yiqian Wu, Wei Huang
Summary: A series of novel humidity-responsive and photosensitive polymer films have been prepared, which can control humidity-induced deformation through patterned cross-linking and change deformation direction programmatically through reversible photodimerization. Additionally, the length and width ratio between un-crosslinked and cross-linked segments affects the deformation of the films.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Galiya Magazova, Yoonrae Cho, Jessica A. Muhlenkamp, Jason C. Hicks
Summary: In this study, a catalyst consisting of isolated Ni2+ sites on a lacunary defect of a Wells-Dawson polyoxometalate supported on SBA-15 was used for gas phase propylene oligomerization. The catalyst exhibited high selectivity for linear propylene dimers and depended on reaction temperature.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Sara Fernanda Orsini, Laura Cipolla, Simona Petroni, Sandra Dire, Riccardo Ceccato, Emanuela Callone, Roberta Bongiovanni, Sara Dalle Vacche, Barbara Di Credico, Silvia Mostoni, Roberto Nistico, Luisa Raimondo, Roberto Scotti, Massimiliano D'Arienzo
Summary: The study successfully synthesized a new alkoxysilane-bearing light-responsive cinnamyl group and applied it for surface functionalization of SiO2 nanoparticles, demonstrating high efficiency and versatility in functionalization. The results indicate that the method is promising for designing materials with photoresponsive properties.
Article
Multidisciplinary Sciences
Raphael Lampl, Joscha Breibeck, Nadiia Gumerova, Mathea Sophia Galanski, Annette Rompel
Summary: The investigation of four Wells-Dawson phosphotungstates revealed that the monolacunary [alpha(2)-(P2W17O61)-W-V-O-VI]10- has the strongest inhibitory effect on AbPPO4, while the trilacunary and hexalacunary species showed weaker inhibition. The rearrangement of hexalacunary species led to the formation of multiple POTs with comparable inhibitory activity. The good inhibitory effect of the monolacunary species is attributed to the low charge density of its protonated forms at pH 6.8.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Hui-Juan Wang, Heng-Yi Zhang, Wen-Wen Xing, Huang Wu, Yong-Liang Cui, Yu Liu
Summary: This study presents a rational construction of fine-tuning and precisely controllable topological nanostructures based on a supramolecular self-assembly system. The use of coumarin-12-crown-4 as a building block allows for reversible high stereo-selective photodimerization and photocleavage, leading to the formation of helical nanobelts and nanoballs. The transformation of superstructures based on photo-controlled multiple blocks provides insights into the relationship between molecules and superstructures.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Pallabi Sinha Roy, Matthieu M. Mention, Matthew A. P. Turner, Fanny Brunissen, Vasilios G. Stavros, Gil Garnier, Florent Allais, Kei Saito
Summary: A study synthesized novel bio-based photo-crosslinkable lignin- and glycerol-derived polyfunctional monomers with cinnamate groups for the development of reversible self-healing materials. Through a Structure-Activity Relationship (SAR) study, the structural design of these monomers was optimized to enhance the self-healing capacity, leading to the creation of a new family of environmentally-friendly materials with wide applications. Computational density-functional theory (DFT) calculations were utilized to verify the SAR study in terms of dimerization energy of the synthesized monomers.
Article
Chemistry, Multidisciplinary
Yoonrae Cho, Jessica A. Muhlenkamp, Allen G. Oliver, Jason C. Hicks
Summary: The synthesis and application of nickel single sites isolated on Wells-Dawson polyoxometalate defects as stable and regenerable catalysts for ethylene oligomerization have been reported in this study.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Rui Zhong, Liping Cui, Kai Yu, Jinghua Lv, Yuhang Guo, Enmin Zhang, Baibin Zhou
Summary: Two Wells-Dawson arsenotungstate coordination polymers were assembled via a hydrothermal method, showing unique structures and excellent electrochemical performance, including high specific capacitance, good cycling stability, and superior electrical conductivity.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Chenyue Sun, Julius J. Oppenheim, Grigorii Skorupskii, Luming Yang, Mircea Dinca
Summary: In this study, the first 3D-connected crystalline organic polymer with permanent porosity, polyMTBA, was reported. Its formation mechanism and properties were described in detail, providing a new approach for topochemical polymerization.
Article
Chemistry, Multidisciplinary
J. E. Madhusree, Pranay R. Chandewar, Debaprasad Shee, Sib Sankar Mal
Summary: The study focuses on the nanofabrication of electroactive hybrid materials using activated carbon templates reinforced with Wells-Dawson polyoxotungstates (POMs) for high-performance supercapacitors. The integration of Wells-Dawson polyoxotungstates (P2W18) with activated carbon (AC) is analyzed for the first time, and its structural and electrochemical performances are discussed. The results show that a supercapacitor cell containing 5 wt% AC-P2W18 hybrid exhibits a specific capacitance of 289 F g-1 and an energy density of 40 W h kg-1, with 89% cyclic stability over 4000 cycles.
Article
Chemistry, Inorganic & Nuclear
Hafiz Muhammad Asif, Hafiza Fareeha Ashfaq, Yunshan Zhou, Lijuan Zhang, Arshad Iqbal, Xin Hu, Farooq Khurum Shehzad
Summary: Five covalently bonded polyoxometalate (POM)-porphyrin hybrids were synthesized by reacting different tris-functionalized porphyrins with the Wells-Dawson type polyoxometalate. Characterization of these hybrids using various techniques confirmed the formation of the hybrids and the electron transfer from the porphyrin moiety to the POM moiety through covalent linkage.
DALTON TRANSACTIONS
(2023)
Article
Polymer Science
Zhanyao Hou, Werner M. Nau, Richard Hoogenboom
Summary: A new supramolecular hydrogel that can transform into a covalently crosslinked hydrogel upon UV irradiation was developed. The presence of a cationic charge on anthracene side chains enhanced the binding affinity, facilitating hydrogel formation at lower concentrations. UV irradiation at different wavelengths demonstrated the reversible conversion to a chemical hydrogel, losing the dynamic nature responsible for shear-thinning behavior.
Article
Chemistry, Multidisciplinary
Trenton C. Gallagher, Che-Yu Wu, Marcos Lucero, Sean K. Sandstrom, Lindsey Hagglund, Heng Jiang, William Stickle, Zhenxing Feng, Xiulei Ji
Summary: This study reports a dual-ion battery using copper as an electrode for carbonate conversion reactions, which can be used for CO2 consumption and storage. The copper electrode exhibits reversible capacity and relatively stable cycling performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Food Science & Technology
Feng Zhou, Dehua Wang, Jiawen Zhang, Jing Li, Danning Lai, Shaoling Lin, Jiamiao Hu
Summary: In this study, an anti-bacterial film (Carr/POM film), which incorporated Wells-Dawson polyoxometalate K-6[Mo18O62P2] into kappa-carrageenan-based polymers, was prepared using the tape-casting method. The film showed desirable mechanical properties, thermal stability, and morphology. Additionally, it exhibited significant bactericidal activity against Escherichia coli and Staphylococcus aureus and was able to remove 99% of the bacteria on plastic, glass, and stainless steel surfaces. The film also demonstrated good biodegradability, decomposing in soil within a week.
Article
Chemistry, Physical
Paula S. Mateos, Claudia B. Ruscitti, Monica L. Casella, Silvana R. Matkovic, Laura E. Briand
Summary: The esterification reaction of oleic acid was used to screen the suitability of phosphotungstic-based Wells-Dawson compounds as catalysts. The results showed that the HPA/TiO2 catalyst exhibited the most promising performance. Nonlinear analysis was applied to determine the optimal conditions, resulting in high conversion and yield in the transesterification of waste cooking oil.
Review
Chemistry, Multidisciplinary
Jan-Hendrik Kruse, Marcel Langer, Iuliia Romanenko, Ivan Trentin, David Hernandez-Castillo, Leticia Gonzalez, Felix H. Schacher, Carsten Streb
Summary: Molecular metal oxides or polyoxometalates (POMs) exhibit unique properties, but their technological application is hindered by their molecular nature. Immobilizing POMs on heterogeneous substrates has become a central theme in research. Integration of POMs in soft matter matrices has led to breakthroughs in composite design. This review summarizes the progress in this emerging field, highlights challenges to be overcome, and provides insights into future directions.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Correction
Chemistry, Multidisciplinary
Dariusz Mitoraj, Igor Krivtsov, Chunyu Li, Ashwene Rajagopal, Changbin Im, Christiane Adler, Kerstin Koble, Olena Khainakova, Julian Hniopek, Christof Neumann, Andrey Turchanin, Ivan da Silva, Michael Schmitt, Robert Leiter, Tibor Lehnert, Jurgen Popp, Ute Kaiser, Timo Jacob, Carsten Streb, Benjamin Dietzek, Radim Beranek
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Review
Chemistry, Inorganic & Nuclear
Jian-Cai Liu, Jun-Wei Zhao, Carsten Streb, Yu-Fei Song
Summary: This paper reviews the design, synthetic strategies, structural classifications, and applications of high-nuclear polyoxometalate (POM) clusters. The unique behaviors of Mo, W, V, Nb, and Ta elements demonstrate the potential of POMs in fabricating diverse architectures and applications.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Biotechnology & Applied Microbiology
Isabel Franco-Castillo, Archismita Misra, Sebastien Laratte, Maxime Gommeaux, Robin Perarnau, Nathalie Vaillant-Gaveau, Clement Plerot, Carsten Streb, Scott G. Mitchell, Stepanhie Eyassutier Chiune
Summary: Phototrophic microorganisms can easily grow in underground heritage sites, causing biofilm growth. This study aims to limit biofilm growth on chalk substrates using biocidal treatments based on POM-ILs. The experiments show that POM-IL coatings are more effective than commercial biocidal treatments and can sustain prevention of biofilm growth on wet chalk.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2022)
Article
Nanoscience & Nanotechnology
Jun Jiang, Yanzhou Li, Lulu Liu, Lijuan Chen, Junwei Zhao, Carsten Streb, Yu-Fei Song
Summary: In this study, an unprecedented single-layer pure polyoxometalate (POM) 2D material was successfully prepared by ultrasonically exfoliating a one-dimensional (1D) chain heterometallic crystalline germanotungstate. The material exhibited peroxidase-mimicking properties and showed promising results in detecting uric acid. The research opens up new possibilities for the preparation of ultrathin pure POM 2D materials and expands the potential applications of POMs in biology and medicine.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yupeng Zhao, Dandan Gao, Si Liu, Johannes Biskupek, Ute Kaiser, Rongji Liu, Carsten Streb
Summary: Efficient and stable oxygen evolution reaction (OER) catalysts based on noble-metal-free materials are crucial for energy conversion and storage. This study demonstrated the conversion of polyoxometalate (POM)-doped ZIF-67 into a stable oxygen evolution electrocatalyst through chemical etching, cation exchange, and thermal annealing steps. Characterization techniques confirmed the synthesis of POM-doped ZIF-67 derived carbon-supported metal oxides, which exhibited structural and compositional advantages leading to low overpotential (306 mV at j=10 mA center dot cm(-2)) and long-term stability under harsh OER conditions (1.0 M aqueous KOH).
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Sebastian Knoll, Matthias Haenle, Alexander K. Mengele, Dieter Sorsche, Sven Rau, Carsten Streb
Summary: CLICK-chemistry is used to covalently link organic molecules with azides and alkynes. This study demonstrates the attachment of oligoaromatic organic moieties to Dawson-type polyoxometalates using CLICK-chemistry. The versatility and supramolecular chemistry of these systems are explored, and the charge-transfer behavior is found to depend on the size of the oligoaromatic pi-system.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Daniel Costabel, Afshin Nabiyan, Avinash Chettri, Franz Jacobi, Magdalena Heiland, Julien Guthmuller, Stephan Kupfer, Maria Waechtler, Benjamin Dietzek-Ivansic, Carsten Streb, Felix H. Schacher, Kalina Peneva
Summary: We present a photocatalytic setup using the organic photosensitizer diiodo-BODIPY, the non-precious-metal-based hydrogen evolution reaction catalyst (NH4)2[Mo3S13], and a polyampholytic unimolecular matrix poly(dehydroalanine)-graft-poly(ethylene glycol) in water. The system exhibits remarkable performance with high turnover numbers (TON > 7300) and turnover frequencies (TOF > 450 h-1), comparable to noble-metal-containing systems. Excited-state absorption spectra confirm the formation of a long-lived triplet state of the photosensitizer in both water and organic media. This system serves as a blueprint for developing noble-metal-free hydrogen evolution reaction in water, allowing for component optimization by modifying the substituent of the photosensitizer and the composition of the catalyst.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Editorial Material
Chemistry, Multidisciplinary
Carsten Streb
Summary: The atomically precise assembly of metal nanoparticles provides great opportunities for materials chemistry. Ring-shaped polyoxometalates have been used to stabilize Ag-30 nanoparticles with exposed surfaces.
Review
Chemistry, Multidisciplinary
Samar Batool, Marcel Langer, Stephen Nagaraju Myakala, Magdalena Heiland, Dominik Eder, Carsten Streb, Alexey Cherevan
Summary: This review summarizes prominent examples of thiomolybdate-based electro- and photocatalysis and provides a comprehensive analysis of their reactivities under homogeneous and heterogenized conditions. The study examines the active sites of thiomolybdates relevant for the hydrogen evolution reaction and discusses the shift from solution-phase to surface-supported thiomolybdates with a focus on applications in electrocatalysis and photocatalysis.
ADVANCED 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
Multidisciplinary Sciences
Stefan Repp, Moritz Remmers, Alexandra Stefanie Jessica Rein, Dieter Sorsche, Dandan Gao, Montaha Anjass, Mihail Mondeshki, Luca M. Carrella, Eva Rentschler, Carsten Streb
Summary: In this study, a coupled set of light-dependent and light-independent reaction equilibria controlling the mono- and di- metal-functionalization of a prototype molecular vanadium oxide cluster is reported. Mechanistic analyses reveal that coordination of a Mg2+ ion leads to the formation of mono-functionalized compound and release of a placeholder cation. Irradiation with visible light results in one-electron reduction, exchange of the second placeholder cation, and formation/crystallization of the di-metal-functionalized compound. Furthermore, the study demonstrates the feasibility of applying this synthetic concept to other metal cations.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jonas Eichhorn, Patricia Hofmann, Benedikt Bagemihl, Carsten Streb, Sven Rau, Felix H. Schacher
Summary: In this study, molecular ruthenium (II) photosensitizers were covalently embedded within block copolymer micelles for light-driven catalysis with excellent performance in hydrogen evolution reaction (HER) using molecularly dissolved thiomolybdate clusters. The block copolymers, PS-b-P(ClHPMA-co-MMS) and PS-b-P(bpyHPMA-co-MMS), were synthesized and functionalized with ruthenium (II) polypyridyl complex, and self-assembled into ruthenium-functionalized block copolymer micelles. The colloidal system outperformed the homogeneous reference in the hydrogen evolution reaction.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Stefan Repp, Kim Lara Junginger, Dieter Sorsche, Theresa Zorn, Ann-Christin Poeppler, Yuji Kikukawa, Yoshihito Hayashi, Carsten Streb
Summary: The self-assembly of polyoxometalates (POMs), molecular metal oxides, can be controlled by internal or external templates. This study explores how the interaction between internal templates (halides, oxoanions) and external organic templates (protonated cyclene species) affects the self-assembly of a model polyoxovanadate cluster. Crystallographic analyses, spectroscopic studies, and V-51 NMR spectroscopy provide insights into the formation of an intermediate vanadate species during the process. These findings contribute to the development of template-driven synthetic chemistry of polyoxovanadates.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Yupeng Zhao, Dandan Gao, Johannes Biskupek, Ute Kaiser, Rongji Liu, Carsten Streb
Summary: The development of highly active and efficient catalysts based on earth-abundant elements is crucial for sustainable energy conversion technologies. This study successfully used a modified Keggin-type polyoxometalate as a precursor to chemically modify a zeolitic imidazolate framework, resulting in a composite catalyst with promising electrocatalytic performance in the oxygen evolution reaction. The synthetic approach used in this study could lead to the design of new highly reactive catalysts for targeted reactions.
RESULTS IN CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Mengjiao Dong, Liyun Liao, Chensheng Li, Yingxiao Mu, Yanping Huo, Zhong-Min Su, Fushun Liang
Summary: This study investigates the influence of the polarity of polymer matrices on persistent room-temperature phosphorescence (pRTP). It is discovered that intense phosphorescence emission can be achieved in highly polar matrices such as polyacrylic acid (PAA). The dipole-dipole interaction between the polar fluorophore and polar matrix is proposed to stabilize the excited state and facilitate the generation of efficient room-temperature phosphorescence emissions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Han-Jiang Yang, Weijia Xiang, Xiangzhou Zhang, Jin-Yun Wang, Liang-Jin Xu, Zhong-Ning Chen
Summary: This article reports a 2D copper(I)-based cluster material for X-ray imaging, which exhibits ultra-high spatial resolution, high photoluminescence efficiency, and low detection limit. The material shows excellent linear response to X-ray dose rates and light output, and has the best spatial resolution among reported lead-free metal halide hybrids.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Review
Materials Science, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Dayeong Kwon, Jinsoo Joo
Summary: Donor-acceptor heterostructures using organic-inorganic halide perovskites, two-dimensional transition metal dichalcogenides, pi-conjugated organic small/macro molecules, and quantum dots are promising platforms for exciton-based photonics and optoelectronics. Hetero-interlayer excitons and hetero-intermolecular excitons formed through optical and/or electrical charge transfer in various heterostructures are important quasi-particles for light emission, detection, and harvesting systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Liemao Cao, Xiaohui Deng, Zhen-kun Tang, Rui Tan, Yee Sin Ang
Summary: We investigate the interface properties between WSi2N4 and Mo2B, O-modified Mo2B, and OH-modified Mo2B nanosheets. We find that WSi2N4 and Mo2B form n-type Schottky contacts, while functionalizing Mo2B with O and OH leads to the formation of both n-type and p-type ohmic contacts with WSi2N4. Additionally, we demonstrate the emergence of quasi-ohmic contact with ultralow lateral Schottky barrier and zero vertical interfacial tunneling barriers in Mo2B(OH)2-contacted WSi2N4.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ga Eun Kim, Hae-Jin Kim, Heesuk Jung, Minwoo Park
Summary: This study presents a solution to the commercialization challenges of flexible LEDs based on MAPbBr(3) by incorporating polyurethane and an In-Ga-Zn-Sn liquid alloy. The designed devices showed high flexibility, efficiency, and durability, with improved electron injection and reduced defects, making them promising for next-generation displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tao Shen, Zeng Wu, Zhen Jiang, Dongsheng Yan, Yan Zhao, Yang Wang, Yunqi Liu
Summary: Sidechain engineering is an important molecular design strategy for tuning the solid-state packing and structural ordering of conjugated polymers. The effects of sidechain direction on the optoelectronic properties of polymers and device performance were systematically investigated in this study. The results demonstrate that tuning the sidechain substitution direction can effectively improve the molecular structure and light absorption properties of polymers, providing new insights for the rational design of functional polymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Lotte Clinckemalie, Bapi Pradhan, Roel Vanden Brande, Heng Zhang, Jonathan Vandenwijngaerden, Rafikul Ali Saha, Giacomo Romolini, Li Sun, Dirk Vandenbroucke, Mischa Bonn, Hai I. Wang, Elke Debroye
Summary: In this study, a facile strategy using a non-conductive polymer was proposed to fabricate stable, pinhole-free thick films. The effect of introducing a second phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport was investigated. The dual phase devices exhibited improved stability and more effective operation at higher voltages in X-ray detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jingye Zou, Shenglan Hao, Pascale Gemeiner, Nicolas Guiblin, Omar Ibder, Brahim Dkhil, Charles Paillard
Summary: When rare-earth ions are embedded in a ferroelectric material, their photoluminescence can serve as an all-optical probe for temperature, electric field, and mechanical stimulus. However, the impact of ferroelectric phase transitions on photoluminescence is not well understood. In this study, we demonstrate changes in the photoluminescence of green emission bands during critical ferroelectric transitions in an Er-doped BaTiO3 material. We also find that the intensity ratio and wavelength position difference of sub-peaks provide information on the phase transitions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jiangchao Han, Daming Zhou, Wei Yang, Chen Lv, Xinhe Wang, Guodong Wei, Weisheng Zhao, Xiaoyang Lin, Shengbo Sang
Summary: Rare type-II spin-gapless semiconductors (SGSs) have attracted increasing attention due to their unique spin properties. In this study, the interface contacts and spin transport properties of different devices composed of VSi2P4 ferromagnetic layers were investigated. The results show that VSi2P4 is a promising material for designing vertical van der Waals heterostructures with a giant tunnel magnetoresistance (TMR) in spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tianqi Zhao, Renagul Abdurahman, Qianting Yang, Ruxiangul Aiwaili, Xue-Bo Yin
Summary: In this study, we designed and prepared Cr and Ba-doped gamma-Ga2O3 nanoparticles to achieve near-infrared emission and enhance the emission intensity. The emission mechanism was proposed based on the trap depth, band gap, and energy levels of Cr ions. The ratiometric temperature sensing and encryption information transfer demonstrated the potential applications of this technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar
Summary: In this study, a new spin-gapless semiconductor material CoFeMnSn is reported, and its stable structure and spin-polarized band structure are determined through experimental realization and theoretical calculations. The compound exhibits a high ferromagnetic transition temperature, making it excellent for room temperature applications. The nearly temperature-independent resistivity, conductivity, and carrier concentration of the compound, adherence to the Slater-Pauling rule, and the high intrinsic anomalous Hall conductivity achieved through hole doping further confirm its spin-gapless semiconductor nature. Additionally, the compound's SGS and topological properties make it suitable for spintronics and magneto-electronics devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ikumi Aratani, Yoji Horii, Yoshinori Kotani, Hitoshi Osawa, Hajime Tanida, Toshiaki Ina, Takeshi Watanabe, Yohko F. Yano, Akane Mizoguchi, Daisuke Takajo, Takashi Kajiwara
Summary: In this study, two-dimensional arrays of single-molecule magnets (SMMs) based on metal-organic frameworks (MOFs) were systematically modified through Langmuir-Blodgett methods and chemical modifications. The introduction of bulky alkoxide groups induced structural changes and perpendicular magnetic anisotropy. This research provides a promising strategy for the construction of high-density magnetic memory devices using molecular spintronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Zonghao Lei, Houhe Dong, Lijie Sun, Bing Teng, Yanfei Zou, Degao Zhong
Summary: Researchers have successfully developed four different up-conversion phosphors based on the Eulytite-type host Ba3Yb(PO4)(3). The optical temperature sensing properties of these phosphors were thoroughly investigated, and it was found that Ba3Yb(PO4)(3):Tm/Er/Ho showed potential for optical temperature measurement applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
C. Roncero-Barrero, M. A. Carvajal, J. Ribas-Arino, I. de P. R. Moreira, M. Deumal
Summary: This study computationally investigates the conductivity of four isostructural compounds with different Se contents, and reveals the parameters that define their conductivity in stable organic radical materials. The results provide insights into the influence of Se content on the conductivity and highlight the importance of considering multiple parameters in understanding the trends in conductivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Remi Arras, Kedar Sharma, Lionel Calmels
Summary: In this study, we investigated the interplay between structural defects in NiFe2O4, showing that the complex formed by a Ni-Oh/Fe-Td-cation swap and a neutral oxygen vacancy is more stable than these two isolated defects, and significantly reduces the width of the minority-spin band gap.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
