Article
Optics
Masato Iwaki, Ryo Tanaka, Kazuyoshi Uematsu, Mineo Sato, Kenji Toda
Summary: In this study, high-purity Eu2+-activated MSi2O2N2 phosphors were synthesized via a one-pot solid-state reaction. The experimental conditions such as raw materials and heating temperature were optimized. It was found that the formation of Eu2+-activated MSi2O2N2 depended on the intermediate compounds and the oxygen/nitrogen ratio. Furthermore, the particle morphology, photoluminescence and excitation measurement, quantum efficiencies, lifetime, and thermal quenching behaviors were systematically investigated.
JOURNAL OF LUMINESCENCE
(2023)
Article
Nanoscience & Nanotechnology
Thomas E. Shaw, Zahra Ali, Taylor M. Currie, S. Novia Berriel, Brian Butkus, J. Tyler Wagner, Konstantin Preradovic, Glenn P. A. Yap, Jennifer C. Green, Parag Banerjee, Alfred P. Sattelberger, Lisa McElwee-White, Titel Jurca
Summary: The synthesis, characterization, and thermogravimetric analysis of tris(N,N'-di-isopropylacetamidinate)molybdenum(III) (Mo(iPr-AMD)(3)) are reported. Mo(iPr-AMD)(3) is a rare example of a homoleptic mononuclear complex of molybdenum(III) and fills a longstanding gap in the literature of transition metal(III) trisamidinate complexes. Thermogravimetric analysis reveals excellent volatilization at elevated temperatures, indicating potential applications as a precursor for vapor phase deposition of Mo-based materials. The potential of Mo(iPr-AMD)(3) as a stable, high-temperature precursor for both chemical vapor deposition (CVD) and atomic layer deposition (ALD) processes is demonstrated. Overall, a rating of 8 out of 10 is given to this article.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Yang Gao, Junya Iihama, Daiki Hamana, Ryo Iwasaki, Sawao Honda, Toru Asaka, Munni Kumari, Tomokatsu Hayakawa, Samuel Bernard, Philippe Thomas, Yuji Iwamoto
Summary: A series of beta-SiAlON:Eu2+ phosphors were successfully synthesized through modification of single-source precursors with chemical modifiers and subsequent pyrolysis and heat treatment. The polymer-derived beta-SiAlON:Eu2+ phosphors exhibited high performance in terms of green emission, achieving the highest intensity under excitation at 460 nm.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Yang Gao, Ryo Iwasaki, Daiki Hamana, Junya Iihama, Sawao Honda, Munni Kumari, Tomokatsu Hayakawa, Samuel Bernard, Philippe Thomas, Yuji Iwamoto
Summary: In this study, the first synthesis method of beta-SiAlON:Eu2+ phosphors from single-source precursors was reported, and the reactions were studied through a series of analytical techniques. The synthesized beta-SiAlON:Eu2+ phosphors exhibited green emission under certain conditions.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Chemistry, Physical
Hiroto Mogi, Kosaku Kato, Shuhei Yasuda, Tomoki Kanazawa, Akinobu Miyoshi, Shunta Nishioka, Takayoshi Oshima, Ya Tang, Toshiyuki Yokoi, Shunsuke Nozawa, Akira Yamakata, Kazuhiko Maeda
Summary: By controlling the quality of the template, the structural properties of the resulting oxynitride can be altered, ultimately affecting photocatalytic activity. Using a template with higher crystallinity leads to the formation of larger oxynitride particles and enhances photocatalytic activity.
CHEMISTRY OF MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Kuntrapakam Hema, Arthi Ravi, Cijil Raju, Javed R. Pathan, Rishika Rai, Kana M. Sureshan
Summary: Topochemical polymerizations are solid-state reactions driven by the alignment of monomers in the crystalline state, offering precise control over the tacticity, packing, and crystallinity of the polymer formed. These reactions occur under solvent- and catalyst-free conditions, resulting in high yield and selectivity/specificity without the need for tedious chromatographic purification. The polymerizations can be highly attractive over traditional solution-phase synthesis, allowing for polymers with sophisticated structures and desired topologies.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Yanxin Liu, Lie Wu, Qian Liu, Lei Liu, Shanwu Ke, Zehui Peng, Tongyu Shi, Xinru Yuan, Hao Huang, Jia Li, Cong Ye, Paul K. Chu, Jiahong Wang, Xue-Feng Yu
Summary: Metal phosphide nanoribbons are synthesized to construct flexible photoelectronic memristors, exhibiting outstanding nonvolatile memory properties. This demonstrates the potential of metal phosphides in memristors for future optoelectronic neuromorphic computing.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Vignesh Athiyarath, Liby Ann Mathew, Yakai Zhao, Ravichandran Khazeber, Upadrasta Ramamurty, Kana M. Sureshan
Summary: By packing a polymer in different ways, polymorphs with different properties can be obtained. In this study, we designed an Aib-rich monomer that crystallizes as two polymorphs and one hydrate. Upon heating, both polymorphs undergo topochemical polymerization. Polymorph I undergoes single-crystal-to-single-crystal polymerization and exhibits a screw-sense reversing helical structure, while polymorph II becomes amorphous. Different polymorphs and polymers show different mechanical properties according to their crystal packing. This study demonstrates the future potential of polymorphism and topochemistry in obtaining polymer polymorphs.
Article
Chemistry, Multidisciplinary
Rishika Rai, Kana M. Sureshan
Summary: The designed heterochiral dipeptide monomer underwent topochemical azide-alkyne cycloaddition (TAAC) polymerization to form two different polymorphs: PI with parallel beta-sheet packing and PII with antiparallel beta-sheet packing. PI reacted spontaneously at room temperature while PII remained intact even after complete reaction. The resulting aerogels from these polymorphs also underwent spontaneous TAAC reaction to yield a pseudoprotein with alternate D- and L-amino acids.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Jianmei Chen, Xiaochun Liu, Hao Wang, Chao-Lung Chiang, Pengfei Hou, Jianmin Li, Huanyu Jin, Shujuan Liu, Xing Meng, Yan-Gu Lin, Jong-Min Lee, Qiang Zhao
Summary: Nitrogen-rich transition metal nitrides, such as sulfur-doped Mo5N6, have been synthesized through controlled ammoniation of MoS2. Experimental and theoretical studies reveal that sulfur dopants induce electron redistribution and optimize hydrogen adsorption energy, leading to exceptional hydrogen evolution reaction (HER) performance. This work offers a feasible strategy to enhance the electrocatalytic activity of transition metal nitrides through electronic structure refinement using heteroatom dopants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Ceramics
Raghunath Sharma Mukkavilli, Abhinav Saxena, Seulgi Ji, Ganesh Babu Thiyagarajan, Heechae Choi, Sanjay Mathur, Ravi Kumar
Summary: Tantalum oxynitride (TaOxN1-x) fibers with a diameter of 800 nm and without beads were successfully synthesized by adjusting the spinning solution composition and optimizing the collector distance and rotation speed. Structural analysis confirmed the monoclinic phase and clear splitting of X-ray photoelectron spectroscopy peaks, indicating the +5 oxidation state of tantalum. The resulting oxynitride fibers exhibited superior electrocatalytic performance compared to Ta2O5 oxide fibers, but this enhanced activity was suppressed in basic medium due to poisoning of the active sites caused by the high oxophilicity of tantalum ions. This work demonstrates a facile pathway for fabricating high-performance electrocatalysts based on TaOxN1-x fibers using a cost-effective and energy-efficient centrifugal spinning technique.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Xiaona Pan, Baojuan Xi, Huibing Lu, Zhengchunyu Zhang, Xuguang An, Jie Liu, Jinkui Feng, Shenglin Xiong
Summary: This study reports the synthesis of a novel hybrid architecture composed of MoO2.0N0.5 atomic nanoclusters bonded in nanosheets of N-doped carbon hierarchical hollow microspheres (MoO2.0N0.5/NC) as an anode material for sodium-ion batteries. The material exhibits excellent cycling stability and high rate capability.
NANO-MICRO LETTERS
(2022)
Article
Optics
A. B. Kulinkin, S. P. Feofilov, F. Piccinelli, A. M. Srivastava, M. Bettinelli
Summary: Low temperature site selective spectroscopy was used to investigate the distribution of Eu3+ ions in ordered and disordered pyrochlores, revealing the presence of multiple non-centrosymmetric sites in the Ca-pyrochlore and a single site with inversion symmetry in the Mg-pyrochlore. Possible explanations were provided for the high energy emission transition observed in the Ca-pyrochlore.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
Ying Zhang, Sijie Tong, Shuyao Cao, Fei Xing, Junzhan Zhang, Zongmo Shi
Summary: Plate-like perovskite CaMnO3 microcrystals with an average size of -21.89 mu m and a thickness of -3.18 mu m were successfully synthesized through topochemical microcrystal conversion reaction using layer-structured Ca3Mn2O7 pre-cursors. The stability of the perovskite phase was provided by the [MnO6] octahedrons and CaO layer. These plate-like microcrystals can serve as an excellent template for textured CaMnO3-based ceramics through template grain growth.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Yiming Zhang, Haoyang Wu, Mingli Qin, Yuelong Wang, Zhirui Zhang, Deyin Zhang, Baorui Jia, Xuanhui Qu
Summary: Polycrystalline aluminum oxynitride (AlON) powders were prepared by carbothermal reduction nitridation of amorphous precursor obtained by solution combustion synthesis (SCS). The research discussed the influences of different urea/aluminum nitrate nonahydrate ratio, calcining temperature, and holding time on the properties of products, providing valuable reference for the efficient synthesis of AlON powders.
CERAMICS INTERNATIONAL
(2021)
Review
Chemistry, Inorganic & Nuclear
Amparo Fuertes
PROGRESS IN SOLID STATE CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Hannah Johnston, Ashley P. Black, Paula Kayser, Judith Oro-Sole, David A. Keen, Amparo Fuertes, J. Paul Attfield
CHEMICAL COMMUNICATIONS
(2018)
Article
Chemistry, Multidisciplinary
Roberta Verrelli, Ashley Philip Black, Carlos Frontera, Judith Oro-Sole, Maria Elena Arroyo-de Dompablo, Amparo Fuertes, M. Rosa Palacin
Article
Materials Science, Ceramics
Stefania Sandoval, Elayaraja Muthuswamy, Jiewei Chen, Amparo Fuertes, Gerard Tobias, Alexandra Navrotsky
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Nanoscience & Nanotechnology
Amparo Fuertes
Editorial Material
Materials Science, Ceramics
Amparo Fuertes, Ralf Riedel
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Judith Oro-Sole, Ignasi Fina, Carlos Frontera, Jaume Gazquez, Clemens Ritter, Marina Cunquero, Pablo Loza-Alvarez, Sergio Conejeros, Pere Alemany, Enric Canadell, Josep Fontcuberta, Amparo Fuertes
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Inorganic & Nuclear
Judith Oro-Sole, Carlos Frontera, Ashley P. Black, Augustin Castets, Karen L. Velasquez-Mendez, Josep Fontcuberta, Amparo Fuertes
JOURNAL OF SOLID STATE CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Augustin Castets, Ignasi Fina, Jhonatan R. Guarin, Judith Oro-Sole, Carlos Frontera, Clemens Ritter, Josep Fontcuberta, Amparo Fuertes
Summary: Developing new synthetic methodologies for perovskite oxynitrides is challenging but essential. This study introduces a novel method for preparing LaTaON2, which can be used as a pigment and photocatalyst. The research reveals the different distribution of oxygen and nitrogen in the I2/m structure, suggesting the synthesis conditions influence the anion order of this perovskite.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Rafael Trocoli, Carlos Frontera, Judith Oro-Sole, Clemens Ritter, Pere Alemany, Enric Canadell, M. Rosa Palacin, Josep Fontcuberta, Amparo Fuertes
Summary: Magnetic frustration resulting from competing magnetic interactions leads to unusual ground states. In this study, the synthesis and engineered magnetic interaction design of a new ternary nitride MnTa2N4 were reported. The material exhibits strong magnetic frustration with short-range helicoidal magnetic order and coexistence of spin-glass-like or spin liquid textures.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Ashley P. Black, Jhonatan R. Guarin, Judith Oro-Sole, Alejandro R. Goni, Carlos Frontera, Amparo Fuertes
Summary: This paper reports the synthesis and luminescent properties of a new oxynitridosilicate NdEuSiO3N. The introduction of nitride induces a red shift in the emission wavelength of this compound.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Jhonatan R. Guarin, Carlos Frontera, Judith Oro-Sole, Jaume Gazquez, Clemens Ritter, Josep Fontcuberta, Amparo Fuertes
Summary: Europium tantalum perovskite oxynitrides were successfully prepared by a new high-temperature solid-state synthesis method. The crystal structure and magnetic properties of the materials can be tuned by different reactant mixtures and gas atmospheres. Among them, Eu3Ta3O3.66N5.34 is the first example of a triple perovskite oxynitride.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
E. Perez, N. M. Carretero, S. Sandoval, A. Fuertes, G. Tobias, N. Casan-Pastor
MATERIALS CHEMISTRY FRONTIERS
(2020)
Article
Chemistry, Multidisciplinary
Stefania Sandoval, Amparo Fuertes, Gerard Tobias
CHEMICAL COMMUNICATIONS
(2019)
Article
Chemistry, Multidisciplinary
Roberta Ceravola, Carlos Frontera, Judith Oro-Sole, Ashley P. Black, Clemens Ritter, Ignasi Mata, Elies Molins, Josep Fontcuberta, Amparo Fuertes
CHEMICAL COMMUNICATIONS
(2019)
