Article
Chemistry, Multidisciplinary
Ya-Di Zhang, Le Ye, Na Wang, Le-Ping Miao, Heng-Yun Ye, Chao Shi
Summary: New hybrid nitrate perovskites with structural diversity and tunable ferroelectricity have been synthesized, providing a promising platform for achieving novel properties and potential applications.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Biochemistry & Molecular Biology
Dagmara Stefanska
Summary: Hybrid organic-inorganic compounds crystallizing in a 3D perovskite-type architecture have gained significant attention due to their multifunctional properties. This study presents the optical properties of six hybrid hypophosphite perovskites containing manganese ions and reveals a correlation between their structural features and optical properties. Additionally, the broad infrared luminescence of these compounds is examined for potential application in indoor lighting systems for plant growth.
Article
Materials Science, Ceramics
Priyanka Singh, Brajendra Singh, Mukul Gupta
Summary: This study investigated the positive magneto capacitance in La0.66Pb0.3Mn0.4Ti0.56O3 and negative magneto capacitance in La0.7Pb0.3Mn0.4Fe0.6O3 due to interactions of different valence states, with Fe-doped composition showing a significantly higher magnetic moment than Ti-doped composition.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Kai Li, Zhi-Gang Li, Baozhu Zhang, Yong-Qiang Chen, Huaqiang Cao, Wei Li
Summary: A new hybrid organic-inorganic perovskite, (R-3AQ)KI3, with a typical perovskite structure, has been synthesized and characterized. The material shows a reversible order-disorder phase transition and emits yellowish-green light under UV irradiation. The calculated electronic structure indicates a direct bandgap and the mechanical robustness of (R-3AQ)KI3 suggests its suitability for sensing applications.
Article
Chemistry, Multidisciplinary
Nikita I. Selivanov, Anna Yu. Samsonova, Ruslan Kevorkyants, Irina V. Krauklis, Yuri V. Chizhov, Boris V. Stroganov, Marios E. Triantafyllou-Rundell, Detlef W. Bahnemann, Constantinos C. Stoumpos, Alexei V. Emeline, Yury V. Kapitonov
Summary: The study introduces a new family of hybrid organic-inorganic 2D lead halides, reporting the first example of the hybrid organic-inorganic post-perovskite 3-cyanopyridinium lead tribromide (3cp)PbBr3. The new material exhibits unique structural connectivity and optical properties that show significant anisotropy within the inorganic layer plane.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Ramavath Babu, Anunay Samanta, Seelam Prasanthkumar, Lakshminarayana Polavarapu
Summary: In this study, hybrid Mn(II) halide (Cl, Br, and I) single crystals with near-unity photoluminescence quantum yield (PLQY) were prepared using the organic cation DMAPH and controlled Zn2+ doping/alloying. The PLQY of these crystals was stable for more than 60 days and could be improved by selective organic cations and doping/alloying strategies.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Le Wang, Haochen Sun, Chun Sun, Da Xu, Jiaqi Tao, Tong Wei, Zi-hui Zhang, Yonghui Zhang, Ziying Wang, Wengang Bi
Summary: A lead-free orange-red-emitting compound with high photoluminescence quantum yield was successfully synthesized, showing superior stability and retaining 60% of its initial photoluminescence intensity after 60 days in water. This compound has potential applications in optoelectronic devices.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Haizhen Wang, Jiaqi Ma, Dehui Li
Summary: Two-dimensional (2D) hybrid perovskites have attracted attention in optoelectronic fields due to their unique properties, which can be further enhanced through integration with other layered materials, leading to high-performance optoelectronic devices. This Perspective introduces the properties of 2D perovskites, discusses various heterostructures, and proposes future research directions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Miroslaw Maczka, Anna Gagor, Dagmara Stefanska, Jan K. Zareba, Adam Pikul
Summary: This study reports five novel hypophosphite perovskites and investigates their structure, magnetic, and photoluminescence properties. The results show that these materials have potential applications in the development of new functional materials, such as light emitting, ferroelectric, and multiferroic materials.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
De-Xuan Liu, Kai-Ping Xie, Wei-Xiong Zhang, Ming-Hua Zeng, Xiao-Ming Chen
Summary: A study presented four new 3D SCN--bridged molecular double perovskites, with frameworks exhibiting a high structural distortion and relatively strong structural rigidity.
Article
Chemistry, Inorganic & Nuclear
Xusheng Zhang, Xingxing Jiang, Kunjie Liu, Liubing Fan, Jindong Cao, Shihui He, Na Wang, Jing Zhao, ZheShuai Lin, Quanlin Liu
Summary: Organic-inorganic metal halides (OIMHs) with excellent photoelectric properties have been studied. This research reports the synthesis and characterization of three isostructural OIMHs, with (C2H8N)4InCl7 showing the strongest orange-red photoluminescence and high quenching temperature. This indicates their potential for applications in phosphor-converted light-emitting diodes.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Zhi-Yuan Yue, Rong-Meng Liao, Wang Luo, Na Wang, Le-Ping Miao, Heng-Yun Ye, Chao Shi
Summary: Organic-inorganic hybrid molecular ferroelectrics have attracted attention in the research of ferroelectric materials. Recently, rare hybrid bimetal molecular ferroelectrics have been explored to achieve excellent ferroelectric properties. A chiral nitrite-based hybrid bimetal molecular ferroelectric material was reported, showing a ferroelectric-paraelectric phase transition at 343 K with a spontaneous polarization of 0.52 mu C cm(-2) and a coercive field of 48 kV cm(-1). The origin of the ferroelectricity was attributed to the rapid rotation of the organic cation and slight order-disorder transition of the NO2- anion.
Article
Chemistry, Inorganic & Nuclear
Zheng Zhang, Hadiah Fattal, Tielyr D. Creason, Mehran Amiri, Alexander Roseborough, Isaiah W. Gilley, May Nyman, Bayram Saparov
Summary: Recently, the solution chemistry of a model indium halide system, methylammonium (MA)-In-Br, was studied using a combination of various techniques. The results showed that under different loading ratios of reactants, indium could form either octahedral or tetrahedral anions in solution, or a combination of both. The understanding of the solution chemistry of this system led to the targeted crystallization of two novel compounds. These findings highlight the importance of understanding the solution chemistry of multinary metal halide systems for the discovery of functional materials for practical applications.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Jan A. Zienkiewicz, Maciej Ptak, Dawid Drozdowski, Katarzyna Fedoruk, Mariusz Stefanski, Adam Pikul
Summary: This study reports the synthesis and investigation of a novel one-dimensional hybrid organic-inorganic chloride. The crystals undergo structural phase transitions at low temperatures and exhibit magnetic and optical properties.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Wen Kiat Chan, Jiawei Chen, Donglei Zhou, Junzhi Ye, Ricardo Javier Vazquez, Cheng Zhou, Guillermo Carlos Bazan, Akshay Rao, Zhongzheng Yu, Timothy Thatt Yang Tan
Summary: This study reports on the synthesis and photophysical characterization of inorganic-organic hybrid perovskite superstructures (CsPbBr3 SSs) with unique photophysical properties. These SSs exhibit large emission red-shifts and super-radiant burst emissions, making them promising for applications in displays, lasers, and photodetectors.
Article
Chemistry, Multidisciplinary
Yulan Tian, Huaqiang Cao, Haijun Yang, Wenqing Yao, Jiaou Wang, Zirui Qiao, Anthony K. Cheetham
Summary: In this study, kinetic studies were conducted on spin catalysis reactions using electron spin resonance spectroscopy. Graphene belts synthesized by radical coupling method were used as catalysts. The results showed that sigma-type free radical species played a dominant role in the catalytic activity through spin-spin interaction. The spin catalysis mechanism was found to be applicable in both the oxygen reduction reaction and organic synthesis. The graphene belt spin catalyst demonstrated excellent performance with high ORR half-wave potential and long-term stability, as well as high conversion and yield in benzylamine coupling with molecular oxygen to generate imine.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Navneet Matharoo, Mrinalini G. Walawalkar, Ramaswamy Murugavel
Summary: The reactivity of two different phosphate esters with calcium ions was investigated in this study. The reaction between calcium oxide and a mixture of mono/bis 2-ethylhexyl phosphate and 1,10-phenanthroline resulted in the formation of a 1-D polymer [(phen)Ca(ehpH)(2)](n) (1). On the other hand, the reaction of Ca(OAc)(2) with trimethyl phosphate in the presence of 1,10-phenanthroline led to the formation of needle-shaped colorless crystals of [(phen)Ca(OAc)(2)](n) (2). Compounds 1 and 2 were characterized using various spectroscopic and analytical techniques, and their solid-state structures were determined by single crystal X-ray diffraction studies. Compound 1, with its arrangement of rigid and flexible parts, was found to exhibit interesting thermal behavior.
DALTON TRANSACTIONS
(2023)
Article
Nanoscience & Nanotechnology
Rebecca C. Vincent, Anthony K. Cheetham, Ram Seshadri
Summary: Oxides of molybdenum (MoOx) exhibit a diverse structural chemistry and varied redox behavior. Reduced Mo oxides, including MoO3 and MoO2, show promising potential as Li-ion battery electrode materials. The crystal structure of these oxides significantly impacts their battery performance, making them an important focus of study. By compiling electrochemical studies from 1971 to 2022, it is found that certain oxides display high reversible capacities for Li+ storage, but their redox voltages may hinder maximizing energy density when paired with other materials.
Article
Chemistry, Multidisciplinary
Mengting Jin, Manoj Ravi, Chen Lei, Christopher J. Heard, Federico Brivio, Zdenek Tosner, Lukas Grajciar, Jeroen A. van Bokhoven, Petr Nachtigall
Summary: Through experimental Al-27 NMR spectroscopy and computational data, this study reveals the detailed structure and formation mechanisms of zeolite framework-associated octahedral aluminium for the first time. The octahedral Lewis acid site becomes kinetically allowed and thermodynamically stable under wet conditions in the presence of multiple nearby Bronsted acid sites. The critical condition for the existence of such octahedral Lewis acid sites appears to be the availability of three protons.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Priya Pandey, Gunasekaran Manibalan, Ramaswamy Murugavel
Summary: Five dinuclear Zn and Cd carboxylate complexes were synthesized by reacting M(OAc)2.2H2O (M = Zn and Cd) with a disubstituted aromatic carboxylic acid and various five-membered aromatic cyclic amines in methanol. The coordination mode of the carboxylate and the size of the metal ion dictated the structures of the binuclear products. The complexes showed good luminescent properties.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Physical
Aditya Borah, Jayeeta Saha, Sunita Sharma, Savi Chaudhary, Sandeep K. Gupta, Gopalan Rajaraman, Chandramouli Subramaniam, Ramaswamy Murugavel
Summary: We demonstrate a new approach using cobaltorganophosphate D4R cage-clusters as bifunctional heterogeneous catalysts for electrochemical water splitting. The electronic and steric modifications on the clusters are achieved through trapping of fluoride ion and functionalization of pyridines. The approach significantly reduces charge density at the metal, leading to energetically favorable water coordination and improved kinetics of water splitting.
Article
Materials Science, Multidisciplinary
Wei Fu, Huaqiang Cao, Anthony K. K. Cheetham
Summary: Quantum dots (QDs) with non-blinking applied in bio-imaging play a vital role in understanding cellular dynamics. Antbunching is not sufficient to demonstrate a single QD, and blinking behavior is characteristic of the single QD due to its discrete energy levels. A new method using catalytic reaction to transform a single graphene quantum dot from non-blinking to blinking is reported, which helps identify a single QD and understand its catalytic and kinetic behaviors.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Widianto P. Moestopo, Sammy Shaker, Weiting Deng, Julia R. Greer
Summary: This article introduces a new class of architected materials with interwoven components and micro-knots as building blocks. Tensile experiments show that the knot topology allows for shape retention, leading to increased absorbed energy and failure strain compared to woven structures. This exploration unlocks the potential for highly extensible low-density materials with tunable shape reconfiguration and energy absorption capabilities.
Article
Chemistry, Multidisciplinary
Greggory T. Kent, Emily Morgan, Kaitlin R. Albanese, Anna Kallistova, Alexandra Brumberg, Linus Kautzsch, Guang Wu, Pratap Vishnoi, Ram Seshadri, Anthony K. Cheetham
Summary: Halide double perovskites [A(2)M(I)M(III)X(6)] are important materials that have gained attention as non-toxic alternatives to lead iodide perovskites in optoelectronic applications. While chloride and bromide double perovskites have been extensively studied, the characterization of iodide double perovskites is rare. In this study, predictive models were used to synthesize and characterize five iodide double perovskites with the general formula Cs(2)NaLnI(6) (Ln=Ce, Nd, Gd, Tb, Dy). The complete crystal structures, structural phase transitions, optical, photoluminescent, and magnetic properties of these compounds are reported.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
Federico Brivio, Andrew M. Rappe, Leeor Kronik, Dan Ritter
Summary: In this study, we investigate the interface between GaN and strained AlN using first principles calculations. A slab model is employed to compensate polarization effects via surface fractional-charge pseudo-hydrogen atoms. Our results reveal that a two-dimensional carrier electron or hole gas spontaneously forms in response to different compensating surface charges, without the presence of in-gap surface states.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Emily E. Morgan, Greggory T. Kent, Arava Zohar, Anthony O'Dea, Guang Wu, Anthony K. Cheetham, Ram Seshadri
Summary: We have reported hybrid and all-inorganic double perovskites of d(2) W4+ with the formula A(2)WCl(6) (A = CH3NH3+, Rb+, and Cs+), which can be distinguished from similar compounds obtained by hydrothermal methods based on structural, spectroscopic, and magnetic properties. The latter are green and incorporate oxygen, having the actual formula Cs2WO x Cl6-x and distinct optical absorption and emission behavior. The local-moment magnetism of the pure-red d(2) compounds reported here does not correspond to the appropriate Kotani model, suggesting undiscovered physics in these systems.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zachery W. B. Iton, Brian C. Lee, Abigail Y. Jiang, Seong Shik Kim, Michael J. Brady, Sammy Shaker, Kimberly A. See
Summary: Next-generation batteries based on sustainable multivalent working ions have the potential to improve current battery systems. However, the understanding of multivalent ionics in solids is lacking, hindering the development of such batteries. This study shows that exposure to water vapor can significantly enhance the multivalent ion conduction of electronically insulating solids such as ZnPS3.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Nanoscience & Nanotechnology
Daming Feng, Lixue Zhou, Timothy J. White, Anthony K. Cheetham, Tianyi Ma, Fengxia Wei
Summary: Electrocatalytic synthesis under mild conditions has emerged as an important alternative for industrial applications, particularly in the green ammonia industry. Metal-organic frameworks (MOFs) are competitive candidates for efficient electrocatalytic NH3 synthesis from nitrogen-containing molecules or ions. This review collects and discusses recent advances in MOF-derived electrocatalysts for NH3 electrosynthesis, including their application in N-2 and NO3- reduction reactions. The challenges and prospects for the rational design and fabrication of MOF-based electrocatalysts for electrochemical NH3 synthesis are also presented.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Ziliang Wang, Tara P. Mishra, Weihang Xie, Zeyu Deng, Gopalakrishnan Sai Gautam, Anthony K. Cheetham, Pieremanuele Canepa
Summary: The development of high-performance sodium ion batteries requires improved electrode materials. The energy and power densities of NaSICON electrode materials show promise for large-scale energy storage applications. However, practical issues such as limited sodium extraction in low Na content NaSICONs present a challenge. Therefore, it is important to quantify the Na-ion mobility in a wide range of NaSICON electrodes.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Aditya Borah, Sourav Dey, Sandeep K. Gupta, Gopalan Rajaraman, Ramaswamy Murugavel
Summary: Single-ion magnets (SIMs) have attracted wide attention in recent years. Despite tremendous progress in late lanthanide SIMs, reports on early lanthanides exhibiting SIM characteristics are scarce. In this study, a series of five novel 18-crown-6 encapsulated mononuclear early lanthanide(III) organophosphates were synthesized, and magnetic susceptibility measurements reveal that Ce and Nd complexes are field-induced single-ion magnets with significant barrier heights.
DALTON TRANSACTIONS
(2023)
