Article
Chemistry, Multidisciplinary
Maria Jose Heras Ojea, Jeff M. Van Raden, Shayan Louie, Richard Collins, Daniel Pividori, Jordi Cirera, Karsten Meyer, Ramesh Jasti, Richard A. Layfield
Summary: The addition of bipyridyl-embedded cycloparaphenylene nanohoop to an iron(II) complex leads to a distorted octahedral structure with spin-crossover behavior. Computational studies suggest that the size and curvature of the nanohoop play a critical role in determining the SCO properties of the iron(II) complex.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Shao-Dong Su, Yue-Hong Wen, Xin-Tao Wu, Tian-Lu Sheng
Summary: This article investigates the properties of a diruthenium-based mixed valence complex and its oxidation products. The results reveal that the complex exhibits different MMCT transitions upon oxidation. TDDFT calculations support the hypothesis that one of the transitions may be attributed to a specific structural change in the complex.
DALTON TRANSACTIONS
(2022)
Article
Geochemistry & Geophysics
Yaxiong Jiang, Luzheng Chen, Shenghong Duan, Qifang Gao, Fan Yi, Yongjun Xian
Summary: The occurrence features of ultrafine iron minerals in a cyanide leaching residue from a superlarge gold mining company in Yunnan Province were determined. The residue contains mainly magnetite and limonite particles with particle sizes ranging from 9.6 mu m to 75.0 mu m. Low-intensity magnetic separation and pulsating high-gradient magnetic separation were proposed to recover magnetite and limonite from the residue, producing high-grade concentrates. This research outcome provides valuable reference for the economic and effective utilization of iron resources from such residues.
Article
Chemistry, Inorganic & Nuclear
Volker Jens Eilrich, Toni Grell, Peter Loennecke, Chen Song, Joerg Matysik, Evamarie Hey-Hawkins
Summary: The reaction between tetra-tert-butylcyclotetraphosphane cyclo-((PBu)-Bu-t)(4) (L) and [AuCl(tht)] results in the formation of gold(I) complexes with varying numbers of gold(I) chloride fragments coordinated by the ligand. The dynamic behavior of these complexes was investigated through various experimental methods.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Huan Wang, Michael B. Cleary, Luke C. Lewis, Jeffrey W. Bacon, Peter Caravan, Hannah S. Shafaat, Eric M. Gale
Summary: This study presents a novel strategy for biochemical control over Fe3+ ions, demonstrating precise manipulation of Fe3+ complex properties through ligand design. By mediating the transformation through carboxylesterase, a substantial increase in Fe3+ high-spin relaxivity was achieved, indicating a potential advancement in aqueous Fe3+ magnetic resonance sensor technology.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Nanoscience & Nanotechnology
Arunima Rajan, Niroj Kumar Sahu
Summary: Magnetically induced hyperthermia using iron oxide nanoparticles presents an effective alternative to traditional cancer treatments, with monodisperse oleate-coated magnetite nanorods demonstrating promising performance in biological studies.
ACS APPLIED NANO MATERIALS
(2021)
Article
Pharmacology & Pharmacy
Barbara Freis, Maria De Los Angeles Ramirez, Celine Kiefer, Sebastien Harlepp, Cristian Iacovita, Celine Henoumont, Christine Affolter-Zbaraszczuk, Florent Meyer, Damien Mertz, Anne Boos, Mariana Tasso, Sonia Furgiuele, Fabrice Journe, Sven Saussez, Sylvie Begin-Colin, Sophie Laurent
Summary: Functionalized iron oxide nanoparticles (IONPs) with different shapes and sizes are synthesized and coated with dendron molecules to ensure biocompatibility and colloidal stability. These IONPs show promise in combining magnetic hyperthermia (MH) and photothermia (PTT) for cancer therapy. The 22 nm nanospheres and the 19 nm nanocubes exhibit the most promising theranostic properties, including efficient MRI contrast and hyperthermia abilities.
Article
Metallurgy & Metallurgical Engineering
Weichao Li, Wengang Liu, Wenbao Liu, Shuaichao Wang, Wenhan Sun
Summary: This study presents a novel strategy for the treatment of metal ions in leaching solutions using hydrogel-like beads. Carboxymethyl cellulose-iron (CMC-Fe) hydrogel was synthesized to remove iron-cyanide complex ions from cyanide leaching solutions. The adsorbent, carboxymethyl cellulose-Prussian blue (CMC-PB) hydrogel, obtained after iron-cyanide complex ion adsorption, can directly remove Cs+ ions from solution. The hydrogel exhibits exceptional adsorption performance and high selectivity.
Article
Chemistry, Inorganic & Nuclear
Sandeep Kumar, Nivedita Chaudhri, W. Ryan Osterloh, Karl M. Kadish, Muniappan Sankar
Summary: A series of nickel(ii) monobenzochlorins and monobenzoporphyrins were synthesized and characterized for their physicochemical and anion sensing properties. One compound exhibited a unique conformation and reversible response to basic anions, while another selectively detected cyanide ions irreversibly.
DALTON TRANSACTIONS
(2021)
Review
Chemistry, Inorganic & Nuclear
Yuliang Li, Ni Wang, Haitao Lei, Xialiang Li, Haoquan Zheng, Hongyan Wang, Wei Zhang, Rui Cao
Summary: Metal macrocyclic complexes with square-planar M-N-4 coordination sites, such as metal porphyrins, have been extensively studied as catalysts for electrocatalytic ORR. The immobilization of these catalysts on appropriate supporting materials is crucial for practical applications. N-4-metallomacrocycles show promising potential for use in metal-air batteries.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Environmental Sciences
Yunmei Wei, Lianying Chen, Gangzhen Jiao, Yi Wen, Qin Liao, Hongli Zhou, Shengjun Tang
Summary: This study investigated a biochar-based sorbent material for the efficient removal of metal-cyanide complexes from wastewater. The results showed that the iron-modified biochar composites had a high affinity for the metal-cyanide complexes, with a maximum sorption capacity of 580.96 mg/g for ferricyanide and 588.86 mg/g for tetracyanonickelate. The modification of the biochar altered the surface charge and promoted the formation of reductive-Fe minerals, facilitating the adsorption/precipitation of the target contaminants.
Article
Biochemistry & Molecular Biology
Gloria Zanotti, Patrizia Imperatori, Anna Maria Paoletti, Giovanna Pennesi
Summary: This study investigates more sustainable reaction conditions for the synthesis of metallophthalocyanines, using different reaction media, metal ions, and bases to enhance sustainability and scalability. Results show a reactivity trend of Cu > Co > Zn in the new reaction media, and successful synthesis of soluble derivatives with a satisfactory yield of 26%.
Article
Polymer Science
Anum Hayat, Mohammad Saeed Iqbal, Naveed Ahmad, Nabil K. Alruwaili, Atta Ur Rehman
Summary: An iron (III) complex with rhamnoxylan, a hemicellulose from Salvia plebeia seeds, was synthesized and exhibited good electrical and magnetic properties. In addition, the complex showed equivalent efficacy as a hematinic for treating iron deficiency anemia in a rabbit model compared to iron protein succinylate. Therefore, iron(III)-rhamnoxylan holds potential as a hematinic for treatment of iron deficiency anemia.
Article
Chemistry, Multidisciplinary
Charafa Souilah, Sergio A. Jannuzzi, Derya Demirbas, Sergei Ivlev, Marcel Swart, Serena DeBeer, Alicia Casitas
Summary: This study discloses a new reactivity mode for electrophilic cyano lambda(3)-iodanes as group transfer one-electron oxidants, which can be used to synthesize Fe-III and Fe-IV cyanide complexes. The synthesis of these complexes was achieved through consecutive single electron transfer processes or oxidation reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Yu Zhang, Toby Woods, Thomas B. Rauchfuss
Summary: The reaction of elemental chalcogens with [Fe(CN)(2)(CO)(3)](2-) leads to ferrous derivatives that isomerize in solution upon irradiation.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Kyle J. Howard-Smith, Alexander R. Craze, Ryuya Tokunaga, Takahiro Taira, Hyunsung Min, Matthew J. Wallis, Daniel J. Fanna, Shinya Hayami, Feng Li
Summary: Among the multitude of [FeIII(R-sal2323)]X complexes, only four have exhibited spin crossover (SCO) behavior according to the literature. In this study, we report four additional examples of [FeIII(R-sal2323)]X complexes (where R = Br, NEt2, and X = ClO4-, BF4-) that undergo thermal spin crossover. Magnetic susceptibility measurements reveal gradual and high-temperature spin transitions in all four compounds near room temperature. Our investigation shows that both intramolecular and intermolecular structural parameters have little effect on the SCO activity of these compounds, suggesting that many more compounds in the [FeIII(R-sal2323)]X family may exhibit SCO behavior at higher temperatures.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Tristan Castel, Anais Marchetti, Felix Houard, Nathalie Daro, Mathieu Marchivie, Guillaume Chastanet, Kevin Bernot
Summary: The synthesis of two polymorphs of the spin crossover coordination polymer {[Fe(Htrz)2(trz)](BF4)}n is explored using novel template-free methods. A one-pot synthesis approach and the addition of ultrasound pulses are used to control the local synthetic conditions and improve the phase purity of the product. These approaches lead to a significant reduction in particle size and the transition from a mixture of polymorphs to a pure phase, without the need for surfactants.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Biochemistry & Molecular Biology
Matthew J. J. Wallis, Hyunsung Min, Leonard F. F. Lindoy, Feng Li
Summary: In this study, five new dinuclear triple helicate compounds were presented, including [Mn2L3](ClO4)(4), [Co2L3](BF4)(4), [Ni2L3](BF4)(4), [Cu2L3](BF4)(4), and [Zn2L3](BF4)(4), which were characterized in both solution and the solid state. The influence of the coordinated metal ion on the helical structures and the orientations of the secondary binding domains was investigated. These findings provide a basis for the design and construction of new large metallosupramolecular architectures.
Article
Chemistry, Multidisciplinary
Avantika Hasija, Amy J. Thompson, Lakhvir Singh, S. N. Megha, Kiran S. R. N. Mangalampalli, John C. McMurtrie, Mitradip Bhattacharjee, Jack K. Clegg, Deepak Chopra
Summary: Organic materials have potential for efficient sensor development in medicinal and material science applications. Single crystals of 4CFNCS exhibit plastic deformation when bent, twisted, or coiled, which is confirmed by synchrotron micro-focus X-ray diffraction mapping. These crystals are incorporated into a flexible piezoresistive sensor using a composite of PEDOT: PSS/4CFNCS, showing impressive performance at high-pressure ranges (sensitivity 0.08 kPa(-1) above 44 kPa).
Article
Chemistry, Inorganic & Nuclear
Bahram Ghanbari, Leila Asadi Mofarrah, Jack K. Clegg
Summary: Two fluorescent metal-organic cages, 1 and 2, were synthesized by self-assembly of Co(II) centers with a new macrocyclic ligand. The structures of the cages were determined using various analytical techniques. Cage 1 exhibited selective and sensitive fluorescence quenching towards p-nitroaniline, detecting it at a concentration as low as 4.24 ppm. Cage 2, with a bromido ligand instead of chlorido, showed higher sensitivity but lower selectivity towards NACs than cage 1.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Gavin Hum, Si Jia Isabel Phang, How Chee Ong, Felix Leon, Shina Quek, Yi Xin Joycelyn Khoo, Chenfei Li, Yongxin Li, Jack K. Clegg, Jesus Diaz, Mihaiela C. Stuparu, Felipe Garcia
Summary: Artificial molecular machines, primarily using organic compounds, have received significant attention in the scientific community. However, the main group chemical space has been less explored in this field. This study introduces NH-bridged acyclic dimeric cyclodiphosphazane species as versatile building blocks for molecular machines and switches, opening up new possibilities for supramolecular chemistry and crystal engineering.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Biochemistry & Molecular Biology
Shintu Mathew, Kenneth Zhang, Xian Zhou, Gerald Muench, Francis Bodkin, Feng Li, Ritesh Raju
Summary: The anti-inflammatory investigation of the leaves of Backhousia myrifolia, an Australian indigenous plant, led to the discovery of six new peltogynoid derivatives named myrtinols A-F (1-6) and three known compounds 4-O-methylcedrusin (7), 7-O-methylcedrusin (8), and 8-demethylsideroxylin (9). The structures of all compounds were analyzed using spectroscopic data and X-ray crystallography. The compounds were evaluated for their anti-inflammatory activity, with compounds 5 and 9 showing promising potential.
Article
Chemistry, Multidisciplinary
Amy J. J. Thompson, Joshua A. A. Powell, Jamie N. N. Melville, John C. C. McMurtrie, Jack K. K. Clegg
Summary: Molecular crystals of aliphatic derivatives with noticeable elasticity were synthesized and their mechanisms of elasticity were studied. Crystallographic mapping at an atomic-scale revealed that the elasticity of these compounds is facilitated by expansion of their π-stacking interactions. The findings distinguish their mechanisms from the previously reported mechanism of bis(acetylacetonato)copper(II).
Article
Chemistry, Multidisciplinary
Samuel R. R. Wenger, Lyndon A. A. Hall, Deanna M. M. D'Alessandro
Summary: This paper describes the facile synthesis of a redox-active MOF/quinone composite, which can be used as a cathodic material for the electrochemical capture of CO2. Conventional adsorbents for CO2 capture typically utilize swings in temperature and/or pressure to adsorb and desorb CO2. In this work, the authors demonstrate the synthesis of a redox-active MOF-based adsorbent for the electrochemical capture of CO2, using spectroelectrochemistry to study the interaction between the adsorbent and CO2. This represents an advancement towards the scalable production of electro-swing adsorbents and shows the potential of MOFs for this process.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Amy J. Thompson, Kate M. L. Smith, Jack K. Clegg, Jason R. Price
Summary: CX-ASAP is a new open-source software project that aims to significantly reduce the time required for analyzing crystallographic data collected under different conditions. Written in Python3, CX-ASAP can automatically refine, finalize, and analyze data collections with varying temperatures, pressures, etc. It utilizes a reference structure to quickly identify problems, phase changes, and even compare models. Its modular design allows easy addition of new features and customized scripts to tailor to specific user needs. It is envisioned that CX-ASAP will bridge the increasing gap between fast data collection and slow data finalization.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2023)
Article
Chemistry, Multidisciplinary
Eleanor R. Kearns, Deanna M. D'Alessandro
Summary: This work investigates the application of two different solid-state kinetic models in the [2 + 2] photocyclization reaction of MOF materials, and finds that the Finke-Watzky model provides a more accurate fit for the data.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Hilaire Mba, Matthieu Picher, Nathalie Daro, Mathieu Marchivie, Philippe Guionneau, Guillaume Chastanet, Florian Banhart
Summary: Spin-crossover particles of [Fe(Htrz)2trz](BF4) with sizes of some hundred nanometers were studied by in situ electron microscopy. Despite their high radiation sensitivity, it was possible to analyze the particles by imaging and diffraction so that a detailed analysis of crystallographic defects in individual particles became possible. The presence of tilt boundaries, where the tilt axis is the direction of the polymer chains, was detected in each particle. The defect structure only changes after a high number of transformations between the low-spin and high-spin phases, which can be explained by the anisotropy of the atomic architecture within the crystals.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Aditya Ashok, Arya Vasanth, Tomota Nagaura, Caitlin Setter, Jack Kay Clegg, Alexander Fink, Mostafa Kamal Masud, Md Shahriar Hossain, Takashi Hamada, Miharu Eguchi, Hoang-Phuong Phan, Yusuke Yamauchi
Summary: This study reports a temperature-controlled crystallization technique using electrochemical deposition to produce metastable CuTe2 thin films that can function reliably under ambient conditions. The authors found that the seeding electrodes play a key role in the realization of the metastable phase in CuTe2 films. CuTe2 films deposited on Al electrodes exhibit superior crystallinity and long-term stability compared with those grown on a Au substrate.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Multidisciplinary
Lyndon A. Hall, Deanna M. D'Alessandro, Girish Lakhwani
Summary: Recently, there is growing interest in the use of chiral metal-organic frameworks (MOFs) and coordination polymers (CPs) for photonics applications. These materials offer the ability to tune their properties and realize new functionalities through the selection of metal and ligand components. This review focuses on the synthesis of chiral MOFs and CPs, their recent innovations in optical and photonics applications, as well as the challenges and potential solutions in this field. Overall, chiral MOFs and CPs show great promise for future technologies such as optical communication and computing, optical displays, and all-optical devices.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Qinyi Gu, Zi-Han Zhao, Bun Chan, Tong Yan, Jing-Lin Zuo, Deanna M. D'Alessandro, Cheng-Hui Li
Summary: A new Ni-dithiolene ligand was used to prepare a photothermal metal-organic framework (MOF) that showed efficient conversion of light into heat. The MOF had strong absorption in the near-infrared region due to the radical monoanion of the ligands, and the structure played an important role in the photothermal properties. The photothermal MOF was then doped into a self-healing polymer, enabling the composites to recover from dynamic damage using the heat generated by photostimulus.
ACS MATERIALS LETTERS
(2023)
