Article
Chemistry, Multidisciplinary
Raul Diaz-Torres, Wasinee Phonsri, Keith S. Murray, Phimphaka Harding, David J. Harding
Summary: Crystal packing has a strong influence on the spin crossover behavior, and the halogen substituents affect the crystal structure and magnetic behavior. The study of a series of compounds reveals that compounds 1 and 2 are stabilized in the low spin state, while compound 3 shows an abrupt hysteretic spin crossover. It is concluded that the orientation of the 1D pi-pi chains plays a key role in spin crossover behavior.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Raul Diaz-Torres, Guillaume Chastanet, Eric Collet, Elzbieta Trzop, Phimphaka Harding, David J. Harding
Summary: The influence of solvent on the spin crossover behavior of two solvates [Fe(qsal-I)(2)]NO(3 center dot)2ROH (qsal-I = 4-iodo-2-[(8-quinolylimino)methyl]phenolate; R = Me 1 or Et 2) is investigated. Solvate 1 undergoes a symmetry-breaking phase transition from a [HS] to [HS-LS] state at 210 K, while the EtOH solvate shows complete spin crossover at T-1/2 = 250 K. The MeOH solvate exhibits LIESST and reverse-LIESST from the [HS-LS] state, revealing a hidden [LS] state. Photocrystallographic studies on solvate 1 reveal re-entrant photoinduced phase transitions to a high symmetry [HS] phase or a high symmetry [LS] phase under irradiation at 980 nm or 660 nm, respectively. This study presents the first example of bidirectional photoswitchability and subsequent symmetry-breaking from a [HS-LS] state in an iron(III) spin crossover material.
Article
Chemistry, Physical
Ngoc Minh Tran, Marlene Palluel, Nathalie Daro, Guillaume Chastanet, Eric Freysz
Summary: In this study, the spin-state photoswitching process in Au@SCO nanohybrids made of gold nanorods is investigated, showing different dynamics under different excitation methods. It is found that the spin-state transition in the nanohybrids requires lower energy compared to SCO nanoparticles. A simple model is proposed to explain the experimental results.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Cyril Rajnak, Romana Micova, Jan Moncol, Lubor Dlhan, Christoph Krueger, Franz Renz, Roman Boca
Summary: The iron(iii) mononuclear complex [Fe(Cl-3,Cl-5-L)(NCSe)] exhibits a thermally induced spin crossover with a broad hysteresis width, showing different spin states at different temperatures. Analogous complexes of the [Fe(X-3,X-5-L)(Y)] type are high-spin over the whole temperature interval.
DALTON TRANSACTIONS
(2021)
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
Chemistry, Physical
Anastasia B. Andreeva, Khoa N. Le, Kentaro Kadota, Satoshi Horike, Christopher H. Hendon, Carl K. Brozek
Summary: This study combines experimental and computational approaches to identify the origin of cooperative interactions in metal-organic frameworks, demonstrating the importance of dynamic metal-linker bonding in triggering cooperative SCO transitions. The research highlights the significant role of dynamic bonding in the functional behavior of framework materials and provides a roadmap for understanding the manipulation of SCO behavior in general.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Kishalay Bhar, Wenbin Guo, Mathieu Gonidec, Venkata Nikhil M. Raj, Surabhi Bhatt, Franc Perdih, Philippe Guionneau, Guillaume Chastanet, Anuj K. Sharma
Summary: We synthesized a series of molecular complexes with spin crossover behavior and successfully observed their structures and transition processes in crystals. Complexes 1 and 2 exhibit complete and gradual spin crossover at higher temperatures, while complex 3 shows strong irreversible features at lower temperatures.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhi-Kun Liu, Zi-Shuo Yao, Jun Tao
Summary: Halogen-substituted Fe(III) compounds with different spin states were synthesized, some of which exhibited light-induced excited spin-state trapping effects and reversible light switching behaviors, providing insights for the development of switchable materials.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Roger Sanchis-Gual, Ramon Torres-Cavanillas, Marc Coronado-Puchau, Monica Gimenez-Marques, Eugenio Coronado
Summary: In this study, core@shell nanoparticles composed of a metallic Au nanostar core and a spin-crossover shell based on the coordination polymer [Fe(Htrz)(2)(trz)](BF4) were designed. The photothermal effect arising from the plasmonic properties of the Au nanostar allowed for a thermal spin transition of 60% of iron centers triggered by low intensity irradiation from a 808 nm laser within a thermal hysteresis. The nanostar shape's advantage lies in the hot spots at the branches, which generate significant near-infrared absorptions.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Ya-Nan Dong, Zhi-Kun Liu, Jin-Peng Xue, Zi-Shuo Yao, Jun Tao
Summary: A coordination polymer with a two-dimensional grid-like structure was found to exhibit unexpectedly large hysteresis loop and temperature-induced excited spin-state trapping effect.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Raul Diaz-Torres, Silvia Gomez-Coca, Eliseo Ruiz, Phimphaka Harding, David J. Harding
Summary: A family of heteroleptic spin crossover (SCO) complexes have been synthesized, and their spin transition properties vary with temperature. The magnetic properties of these complexes are significantly improved by slight changes in crystal packing, which enhance the cooperativity.
DALTON TRANSACTIONS
(2023)
Article
Biochemistry & Molecular Biology
Karim Affes, Yogendra Singh, Kamel Boukheddaden
Summary: This study examines the effect of random metal dilution on the thermal and structural properties of a spin-crossover single crystal. The research finds that at low dilution rates, the transition is of the first order, but increasing the concentration of dopants results in a decrease in cooperativity and gradual transformations. The study also observes significant changes in the organization of spin states during thermal transition, with a transition from single-domain nucleation to multi-droplet nucleation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Inorganic & Nuclear
Nataliya G. Spitsyna, Maxim A. Blagov, Vladimir A. Lazarenko, Roman D. Svetogorov, Yan Zubavichus, Leokadiya Zorina, Olga Maximova, Sergey A. Yaroslavtsev, Vyacheslav S. Rusakov, Grigory Raganyan, Eduard B. Yagubskii, Alexander N. Vasiliev
Summary: A potassium salt of the N2S2O2-coordination Fe(III) anion has been synthesized, characterized structurally and magnetically, and shown to exhibit a three-step cooperative spin-crossover transition. The study reveals unique phenomena during the spin-crossover process, such as unexpected changes in iron(III)-ligand bond lengths and a structural phase transition in the final step. This research provides a new platform for understanding the multistep spin-crossover character in Fe(III) thsa-complexes and related compounds.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Laia Navarro, Jordi Cirera
Summary: This work presents a systematic study on the ligand design in the anionic spin-crossover system and how it can be used to achieve a high degree of tuning of its transition temperature. Different ligand substitutions and functionalizations allow for a large or fine change in the transition temperature.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Emmelyne Cuza, Cle Donacier Mekuimemba, Nathalie Cosquer, Francoise Conan, Sebastien Pillet, Guillaume Chastanet, Smail Triki
Summary: Two new mononuclear Fe(II) polymorphs with the same anionic complex have been synthesized and characterized. While polymorph 2 exhibits a high-spin state throughout the temperature range, complex 1 undergoes a complete spin crossover transition at around 132.3 K.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Inorganic & Nuclear
Sebastien Dhers, Humphrey L. C. Feltham, Sally Brooker
COORDINATION CHEMISTRY REVIEWS
(2015)
Article
Chemistry, Inorganic & Nuclear
Matthew G. Cowan, Reece G. Miller, Sally Brooker
DALTON TRANSACTIONS
(2015)
Article
Chemistry, Inorganic & Nuclear
Reece G. Miller, Suresh Narayanaswamy, Simon M. Clark, Przemslaw Dera, Geoffrey B. Jameson, Jeffery L. Tallon, Sally Brooker
DALTON TRANSACTIONS
(2015)
Article
Chemistry, Inorganic & Nuclear
Reece G. Miller, Sally Brooker
INORGANIC CHEMISTRY
(2015)
Article
Chemistry, Inorganic & Nuclear
Charles Romain, Michael S. Bennington, Andrew J. P. White, Charlotte K. Williams, Sally Brooker
INORGANIC CHEMISTRY
(2015)
Article
Chemistry, Inorganic & Nuclear
Humphrey L. C. Feltham, Chloe Johnson, Anastasia B. S. Elliott, Keith C. Gordon, Martin Albrecht, Sally Brooker
INORGANIC CHEMISTRY
(2015)
Article
Chemistry, Multidisciplinary
Stuart J. Malthus, Rajni K. Wilson, David S. Larsen, Sally Brooker
SUPRAMOLECULAR CHEMISTRY
(2016)
Article
Chemistry, Multidisciplinary
Matthew G. Cowan, Reece G. Miller, Sally Brooker
SUPRAMOLECULAR CHEMISTRY
(2015)
Article
Chemistry, Inorganic & Nuclear
Humphrey L. C. Feltham, Sebastien Dhers, Mathieu Rouzieres, Rodolphe Clerac, Annie K. Powell, Sally Brooker
INORGANIC CHEMISTRY FRONTIERS
(2015)
Article
Chemistry, Multidisciplinary
Arnaud Thevenon, Charles Romain, Michael S. Bennington, Andrew J. P. White, Hannah J. Davidson, Sally Brooker, Charlotte K. Williams
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2016)
Article
Chemistry, Inorganic & Nuclear
Nicholas G. White, Sally Brooker
Article
Chemistry, Multidisciplinary
Rafal Kulmaczewski, Juan Olguin, Jonathan A. Kitchen, Humphrey L. C. Feltham, Guy N. L. Jameson, Jeffery L. Tallon, Sally Brooker
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2014)
Meeting Abstract
Chemistry, Multidisciplinary
Arnaud Thevenon, Charles Romain, Michael Bennington, Hannah Davidson, Andrew White, Sally Brooker, Charlotte Williams
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Meeting Abstract
Chemistry, Multidisciplinary
Arnaud Thevenon, Charles Romain, Michael Bennington, Hannah Davidson, Andrew White, Sally Brooker, Charlotte Williams
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Review
Chemistry, Multidisciplinary
Yikuan Liu, Xiaona Liu, An Su, Chengtao Gong, Shenwei Chen, Liwei Xia, Chengwei Zhang, Xiaohuan Tao, Yue Li, Yonghe Li, Tulai Sun, Mengru Bu, Wei Shao, Jia Zhao, Xiaonian Li, Yongwu Peng, Peng Guo, Yu Han, Yihan Zhu
Summary: Covalent organic frameworks are crystalline porous materials with designable structures and functions, which can acquire multifunctionalities and have versatile applications in gas separation/storage, catalysis, and optoelectronic devices.
CHEMICAL SOCIETY REVIEWS
(2024)
Review
Chemistry, Multidisciplinary
Heyang Zhang, Jo Vandesompele, Kevin Braeckmans, Stefaan C. De Smedt, Katrien Remaut
Summary: Gene therapy has the potential to revolutionize the treatment of inherited and acquired diseases, but its success rate is currently limited. This review focuses on the obstacles faced by gene therapies in the human body, such as nucleic acid degradation by abundant nucleases, and discusses strategies to reduce degradation and methods to assess nucleic acid integrity.
CHEMICAL SOCIETY REVIEWS
(2024)
Review
Chemistry, Multidisciplinary
Chenxi Duan, Chunming Cui
Summary: Low valent group 14 compounds with diazaborolyl substituents exhibit unique structures and reactivity due to the combination of sigma-electron donation and steric hindrance. The modulation of the HOMO-LUMO gap by the diazaborolyl substituents results in novel reaction patterns in the activation of small molecules and inert chemical bonds.
CHEMICAL SOCIETY REVIEWS
(2024)
Review
Chemistry, Multidisciplinary
David E. Salazar Marcano, Nada D. Savic, Kilian Declerck, Shorok A. M. Abdelhameed, Tatjana N. Parac-Vogt
Summary: Metal-oxo clusters have great potential in various fields and can react with biomolecules, making them promising for applications in disease treatment and energy development. They can also be used in the development of inorganic drugs and bioanalytical tools.
CHEMICAL SOCIETY REVIEWS
(2024)
Review
Chemistry, Multidisciplinary
Lana K. Moree, Logan A. V. Faulkner, James D. Crowley
Summary: In this tutorial review, the general methods for synthesizing heterometallic metallosupramolecular architectures (MSAs), specifically heterometallic cages, are examined. The intrinsic properties and potential applications of these cages as host-guest systems and reaction catalysts are discussed.
CHEMICAL SOCIETY REVIEWS
(2024)
