Article
Chemistry, Multidisciplinary
Lucia Pineiro-Lopez, Francisco-Javier Valverde-Munoz, Elzbieta Trzop, M. Carmen Munoz, Maksym Seredyuk, Javier Castells-Gil, Ivan da Silva, Carlos Marti-Gastaldo, Eric Collet, Jose Antonio Real
Summary: The coordination polymer exhibits a binary reversible switch between low-temperature multi-step spin crossover, featuring a unique magnetic behavior with interpenetrated and coexisting structures.
Article
Chemistry, Physical
Lijun Zhang, Karl Ridier, Oleksandr Ye. Horniichuk, Steïphane Calvez, Lionel Salmon, Gaïbor Molnar, Azzedine Bousseksou
Summary: The formation of hybrid light-matter states, which allows control of quantum-mechanical states and manipulation of molecular materials, has been observed in switchable strong light-matter coupling involving bistable spin-crossover molecules. The thermally induced switching between low-spin and high-spin states of these molecules enables fine control of the light-matter hybridization strength, offering the possibility of reversible switching between ultrastrong- and weak-coupling regimes within a single photonic structure. This work demonstrates the potential of spin-crossover molecular compounds in the development of tunable polaritonic devices and polaritonic chemistry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Veronica Jornet-Molla, Carlos Gimenez-Saiz, Dmitry S. Yufit, Judith A. K. Howard, Francisco M. Romero
Summary: The spin crossover salt [Fe(bpp)(2)](isonicNO)(2). 2.4 H2O undergoes a very abrupt spin crossover at 274.4 K, with reversible response to light irradiation or temperature change; Isotopic effects in the thermomagnetic behavior highlight the significance of hydrogen bonds in determining the magnetic state; The compound can be reversibly dehydrated to produce 1, which also exhibits spin crossover coupled with H-bond isomerization, resulting in strong kinetic effects in the thermomagnetic properties.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Long-Fei Wang, Bang-Heng Lv, Feng-Tai Wu, Guo-Zhang Huang, Ze-Yu Ruan, Yan-Cong Chen, Min Liu, Zhao-Ping Ni, Ming-Liang Tong
Summary: This study demonstrates the reversible on-off switching of spin-crossover (SCO) properties using solid state photochemical [2+2] reaction for the first time. Through UV-induced or thermal methods, the spin-crossover behavior can be controlled in specific 2D or 3D coordination polymers, showing potential applications in molecular switches and data storage.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Liang Zhao, Yin-Shan Meng, Qiang Liu, Osamu Sato, Quan Shi, Hiroki Oshio, Tao Liu
Summary: The study reports a magnetic bistable material consisting of specific compounds that can undergo multiple magnetic states transitions induced by light, showing behaviors of single-chain magnets and single-molecule magnets.
Review
Chemistry, Multidisciplinary
Kuppusamy Senthil Kumar, Mario Ruben
Summary: This review covers the advances in vacuum-sublimable SCO complexes, including the design and synthesis of functional SCO complexes, on-surface SCO of thin films, and various device architectures based on sublimable SCO complexes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Nanoscience & Nanotechnology
Yang-Hui Luo, Xue-Ting Jin, Shu-Xin Zhang, Cheng Xue, Min Liu
Summary: In this study, the reversible spin-state switching (SSS) mediated by the aggregation state of a near-infrared (NIR)-sensitive ferrous complex is demonstrated. The results show that the addition of water and NIR irradiation can achieve reversible switching of molecular switches under ambient conditions, which is of significant importance for the development of novel smart molecular switches at the device level.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Yu-Chen Sun, Feng-Li Chen, Kang-Jie Wang, Yue Zhao, Hai-Yan Wei, Xin-Yi Wang
Summary: This study reports two new mononuclear cobalt(II) complexes with hysteretic spin crossover at relatively high temperatures. Structural and magnetic characterization reveals the presence of hysteresis loops in both compounds. The stability of single crystals at high temperatures allows for structure determination and reveals that the hysteretic spin crossover transitions originate from crystallographic phase transitions involving the dangling -CH2OH groups in the ligand.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Jiajia Li, Xiao-Peng Sun, Shiqi Bi, Minglu Xu, Siyu Jia, Zheng Tang, Pengtao Ma, Jingping Wang, Jun Tao, Jingyang Niu
Summary: This study successfully integrated polyoxometalate (POM) anions into the Fe(II) spin crossover (SCO) system and found that POM anions play an effective role in regulating spin-state switching properties.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Philipp Stegmann, Alex Gee, Neil T. Kemp, Juergen Koenig
Summary: The study reveals that the two spin-crossover molecules are coupled in a nanojunction device and their interaction is described through statistical analysis and parameter extraction. The time dependence of factorial cumulants is used to analyze the impact of interactions between the two spin-crossover molecules on the switching dynamics.
Article
Materials Science, Multidisciplinary
N. Kazak, M. S. Platunov, Yu Knyazev, M. S. Molokeev, M. Gorev, S. G. Ovchinnikov, Z. Pchelkina, V. V. Gapontsev, S. Streltsov, J. Bartolome, A. Arauzo, V. V. Yumashev, S. Yu Gavrilkin, F. Wilhelm, A. Rogalev
Summary: In this study, the spin and oxidation states of Co in Co3BO5 were investigated using XMCD and magnetic susceptibility measurements. Results show that at low temperatures, Co2+ ions are in the HS state while Co3+ ions are in the LS state. The crystal structure shows anomalies at high temperatures.
Article
Chemistry, Physical
Yang-Hui Luo, Hui Dong, Shu-Hua Ma, Feng-Lian Zeng, Xue-Ting Jin, Min Liu
Summary: By confining spin-crossover material into a sponge, reversible spin-state switching in the solid state under ambient conditions is achieved through laser irradiation and shutting off. Moreover, the integration of hygroscopic material enables the sponge to undergo reversible spin-state switching triggered by atmospheric humidity, accompanied by color variation. This research is expected to provide a promising strategy for developing molecular switches triggered by natural energy sources at the device level.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Zhi Li, Rui Wang, Yunpeng Li, Yingjie Li, Chaoqi Ma, Jiawei Yang, Hongxiang Li
Summary: The charge transport of 1,4,5,8-naphthalene diimide (NDI)-based molecules is reversibly tuned by bias voltage and solvent, providing potential for the development of functional molecular devices.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Ravi Yadav, Xiaofei Sun, Ralf Koeppe, Michael T. Gamer, Florian Weigend, Peter W. Roesky
Summary: This study reports a stimuli-responsive low-valent silicon compound exhibiting a new phenomenon of electromerism in silicon chemistry, and the reaction is fully reversible.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Sven Johannsen, Sascha Schueddekopf, Sascha Ossinger, Jan Grunwald, Felix Tuczek, Manuel Gruber, Richard Berndt
Summary: Investigations were conducted on isolated tetramers of the spin crossover compound Fe(H2B-(pyrazole)(pyridylpyrazole))2on Ag(111) at cryogenic temperature using a scanning tunneling microscope (STM) in ultrahigh vacuum. Besides the spin states resulting from electron-induced spin crossover, a third state with distinct current-voltage characteristics and intramolecular image contrast was discovered. This state remains stable within a certain voltage range but decays into the low- and high-spin states of the Fe complex beyond that range. The researchers propose that this state corresponds to a negatively charged Fe complex in its high-spin state, which shares the same number of electrons with the analogous Co compound.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Chemistry, Inorganic & Nuclear
Juan Olguin
COORDINATION CHEMISTRY REVIEWS
(2020)
Article
Chemistry, Inorganic & Nuclear
Diego Plaza-Lozano, Daniel Morales-Martinez, Felipe J. Gonzalez, Juan Olguin
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2020)
Article
Materials Science, Multidisciplinary
Islah-U-din, Shen Chong, Geoffrey B. Jameson, Sebastiampillai G. Raymond, Geunsik Lee, In K. Park, Xiaolin Wang, Mark R. Waterland, Jeffery L. Tallon
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2020)
Article
Multidisciplinary Sciences
Jeffery L. Tallon, John W. Loram
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Inorganic & Nuclear
Diego Plaza-Lozano, Agustin Conde-Gallardo, Juan Olguin
Summary: The study investigated the effect of chelate ring size on the magnetic properties of thioether-based iron(II) metal complexes by synthesizing and characterizing two types of ligands. The results showed that the complexes were isolated in the high spin state, with orbital contribution to g and zero field splitting. The analysis of structural and electronic parameters helped rationalize the differing magnetic properties of the metal complexes.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Jeffery L. Tallon
PHYSICAL REVIEW LETTERS
(2023)
Article
Polymer Science
Sajith Kaniyadan Baiju, Brent James Martin, Rayleen Fredericks, Harikrishnan Raghavan, Karnika De Silva, Matthew Greig Cowan
Summary: This research tests the efficacy of phosphonium ion gels in preventing biofouling and examines the impact of hydrophobicity and biocide concentration on anti-fouling performance. The study finds that formulations with higher hydrophobicity exhibit better anti-fouling performance, while the presence of copper(II) biocide negatively affects it. Furthermore, no correlation is observed between antimicrobial activity and anti-fouling performance.
Article
Materials Science, Multidisciplinary
Jeffery L. Tallon, James G. Storey
Summary: Two recent papers investigate the concept of pairons as a model for the pseudogap in cuprate high-Tc superconductors. The authors calculate the electronic specific heat and static magnetic susceptibility based on this model. However, the measured specific heat contradicts the pairon model by showing that the entropy never recovers to the highest temperature investigated. Additionally, the broad peak in the specific heat coefficient above Tc in certain cuprate materials is attributed to the nearby van Hove singularity rather than pairon unbinding.
Article
Chemistry, Multidisciplinary
Diego Plaza-Lozano, David Ramirez-Palma, Alberto Vela, Juan Olguin
Summary: In this study, two different types of heterocycles embedded with thione functional group were synthesized, and the effect of these thione-containing ligands on the magnetic properties of iron(II) octahedral complexes was investigated. The results showed that the structure and electronic parameters of the thione ligands play a crucial role in determining the magnetic properties of the metal complexes.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Xinyou Liu, Wei Zhang, Kwing To Lai, K. Moriyama, J. L. Tallon, K. Yoshimura, Swee K. Goh
Summary: (CaxSr1-x)(3)Rh4Sn13 is a rare system that shows an interesting interplay between structural quantum criticality and superconductivity. By studying the critical current density, it has been found that the critical current density at zero temperature is significantly enhanced near the structural quantum critical point.
Article
Materials Science, Multidisciplinary
Savannah Egerton, Claudia Sim, Heon E. Park, Mark P. Staiger, Komal M. Patil, Matthew G. Cowan
Summary: Tuning the coefficients of thermal expansion is crucial for controlling performance and prolonging the lifespan of precision equipment. This study introduces a strategy of creating 3-component composite materials to achieve this goal. The composite materials exhibit a significantly larger reduction in thermal expansion coefficient compared to other fillers, while maintaining a Young's modulus comparable to low density polyethylene. This three-component design strategy shows promise for the development of thermoplastic materials with controlled coefficients of thermal expansion.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Ahmed H. Elashkar, Gavin S. Hedley, Omid T. Qazvini, Shane G. Telfer, Matthew G. Cowan
Summary: The publication discusses the research progress in the field of gas adsorption and separation for porous solids over the past 20 years, pointing out the lack of a unified resource for comparing and analyzing material properties. It also introduces a new visualization method of upper and lower bounds for gas separation adsorbents in the material design process.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Jeffery L. Tallon, James G. Storey, John R. Cooper, John W. Loram
Article
Materials Science, Multidisciplinary
Amit Keren, Wayne Crump, Ben P. P. Mallett, Shen Chong, Itai Keren, Hubertus Luetkens, Jeffery L. Tallon
Article
Materials Science, Multidisciplinary
Silvia Muellner, Wayne Crump, Dirk Wulferding, Benjamin P. P. Mallett, Peter Lemmens, Amit Keren, Jeffery L. Tallon
