Review
Materials Science, Multidisciplinary
Zhongxuan Wang, Wei Qin
Summary: The development of organic ferromagnetic materials has led to the realization of magnetoelectric and optomagnetic couplings, due to the strong couplings among charge, orbit, spin, and phonon in these materials. Understanding these couplings could guide the further development of organic spin optoelectronics.
NPG ASIA MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ryohei Akiyoshi, Hikaru Zenno, Yoshihiro Sekine, Manabu Nakaya, Motoko Akita, Daisuke Kosumi, Leonard F. Lindoy, Shinya Hayami
Summary: This study reports a new type of ME material with liquid crystal, ferroelectric, and field-induced single molecule magnet behaviors. The compound displays distinctive ferroelectric behavior and field-induced slow magnetic relaxation behavior, showing potential for next-generation ME materials development.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Dawid Marcinkowski, Maciej Kubicki, Violetta Patroniak, Tadeusz Muziol, Szymon Chorazy, Le Shi, Mikolaj Zychowicz, Anna M. Majcher-Fitas, Robert Podgajny, Adam Gorczynski
Summary: This study demonstrates for the first time how the triphenylmethane (trityl) group can be used in the field of molecular magnetic materials by shaping the properties of single molecule magnets (SMMs) within lanthanide complexes. Trityl-appended hydrazone ligands were synthesized and complexed with Dy(III) and Er(III) salts to generate monometallic and bimetallic complexes. The magnetic properties of these complexes were investigated, revealing the ability of ligand HL1 to induce SMM behavior in Dy(III) congeners.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ryohei Akiyoshi, Hikaru Zenno, Yoshihiro Sekine, Manabu Nakaya, Motoko Akita, Daisuke Kosumi, Leonard F. Lindoy, Shinya Hayami
Summary: The new ME material displays liquid crystal, ferroelectric, and field-induced single molecule magnet behaviors, with tunable dielectric properties by an external magnetic field. This multifunctional compound represents a starting point for the development of a range of next-generation ME materials.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhilin Guo, Yi-Fei Deng, Zoe Pikramenou, Kim R. Dunbar, Yuan-Zhu Zhang
Summary: Introducing both tetrazine radical and azido bridges afforded two air-stable square complexes where magnetic studies revealed strong antiferromagnetic metal-radical interaction with a coupling constant of -64.7 cm(-1) in the 2J formalism in 2. Remarkably, complex 2 exhibits slow relaxation of magnetization with an effective barrier for spin reverse of 96 K at zero applied field.
INORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Yun-Lan Li, Hai-Ling Wang, Zhong-Hong Zhu, Xing-Lin Lu, Fu-Pei Liang, Hua-Hong Zou
Summary: By connecting magnetic primitives via diamagnetic metal ions, single-molecule magnet behavior based on high-nucleation clusters has been obtained for the first time. The newly synthesized Dy12Na6 is currently the highest nuclear heterometallic single-molecule magnet.
Review
Chemistry, Inorganic & Nuclear
Ji-Tun Chen, Teng-Da Zhou, Wen-Bin Sun
Summary: Lanthanide-based single-molecule magnets (SMMs) have garnered attention due to their potential in quantum information processing, storage, and spintronics. Recent breakthroughs have made them promising for practical applications, although challenges remain in suppressing quantum tunneling of magnetization and integrating them into devices. Multifunctional 4f-based SMMs with optical and electronic properties offer new perspectives for future device applications and understanding of magnetic relaxation behavior.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Matthias Dorn, David Hunger, Christoph Foerster, Robert Naumann, Joris van Slageren, Katja Heinze
Summary: Molecular entities with doublet or triplet ground states are being increasingly studied as potential qubits. Vanadium(II) ions in octahedral ligand fields with quartet ground states are considered as qubits with potential luminescent spin-flip states. Two V2+ complexes, [V(ddpd)(2)](2+), with the strong field ligand N,N'-dimethyl-N,N'-dipyridine-2-yl-pyridine-2,6-diamine (ddpd) in two isomeric forms (cis-fac and mer), were identified as suitable candidates. The energy gaps between the two lowest Kramers doublets allow pulsed EPR experiments at conventional Q-band frequencies. Both isomers have relatively long spin-lattice relaxation times and a phase memory time at low temperatures. Furthermore, the mer isomer shows slow magnetic relaxation in an applied field. The [V(ddpd)(2)](2+) complexes are non-luminescent due to charge transfer admixture to the spin-flip states.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Qin Wang, Li-Ping Yu, Zhi-Qian Zhang, Ling Chen, Shen Zhang, Yu-Peng Hua, Jie Wang, Ying Shi, Wen-Min Wang
Summary: A novel Co-3(II) Co-2(III) cluster was successfully synthesized using a solvothermal method, showing complex structure and magnetic behavior.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Inorganic & Nuclear
Gautier Felix, Alena Kulakova, Saad Sene, Clement Charlot, Alexey N. Bilyachenko, Alexander A. Korlyukov, Alexander D. Volodin, Elena S. Shubina, Ilia G. Elizbarian, Yannick Guari, Joulia Larionova
Summary: We report the synthesis, structures, magnetic, and luminescence properties of a new series of tetranuclear lanthanide-based germsesquioxanes. These compounds exhibit characteristic Ln3+-based emission in solid state at room and liquid nitrogen temperature. The mixed Tb3+/Eu3+ compound works as a self-referenced ratiometric optical thermometer with a maximum relative sensitivity of 0.87% °C-1 achieved at 57.6 degrees C.
Article
Chemistry, Applied
Zhongyi Li, Jiahui Bu, Ran Zhang, Chi Zhang, Dongqing Wu, Bin Zhai
Summary: Two unique two-dimensional Cd(II)-Dy(III) heterometallic coordination polymers were successfully synthesized at different temperatures. Both polymers exhibit 2D layer structures with a dinuclear [Dy2] cluster node and a Dy(III)-based 1D zigzag chain motif. Magnetic studies reveal slow magnetic relaxation behavior with temperature-dependent relaxation peaks for both polymers.
JOURNAL OF RARE EARTHS
(2023)
Article
Materials Science, Multidisciplinary
Kunal Kumar, Guanping Li, Olaf Stefanczyk, Szymon Chorazy, Koji Nakabayashi, Shin-ichi Ohkoshi
Summary: Coordination network-based magnets composed of uncommon Kramers ions (Nd(iii) and Sm(iii)) exhibit emissive properties and may realize diverse magneto-optical applications. The cyanide-bridged robust networks possessing lanthanide ions exhibit tricapped trigonal prism coordination geometry and single-molecule magnet (SMM) properties. The compounds also show visible emissions and SmAu displays the highest relative thermal sensitivity among Sm(iii)-containing SMMs in a 3D framework, making it suitable for thermal sensing applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Kun Fan, Song-Song Bao, Zi-Wen Yu, Xin-Da Huang, Yu-Jie Liu, Mohamedally Kurmoo, Li-Min Zheng
Summary: In this study, three heteronuclear Ir-III-Co-II arrays have been synthesized, where compounds 2 and 3 are discrete ionic complexes and compound 4 consists of a self-assembled two-dimensional coordination polymer. The Co-II cores in all arrays exhibit octahedral geometries with varying degrees of distortion. Additionally, these arrays show slow magnetic relaxation and solid-state phosphorescence, with compound 4 exhibiting severely quenched phosphorescence due to strong connections between the Co center and the metalloligand.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Ramesh Chandra Bhatt, Lin-Xiu Ye, Li-Ren Lin, Ngo Trong Hai, Jong-Ching Wu, Te-ho Wu
Summary: Studied the behavior of magnetic domain propagation and magnetization relaxation in Gd-Fe-Co Hall bar, and found that the stochastic nature and delay in magnetization relaxation can be controlled by sensing currents and Hall bar geometry.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Physics, Multidisciplinary
Bin Xu, Jun Zhang, Wei Zhong, Chi Xiong, Daxing Xiong
Summary: This study investigates the energy relaxation process in one-dimensional lattices with next-nearest-neighbor couplings. The properties of discrete breathers (DBs) are found to be unusual with the inclusion of these couplings. The study identifies two crossovers of relaxation and shows that the final power-law relaxation is influenced by the properties of DBs.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Editorial Material
Materials Science, Ceramics
Kyle Brinkman, Armin Feldhoff, Eva Hemmer, Krista Carlson
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Soham Mukherjee, Sarmad Naim Katea, Emille M. Rodrigues, Carlo. U. Segre, Eva Hemmer, Peter Broqvist, Hakan Rensmo, Gunnar Westin
Summary: Nanocrystalline ZnO sponges doped with EuO1.5 were successfully prepared by heating metal-salt complex based precursor pastes. Phase separation between ZnO and c-Eu2O3 was observed at temperatures above 700 degrees C. The clean oxide made at 600 degrees C showed a slight volume increase compared to undoped ZnO, and the Eu-doping had little effect on the local structure of ZnO.
Article
Materials Science, Multidisciplinary
Wojciech M. Piotrowski, Riccardo Marin, Maja Szymczak, Emma Martin Rodriguez, Dirk H. Ortgies, Paloma Rodriguez-Sevilla, Miroslav D. Dramicanin, Daniel Jaque, Lukasz Marciniak
Summary: Lifetime-based luminescence thermometry enables accurate deep-tissue monitoring of temperature changes, but short lifetimes and poor brightness limit its performance. A solution to these limitations is the design and optimization of luminescent nanothermometers co-doped with transition metal and lanthanide ions, which exhibit strong near-infrared emission and long temperature-dependent photoluminescence lifetime. These nanothermometers, combined with a custom-made instrument, allow for obtaining 2D thermal maps for deep-tissue thermal mapping. This study provides foundations for the deployment of lifetime-based thermometry for accurate deep-tissue temperature monitoring.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tamara Munoz-Ortiz, Idoia Alayeto, Jose Lifante, Dirk H. Ortgies, Riccardo Marin, Emma Martin Rodriguez, Maria del Carmen Iglesias de la Cruz, Gines Lifante-Pedrola, Jorge Rubio-Retama, Daniel Jaque
Summary: Nanothermometry utilizes nanoparticles as thermal probes, enabling remote and minimally invasive sensing. It has emerged as a powerful tool in biomedicine. However, the lack of 3D thermal imaging capability and readily available tools in clinic hinders its translation to the bedside.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
J. Mikko Rautiainen, Maryna Green, Minna Mahonen, Jani O. Moilane, Manu Lahtinen, Arto Valkonen
Summary: Halogen bonding interactions were studied in 15 crystalline 3-iodopyridinium systems. Experimental results showed that halogen bonding acts as a secondary intermolecular force in these charged systems, while still maintaining high directionality of interaction. Computational studies validated the experimental data and showed that halogen bond strengths were exaggerated in smaller model systems, but improved agreement between experimental and calculated structures was seen in larger systems. The strength of halogen bonds was found to come second to electrostatic interactions in stabilizing structures, but played a major role in directing the packing of solid-state structures.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Khouloud Hamraoui, Vivian Andrea Torres-Vera, Irene Zabala Gutierrez, Alejandro Casillas-Rubio, Mohammed Alqudwa Fattouh, Antonio Benayas, Riccardo Marin, Marta Maria Natile, Miguel Manso Silvan, Juan Rubio-Zuazo, Daniel Jaque, Sonia Melle, Oscar G. Calderoin, Jorge Rubio-Retama
Summary: Rare-earth doped nanoparticles (RENPs) have attracted increasing interest in materials science due to their optical, magnetic, and chemical properties. RENPs can emit and absorb radiation in the second biological window (NIR-II, 1000-1400 nm), making them ideal optical probes for in vivo imaging. The optimization of thermal sensitivity in RENPs depends on the core chemical composition and size, active-shell, and outer-inert-shell thicknesses.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Liyan Ming, Irene Zabala-Gutierrez, Paloma Rodriguez-Sevilla, Jorge Rubio Retama, Daniel Jaque, Riccardo Marin, Erving Ximendes
Summary: This article introduces a luminescence lifetime estimation method based on U-NET to improve the estimation accuracy under extremely low signal-to-noise ratio conditions. The effectiveness of U-NET is demonstrated in luminescence lifetime thermometry and its sensing performance improvement is verified through two experiments under extreme measurement conditions.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Carlos D. S. Brites, Riccardo Marin, Markus Suta, Albano N. Carneiro Neto, Erving Ximendes, Daniel Jaque, Luis D. Carlos
Summary: Luminescence (nano)thermometry is a remote sensing technique that utilizes the temperature dependency of luminescence features to measure temperature. It has potential applications in various fields and requires the establishment of a theoretical background, standardized practices, and improved readouts through multiparametric analysis and artificial intelligence algorithms. Challenges in luminescence thermometry and the need for continuous innovation are also discussed.
ADVANCED MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Gabriel Gomes, Marcos L. F. Gomes, Saimon F. Covre da Silva, Ailton Garcia Jr, Armando Rastelli, Odilon D. D. Couto Jr, Angelo Malachias, Christoph Deneke
Summary: This review discusses the influence of the inherently asymmetric strain state of rolled-up III-V heterostructure tubes on light emitters. Whispering gallery mode resonators built from rolled-up III-V heterostructures are briefly reviewed. The curvature and its influence on the diameter of the rolled-up micro- and nanotubes are discussed, as well as the possible strain states. Experimental techniques are essential to accurately determine the strain state for the emitters inside the tube wall.
Article
Materials Science, Multidisciplinary
Liyan Ming, Irene Zabala-Gutierrez, Oscar G. Calderon, Sonia Melle, Erving Ximendes, Jorge Rubio-Retama, Riccardo Marin
Summary: Silver chalcogenide semiconductor nanocrystals (Ag2E SNCs) play an important role in the biomedical field due to their near-infrared excitation and low cytotoxicity. However, their low photoluminescence quantum yield poses a challenge for bioimaging and biosensing applications. This article provides an overview of strategies to improve the brightness of Ag2E SNCs by addressing defects, metallic silver, and composition issues. Future research directions to further enhance the brightness and effectiveness of Ag2E SNCs in biomedical applications are also discussed.
Article
Chemistry, Inorganic & Nuclear
Niki Mavragani, Alexandros A. Kitos, Jakub Hruby, Stephen Hill, Akseli Mansikkamaki, Jani O. Moilanen, Muralee Murugesu
Summary: A new series of radical-bridged dinuclear lanthanide metallocenes were synthesized by combining high-performing lanthanide metallocenes and tetrazine-based radical ligands. The formation of radical species was confirmed by various techniques. The choice of ancillary ligands and the steric effects played a crucial role in promoting stronger magnetic exchange coupling and achieving slow relaxation of the magnetization.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Materials Science, Multidisciplinary
Wojciech M. Piotrowski, Maja Szymczak, Emma Martin Rodriguez, Riccardo Marin, Marta Henklewska, Blazej Pozniak, Miroslav Dramicanin, Lukasz Marciniak
Summary: The increasing popularity of luminescent nanothermometry in recent years is due to its potential application in biomedicine. This study introduces a biocompatible bimodal luminescent thermometer that operates in ratiometric and luminescence lifetime modes, offering high sensitivity and low cytotoxicity, making it suitable for bioapplications.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Chemistry, Multidisciplinary
Nan Liu, Christian Homann, Samuel Morfin, Meghana S. Kesanakurti, Nicholas D. Calvert, Adam J. Shuhendler, Tom Al, Eva Hemmer
Summary: Multimodal bioimaging probes with optical, MRI, and CT capabilities offer promising biomedical applications. Researchers prepared nanoparticles with multimodal capabilities and addressed issues such as UC emission loss and the effect of outer shell thickness on magnetic and CT performance.
Article
Materials Science, Multidisciplinary
Walaa Mohammad, K. David Wegner, Clothilde Comby-Zerbino, Vanessa Trouillet, Marina Paris Ogayar, Jean-luc Coll, Riccardo Marin, Daniel Jaque Garcia, Ute Resch-Genger, Rodolphe Antoine, Xavier Le Guevel
Summary: In this study, ultra-small gold nanoparticles stabilized by co-ligands were synthesized, and their physicochemical properties were controlled by the amount of reducing agent used. The absorption cross-section was significantly increased by precisely controlling the reducing agent, which in turn influenced the photoluminescence quantum yield. The results suggest that the physicochemical properties of the ligand shell can be tuned to control the near-infrared absorption and photoluminescence of the gold nanoparticles.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Marina Paris Ogayar, Diego Mendez-Gonzalez, Irene Zabala Gutierrez, Alvaro Artiga, Jorge Rubio-Retama, Oscar G. Calderon, Sonia Melle, Aida Serrano, Ana Espinosa, Daniel Jaque, Riccardo Marin
Summary: Luminescence nanothermometry is a technique that uses luminescence signals from nanosized materials to remotely and minimally invasively measure temperature. However, in a biomedical context, the reliability of temperature measurement is compromised by bias caused by environmental conditions. This study reveals an unexpected source of bias induced by metal ions, which enhances the emission of Ag2S nanothermometers. These findings highlight the need for caution when using luminescence nanothermometry in complex biological environments.