Article
Chemistry, Multidisciplinary
Sven Johannsen, Sascha Ossinger, Troels Markussen, Felix Tuczek, Manuel Gruber, Richard Berndt
Summary: The behavior of spin crossover compound on a silver surface was investigated, revealing that two molecules in tetramers can switch states by current injection with significantly higher yields compared to other systems. The other two molecules remain unchanged, but can be used as contacts for switching neighboring molecules. A model of tetramer structure was proposed and validated through experiments.
Article
Chemistry, Multidisciplinary
Shun Sakaida, Kazuya Otsubo, Ken-ichi Otake, Shogo Kawaguchi, Mitsuhiko Maesato, Susumu Kitagawa, Hiroshi Kitagawa
Summary: This study reports a surface morphology-induced spin state control in ultrathin films of a spin-crossover material, showing that the surface microstructure of film domains exhibited selectivity to stabilize different spin states.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Vassilis Tangoulis, Christina D. Polyzou, Patroula Gkolfi, Nikolia Lalioti, Ondrej Malina, Michaela Polaskova
Summary: This study discusses the synthesis techniques of 2-D Fe-II SCO particles at the nanometric scale and their impact on magnetic properties, highlighting the importance of size reduction in the context of SCO phenomena.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Ramon Torres-Cavanillas, Marc Morant-Giner, Garin Escorcia-Ariza, Julien Dugay, Josep Canet-Ferrer, Sergio Tatay, Salvador Cardona-Serra, Monica Gimenez-Marques, Marta Galbiati, Alicia Forment-Aliaga, Eugenio Coronado
Summary: This research presents a reversible 'self-strainable' system where strain is generated at the molecular level by introducing spin-crossover nanoparticles onto MoS2 layers, resulting in significant and reversible changes in the electrical and optical properties of the heterostructure.
Article
Chemistry, Physical
Nadejda Bouldi, Matteo Mannini, Marius Retegan, Reece G. Miller, Benjamin Cahier, Philippe Sainctavit, Nathalie Guihery, Talal Mallah, Delphine Cabaret, Diane Gouere, Francois Baudelet, Lucie Nataf, Fabrice Wilhelm, Francois Guillou, Andrei Rogalev, Nicolas Suaud, Sally Brooker, Amelie Juhin
Summary: The spin crossover transition in two molecular Co2+bis-imide compounds, Co(dpzca)2 and Co(pypzca)2, was investigated. While both compounds have similar crystal structures, they exhibit different temperature-dependent magnetic behaviors. The study reveals that Co(pypzca)2 undergoes a reversible pressure-induced SCO transition, while Co(dpzca)2 undergoes a temperature-induced SCO transition. The differences in the SCO transitions are likely due to different intermolecular interactions between the two compounds.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Xiaorong Ren, Xiangyu Zeng, Chunxiang Liu, Chuanfu Cheng, Ruirui Zhang, Yuqin Zhang, Zijun Zhan, Qian Kong, Rui Sun, Chen Cheng
Summary: The optical spin Hall effect (OSHE) of light field from a closed elliptical metallic curvilinear nanoslit is investigated instead of the usual truncated curvilinear nanoslit. By utilizing characteristic bright spots in the light field formed by the noncircular symmetry of the elliptical slit and introducing a method to separate incident spin component and converted spin component, the OSHE manifested in the spot shifts was clearly observable. The slope of the elliptical slit provided a geometric phase gradient, resulting in opposite and double shifts of the characteristic spots in centrosymmetry.
Article
Chemistry, Physical
I Medina, A. Villasenor
Summary: Operational limitations of a multi-channel nano-plasmonic demultiplexer were analyzed using the Drude model in finite-difference time-domain method software. The study found that the maximum number of filter cavities in the proposed filter was 8, and it efficiently filtered 12 different wavelengths in the optical band. The small size and energy-saving capacity of this nano-plasmonic device make it ideal for implementation in satellite communications.
Article
Optics
Min Cheng, Ping Fu, Shengyu Chen
Summary: In this study, the photonic spin Hall effect (PSHE) in bilayer borophene metasurfaces was theoretically investigated. The transmitted beams exhibited giant PSHE shifts, which could be flexibly controlled by adjusting parameters such as the twist angle of metasurface bilayers, incident angle, spacer refractive index, and thickness. The magnitude of PSHE shifts in bilayer borophene metasurfaces was generally on the order of tens to hundreds of wavelengths near the topological transition and even near the epsilon-near-zero (ENZ) regions. By tuning the ribbon width of borophene metasurface or the electron density, the manipulation frequency range of the large PSHE shifts could achieve hundreds of terahertz or even picohertz. The ultrahigh sensitivity of the PSHE shifts to spacer refractive index in bilayer borophene metasurfaces can be utilized for designing high-performance refractive index sensors.
Article
Materials Science, Multidisciplinary
Yuan Tian, M. Shoufie Ukhtary, Riichiro Saito
Summary: The study investigates the time response of optically generated spin current at the graphene edge for potential applications in optospintronic devices. Spin current is generated by optically excited edge plasmon inducing electric field rotation on the graphene plane, leading to magnetization perpendicular to the plane through the inverse Faraday effect.
Article
Physics, Applied
J. Cruddas, G. Ruzzi, B. J. Powell
Summary: A simple two-dimensional model of spin crossover materials leads to the emergence of spin-state smectic phases, which exhibit unique characteristics in terms of breaking rotational symmetry and translational symmetry in one direction only. These smectic phases result in plateaus in the fraction of high-spin metal centers and lines of Bragg peaks in x-ray and neutron scattering structure factors. The ordering of the smectic phases is unidirectional, with residual entropy scaling with the linear dimension of the system, contrasting with spin-state ices and antiferroelastic ordered phases.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Matthew J. Anderson, Florent Perez, Carsten A. Ullrich
Summary: This study investigates collective spin-wave modes in doped paramagnetic graphene with adjustable Zeeman-type band splitting, utilizing time-dependent spin density functional response theory and considering dynamical exchange and correlation effects. The spin wave dispersions and stiffnesses are obtained as functions of doping and spin polarization, with potential for experimental observation discussed.
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
Ning Li, Xiangdong Guo, Xiaoxia Yang, Ruishi Qi, Tianyu Qiao, Yifei Li, Ruochen Shi, Yuehui Li, Kaihui Liu, Zhi Xu, Lei Liu, F. Javier Garcia de Abajo, Qing Dai, En-Ge Wang, Peng Gao
Summary: The study successfully measured and observed phonon polaritons in monolayer hexagonal boron nitride using monochromatic electron energy-loss spectroscopy, revealing highly confined and ultraslow group velocity characteristics. The large momentum compensation provided by electron beams also enabled phonon polariton excitation over the entire Reststrahlen band of multilayer hexagonal boron nitride.
Article
Multidisciplinary Sciences
Zi-Lan Deng, Tan Shi, Alex Krasnok, Xiangping Li, Andrea Alu
Summary: Experimental demonstration shows that electromagnetic skyrmions based on magnetic localized spoof plasmons exhibit high topological robustness, paving the way for the development of flexible sensors, wearable electronics, and ultra-compact antennas. These skyrmions maintain stability on materials of different shapes, demonstrating flexible texture characteristics.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Y. Zhou, M. Y. Dai, M. D. Zhao, C. Q. Shao, M. N. Chen, F. Z. Shu
Summary: This paper investigates monolayer tungsten ditelluride as a material that supports elliptic and hyperbolic plasmonic responses, exploring the dispersion relations of plasmonic modes through calculations of permittivities and in-plane conductivities. The study finds that doping can change the topological structure of plasmonic responses, providing a detailed analysis of monolayer WTe2.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Chemistry, Physical
Naixin Kang, Xiaorong Wei, Ruofan Shen, Baojun Li, Eduardo Guisasola Cal, Sergio Moya, Lionel Salmon, Changlong Wang, Emerson Coy, Murielle Berlande, Jean-Luc Pozzo, Didier Astruc
Summary: This study reports the efficient performance of AuNi@ZIF-8 alloys as nanocatalysts for H2 evolution from ammonia borane hydrolysis under visible-light illumination. The catalytic activity of AuNi@ZIF-8 alloys under visible light was found to be 3.4 times higher than that of the monometallic Ni catalyst in the dark. This improvement is attributed to the superior support of ZIF-8 in Au0.5Ni0.5@ZIF-8 and the localized surface plasmon resonance induced between 450 and 620 nm. The results also reveal that the activation of water is always the rate-determining step.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Melvyn Gorra, Frantz Ndebulia Watchou, Maria A. Palacios, Jerome Long, Saad Sene, Gautier Felix, Nathalie Tanchoux, Francoise Quignard, Joulia Larionova, Yannick Guari
Summary: We present the design of novel composite films consisting of cyano-bridged coordination polymers Fe-II[Fe-II(CN)(5)(NO)] or Ag-2(I)[Fe-II(CN)(5)(NO)] grown into a chitosan matrix, which exhibit a slow release of NO radicals under white light irradiation. The characterisation methods confirm that these composites comprise of approximately 50 wt% cyano-bridged coordination polymer microcrystalline particles embedded in chitosan films. Irradiation with white light for 7 days results in a NO radical delivery of 6.5% and 10.6% for {Fe[Fe(CN)(5)(NO)]}(0.55)@C6H11NO4 and {Ag-2[Fe(CN)(5)(NO)]}(0.28)@C6H11NO4, respectively. The rearrangement of cyano-bridged coordination compounds after the departure of NO leads to the formation of Prussian blue or silver Prussian blue analogues, effectively preventing the undesired release of cyanide as a side effect.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Naixin Kang, Ruofan Shen, Baojun Li, Fangyu Fu, Bruno Espuche, Sergio Moya, Lionel Salmon, Jean-Luc Pozzo, Didier Astruc
Summary: The synthesized AuPd@ZIF-8-alloyed nanoparticles serve as an excellent nanocatalyst for the methanolysis reaction of aminoborane under visible light irradiation, producing H-2 at a high rate. The visible-light-induced acceleration is attributed to the Au plasmonic excitation provoking hot electron transfer from Au to Pd-substrate ensemble.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Nanoscience & Nanotechnology
Yue Liu, Fangyu Fu, Lionel Salmon, Bruno Espuche, Sergio Moya, Murielle Berlande, Jean-Luc Pozzo, Jean-Rene Hamon, Didier Astruc
Summary: A new type of catalyst support, involving the addition of metal ion precursors to core-shell ZIF-8@ZIF-67, was proposed and its performance exceeded that of nanocatalysts in ZIF-8 or ZIF-67. Under visible-light illumination, the optimized nanocatalysts achieved a turnover frequency of 430 h-1 for selective formic acid dehydrogenation. The superiority of ZIF-8@Pd2Ag1@ZIF-67 over other catalysts was confirmed in the benchmarking model of 4nitrophenol reduction, indicating the interest in this novel catalyst design.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Seyed Ehsan Alavi, Baptiste Martin, Yue Zan, Xinyu Yang, Mario Piedrahita-Bello, William Nicolazzi, Jean-Francois Ganghoffer, Lionel Salmon, Gabor Molnar, Azzedine Bousseksou
Summary: This study investigates the interplay between the thermomechanical and spin-crossover properties of stimuli-responsive polymer composites containing [Fe(NH2trz)3]SO4 and [Fe(Htrz)(trz)2]BF4 particles embedded in thermoplastic polyurethane and P(VDF-TrFE) matrices. The composites exhibit characteristic elastic softening and increased mechanical damping around the spin transition temperature, resulting from the significant spin state-volume strain coupling in the particles. The transformation strain and stress in the composites significantly increase and decrease, respectively, in soft matrices, as explained by micromechanical simulations. These findings offer a fundamental understanding and quantitative guidelines for the design of spin-crossover polymer composites for mechanical transducer applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Damian Paliwoda, Laure Vendier, Livia Getzner, Frederico Alabarse, Davide Comboni, Baptiste Martin, Seyed Ehsan Alavi, Mario Piedrahita Bello, Lionel Salmon, William Nicolazzi, Gabor Molnar, Azzedine Bousseksou
Summary: Two benchmark Fe(II)-triazole spin-crossover compounds, [Fe(Htrz)2trz]BF4 (1) and [Fe(NH2trz)3]SO4 (2), were investigated using various techniques to evaluate their transformation strain, compressibility, and anisotropy. Elastic softening and mechanical damping were observed during the spin-crossover process in both compounds, suggesting a coupling between spin state and lattice strain. The elastic potential energy, stored elastic work, and frictional work were assessed, providing important insights for understanding the behavior of this compound family and guiding their technological applications.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Biochemistry & Molecular Biology
Maxime Roger, Yann Bretonniere, Yann Trolez, Antoine Vacher, Imane Arbouch, Jerome Cornil, Gautier Felix, Julien De Winter, Sebastien Richeter, Sebastien Clement, Philippe Gerbier
Summary: This article describes three new tetraphenylethene (TPE) push-pull chromophores with strong intramolecular charge transfer. The compounds were synthesized through [2 + 2] cycloaddition-retroelectrocyclization (CA-RE) click reactions using electron-deficient alkenes and an electron-rich alkyne-tetrafunctionalized TPE. Only the starting TPE-alkyne showed significant aggregation-induced emission (AIE) behavior, while the other compounds did not exhibit fluorescence. The UV-Visible absorption spectra showed a red-shift, especially for TPE-F-4-TCNQ. Photothermal studies revealed promising properties for TPE-TCNQ and TPE-F4-TCNQ in the solid state, with TPE-F4-TCNQ showing excellent performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
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
Crystallography
Valerii Y. Sirenko, Dina D. Naumova, Irina A. Golenya, Sergiu Shova, Il'ya A. Gural'skiy
Summary: The crystal structure of a new salt compound is described, in which hydrogen bonding and π···Br interactions exist between the organic cations and polybromide anions, resulting in the formation of a complex supramolecular network.
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
(2023)
Article
Automation & Control Systems
Yue Zan, Mario Piedrahita-Bello, Seyed E. Alavi, Gabor Molnar, Bertrand Tondu, Lionel Salmon, Azzedine Bousseksou
Summary: The paper presents a bilayer bending cantilever actuator made of thermoplastic polyurethane (TPU) with embedded [Fe(NH(2)trz)(3)](SO4) molecular spin-crossover (SCO) particles. The actuator is capable of converting electrothermal input into mechanical response, and exhibits a curvature change of 0.11 mm^-1, a free transformation strain of 1.6%, and an effective work density of 1.25 mJ cm^-3. The actuator also demonstrates a fast response time and robustness in closed-loop experiments.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Chemistry, Inorganic & Nuclear
Valerii Y. Sirenko, Olesia I. Kucheriv, Igor O. Fritsky, Elzbieta Gumienna-Kontecka, Ioan-Andrei Dascalu, Sergiu Shova, Il'ya A. Gural'skiy
Summary: A new type of low-dimensional lead halide hybrid perovskites incorporating chiral organic cations has been synthesized and studied. The results show the potential of these compounds for applications in optoelectronic devices. The role of the chiral organic cations in providing the binding between the organic and inorganic parts of the perovskites has been revealed, and the compounds exhibit low-temperature broadband photoluminescence.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xinyu Yang, Alejandro Enriquez-Cabrera, Dorian Toha, Yannick Coppel, Lionel Salmon, Azzedine Bousseksou
Summary: A pure mixed-anion Fe(NH(2)trz)(3)(BF4)(SiF6)(0.5) spin crossover complex is obtained through a solid-liquid post synthetic modification approach from the Fe(NH(2)trz)(3)(BF4)(2) parent complex. Highly crystalline powder samples incorporating homogeneous micrometric (1 & mu;m long) rod-shaped particles can be achieved using this method. This compound exhibits an abrupt spin crossover behavior with a narrow (10 K) hysteresis loop centered just above room temperature (320 K), making it highly interesting for integration into various application devices.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Oleksandr A. Semenikhin, Olesia I. Kucheriv, Liviu Sacarescu, Sergiu Shova, Il'ya A. Gural'skiy
Summary: By using the antisolvent precipitation technique and stabilization with a cationic surfactant, we successfully synthesized luminescent quantum dots with tunable properties. This work demonstrates the potential of aziridinium-based materials for the fabrication of advanced photonic nanostructures.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Olesia I. Kucheriv, Valerii Y. Sirenko, Hanna R. Petrosova, Vadim A. Pavlenko, Sergiu Shova, Il'ya A. Gural'skiy
Summary: 3D hybrid organic-inorganic halide perovskites, especially lead-based ones, have attracted significant attention due to their excellent physical properties and potential applications in photovoltaics and light-emitting diodes. This paper presents the synthesis and characterization of new 3D tin-based perovskites with an aziridinium cation, which exhibit temperature-induced crystallographic phase transitions. The compounds demonstrate semiconductor characteristics with tunable optical band gaps, making them potential candidates for solar cells and light-emitting diodes. The discovery of these lead-free perovskites expands the range of suitable materials in these applications.
INORGANIC CHEMISTRY FRONTIERS
(2023)
