Article
Materials Science, Multidisciplinary
Christina D. Polyzou, Ondrej Malina, Michaela Polaskova, Manoj Tripathi, Alan B. Dalton, John Parthenios, Vassilis Tangoulis
Summary: The study investigates the synthesis of nanoparticles through reverse-micellar synthesis and explores the impact of size and reaction temperature on the nanoparticles in liquid phase exfoliation experiments. The synthesis process is controllable for specific parameters, resulting in nanoparticles with an agglomerated architecture.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Pharmacology & Pharmacy
Roni Sverdlov Arzi, Asaf Kay, Yulia Raychman, Alejandro Sosnik
Summary: Nanoprecipitation and microfluidics technology are effective methods for producing pure drug nanoparticles and optimizing product performance. The use of specific microfluidic devices can lead to the production of rounded, optimized nanoparticles.
Article
Chemistry, Inorganic & Nuclear
Francisco Javier Valverde-Munoz, Rania Kazan, Kamel Boukheddaden, Masaaki Ohba, Jose Antonio Real, Teresa Delgado
Summary: Mastering nanostructuration of functional materials into electronic devices is crucial in materials science, especially for SCO compounds which are sensitive to size reduction. Finding materials with strong cooperative hysteretic SCO properties at the nanoscale near room temperature is challenging. The synthesis and characterization of 20-30 nm surfactant-free nanocrystals of Fe-II Hofmann-type polymer demonstrated the maintenance of thermally induced SCO bistability at such a scale.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Ramon Torres-Cavanillas, Miguel Gavara-Edo, Eugenio Coronado
Summary: The field of spin-crossover complexes is transitioning from studying the spin transition phenomenon to its application in molecular electronics. Processing spin-crossover materials as nanoparticles is a convenient way to maintain the bistability and reduce size. This paper reviews the recent advances in the chemical design of these nanoparticles and their integration into electronic devices, while also focusing on integrating them with 2D materials to improve device endurance and spin state detection.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Jung Yeon Han, Joseph N. La Fiandra, Don L. DeVoe
Summary: This paper presents a microfluidic vortex focusing technique for mass production of liposomes with controlled size and low variability, addressing the trade-offs between size uniformity and mass production in liposome synthesis.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yue Zan, Lionel Salmon, Azzedine Bousseksou
Summary: SCO@SiO2 nanoparticles based on 1,2,4-triazole iron (II) coordination compounds were prepared using a reverse microemulsion technique. The thickness of the silica shell and the morphology of the nanoparticles were studied by adjusting the polar phase/surfactant ratio, TEOS precursor quantity, ammonia quantity, and reaction temperature. The controllable size and silica shell thickness of the nanoparticles open up possibilities for post-synthetic modifications. The evolution of spin crossover properties with morphological changes was investigated through variable temperature optical and magnetic measurements.
Article
Chemistry, Inorganic & Nuclear
Manan Ahmed, Helen E. A. Brand, Vanessa K. Peterson, Jack K. Clegg, Cameron J. Kepert, Jason R. Price, Benjamin J. Powell, Suzanne M. Neville
Summary: In this study, a nitro-functionalised 1,2,4-triazole ligand was used to induce lattice distortion in a 2-D Hofmann framework material through competing supramolecular interactions. The crystallographic analyses revealed substantial deviations from a regular Hofmann structure, showing an array of ligand conformations and Fe-II coordination environments. Temperature-dependent magnetic susceptibility measurements showed a two-step spin crossover transition, providing insight into the competition between elastic interactions and crystallographically driven order.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Sara Maria Giannitelli, Emanuele Limiti, Pamela Mozetic, Filippo Pinelli, Xiaoyu Han, Franca Abbruzzese, Francesco Basoli, Danila Del Rio, Stefano Scialla, Filippo Rossi, Marcella Trombetta, Laura Rosano, Giuseppe Gigli, Zhenyu Jason Zhang, Emanuele Mauri, Alberto Rainer
Summary: This study successfully synthesized nanogels using droplet-based microfluidics, demonstrating precise control over nanoparticle size and morphology, and validated its potential application as a drug delivery system in vitro.
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
Engineering, Chemical
Yingjie Fei, Chunying Zhu, Taotao Fu, Xiqun Gao, Youguang Ma
Summary: The study investigated the breakup flow patterns, neck dynamics and tip dynamics of bubbles stabilized by adsorptive nanoparticles in a microfluidic Y-junction. It found that nanoparticles make bubbles more difficult to breakup, and the breakup process can be divided into squeezing, transition and pinch-off stages. The difference between hardening bubbles and conventional bubbles weakens as the dispersion flow rate increases.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Yanlin Zhang, Yong Wang, Guanshang Du, Chaoquan Hu
Summary: A surfactant-free droplet-based technique for fabricating polymeric microspheres is proposed in this study. The technique utilizes hydrodynamic focusing to generate droplets and employs solvent diffusion to desolvate the droplets. The results highlight the importance of interfacial tension, water flow pattern, and solvent viscosity in determining the characteristics of the microspheres.
MATERIALS TODAY COMMUNICATIONS
(2022)
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, Multidisciplinary
Zilu Wang, Pingzhi Li, Mouad Fattouhi, Yuxuan Yao, Youri L. W. Van Hees, Casper F. Schippers, Xueying Zhang, Reinoud Lavrijsen, Felipe Garcia-Sanchez, Eduardo Martinez, Albert Fert, Weisheng Zhao, Bert Koopmans
Summary: Field-free spin-orbit torque (SOT) switching of perpendicular synthetic antiferromagnets (p-SAFs) is achieved through the introduction of an interlayer with Dzyaloshinskii-Moriya interactions (DMIs). The existence of the DMI interlayer is experimentally confirmed, and deterministic field-free switching is demonstrated. The proposed strategy is compatible with magnetic tunnel junction device structure and provides a method for high-performance SOT devices based on p-SAFs.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Alejandro Enriquez-Cabrera, Livia Getzner, Lionel Salmon, Lucie Routaboul, Azzedine Bousseksou
Summary: The influence of solvent on the post-synthetic modification of the spin crossover complex with [Fe(NH(2)trz)(3)](NO3)(2) and p-anisaldehyde was comprehensively studied. It was found that using a suitable solvent like ethanol led to complete modification, while unsuitable solvents like toluene or 1-octanol resulted in incomplete reactions or undesired species.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Bo Gan, Gang Jiang, Yuqian Huang, Hong Zhang, Qingyang Hu, Youjun Zhang
Summary: In this study, the phase diagram and thermoelastic properties of iron oxyhydroxide (FeOOH) were investigated using high pressure-temperature experiments and theoretical simulations. The results revealed density discontinuity and volume collapse during the spin crossover, which may contribute to seismic heterogeneities in the Earth's mantle.
Article
Chemistry, Inorganic & Nuclear
Thi Thiet Vu, Nathalie Daro, Mathieu Marchivie, Stephane Mornet, Eric Freysz, Guillaume Chastanet
Summary: This paper presents a chemical strategy for obtaining nanoparticles of the RbxMn[Fe(CN)(6)]((x+2)/3)center dot nH(2)O (RbMnFe) Prussian blue analogue in a direct manner, aiming to maintain its switching ability at the nanoscale. The study found that smaller particles had lower rubidium content, potentially affecting the observation of switching properties on very small particles. The results show the potential for creating switchable particles without surfactants, and the importance of this work in processing nanoparticles into devices.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Gael Privault, Jean-Yves Mevellec, Maciej Lorenc, Bernard Humbert, Etienne Janod, Nathalie Daro, Guillaume Chastanet, Alaska Subedi, Eric Collet
Summary: In this article, the authors investigate the vibrational modes in spin-crossover materials by studying the [Fe(phen)(2)(NCS)(2)] crystal. They compare experimental vibrational spectroscopy data with theoretical calculations and discuss the complex nature of vibrational modes in crystals. They also highlight the contribution of low-frequency libration modes to the total entropy difference between the low-spin and high-spin phases.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Physical
Simon Garnier, Kevin Brugemann, Agnieszka Zak, Johnny Vercouillie, Marie Potier-Cartereau, Mathieu Marchivie, Sylvain Routier, Frederic Buron
Summary: The first access to N-1, N-4 disubstituted pyrrolo[2,3-d][1,2,3]triazoles is reported, and aryl groups were introduced at the C-5 and C-6 positions through regioselective electrophilic brominations followed by Suzuki-Miyaura cross coupling reactions.
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, Multidisciplinary
Ugo Serdan, Lucas Robin, Mathieu Marchivie, Mathieu Gonidec, Patrick Rosa, Elen Duverger-Nedellec, Emilie Pouget, Philippe Sainctavit, Marie-Anne Arrio, Amelie Juhin, Andrei Rogalev, Fabrice Wilhelm, Elizabeth A. A. Hillard
Summary: By integrating enantiomers into a conglomerate-forming matrix, we can control the formation of conglomerates. Ni(II) and Fe(II) form molecular alloys with Zn(II), with Ni(II) allowing for higher concentrations compared to Fe(II). Fast-growing precipitates are more likely to form chiral phases, while slow re-crystallizations favor racemic phases.
CHEMISTRY-SWITZERLAND
(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
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, Multidisciplinary
Theerapoom Boonprab, Upeksha Habarakada, Guillaume Chastanet, Phimphaka Harding, David J. Harding
Summary: This study reports a series of three solvates [Fe(naphPren)2]I center dot CH2Cl2 1, [Fe(naphPren)(2)]I center dot CHCl3 2, and [Fe(naphPren)(2)]I center dot acetone 3 with the novel ligand HnaphPren {2-([(2-(propylamino)ethyl]imino)methyl)naphthalen-2-ol}. Magnetic studies reveal that 1 exhibits an abrupt spin-crossover (SCO) at 162 K, while 2 shows a more gradual SCO centered at 172 K. Compound 3 is trapped in the high-spin (HS) state, but irradiation at 980 nm enables access to a hidden low-spin (LS) state via reverse-LIESST. The structures of 1-3 demonstrate that reversible disorder in the propyl group coupled to SCO is present in 1 and 2 but absent in the acetone solvate. Solvent subtly alters the packing, impacting the flexibility of the propyl chain and thereby switching SCO on or off.
Article
Materials Science, Multidisciplinary
Liza El-Khoury, Nathalie Daro, Guillaume Chastanet, Patrick Rosa, Dominique Denux, Laetitia Etienne, Vincent Mazel, Michael Josse, Mathieu Marchivie
Summary: Cool-SPS sintering of spin crossover materials allows for the fabrication of molecular ceramics with high relative density and improved cooperativity.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Narsimhulu Pittala, Emmelyne Cuza, Dawid Pinkowicz, Michal Magott, Mathieu Marchivie, Kamel Boukheddaden, Smail Triki
Summary: A new 1D coordination polymer has been synthesized and characterized. The magnetic and vibrational infrared data analysis reveals the contribution of two Fe-II active centers. Photomagnetic experiment shows that the dehydrated phase exhibits a photomagnetic response.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Raul Diaz-Torres, Theerapoom Boonprab, Silvia Gomez-Coca, Eliseo Ruiz, Guillaume Chastanet, Phimphaka Harding, David J. Harding
Summary: This study explores the alcohol effects in a series of iron(III) spin crossover complexes. The results show that even small changes in the solvent can dramatically influence the crystal packing and therefore the spin crossover properties.
INORGANIC CHEMISTRY FRONTIERS
(2022)
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)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
