0000000000225602
AUTHOR
Bruno J. C. Vieira
Iron(ii) complexes of tris(2-pyridylmethyl)amine (TPMA) and neutral bidentate ligands showing thermal- and photo-induced spin crossover
Three new mononuclear Fe(ii) complexes have been prepared and characterized by the combination of tetradentate tris(2-pyridylmethyl)amine (TPMA) with three neutral bidentate ligands, such as ethylenediamine (en), 1,2-diaminopropane (pn) and 2-picolylamine (2-pic), in compounds [FeII(TPMA)(en)](ClO4)2 (1), [FeII(TPMA)(2-pic)](ClO4)2 (2) and [FeII(TPMA)(pn)](ClO4)2 (3). Structural and magnetic characterization demonstrates that the three compounds present a complete SCO behavior. The absence of strong intermolecular interactions and solvent molecules leads to reversible and gradual spin transitions. The different ligands allow tuning T1/2 from 130 K (2) to 325 K (3). The compound with the low…
Isoreticular two-dimensional magnetic coordination polymers prepared through pre-synthetic ligand functionalization
Chemical functionalization is a powerful approach to tailor the physical and chemical properties of two-dimensional (2D) materials, increase their processability and stability, tune their functionalities and, even, create new 2D materials. This is typically achieved through post-synthetic functionalization by anchoring molecules on the surface of an exfoliated 2D crystal, but it inevitably alters the long-range structural order of the material. Here we present a pre-synthetic approach that allows the isolation of crystalline, robust and magnetic functionalized monolayers of coordination polymers. A series of five isostructural layered magnetic coordination polymers based on Fe(ii) centres a…
Cover Feature: Fundamental Insights into the Covalent Silane Functionalization of NiFe Layered Double Hydroxides (Chem. Eur. J. 29/2020)
A highly stable and hierarchical tetrathiafulvalene-based metal organic framework with improved performance as a solid catalyst
[EN] Herein we report the synthesis of a tetrathiafulvalene (TTF)-based MOF, namely MUV-2, which shows a non-interpenetrated hierarchical crystal structure with mesoporous one-dimensional channels of ca. 3 nm and orthogonal microporous channels of ca. 1 nm. This highly stable MOF (aqueous solution with pH values ranging from 2 to 11 and different organic solvents), which possesses the well-known [Fe3(¿3-O)(COO)6] secondary building unit, has proven to be an efficient catalyst for the aerobic oxidation of dibenzothiophenes.
Exploiting the Redox Activity of MIL-100(Fe) Carrier Enables Prolonged Carvacrol Antimicrobial Activity
The design of efficient food contact materials that maintain optimal levels of food safety is of paramount relevance to reduce the increasing number of foodborne illnesses. In this work, we develop a smart composite metal-organic framework (MOF)-based material that fosters a unique prolonged antibacterial activity. The composite is obtained by entrapping a natural food preserving molecule, carvacrol, into a mesoporous MIL-100(Fe) material following a direct and biocompatible impregnation method, and obtaining particularly high payloads. By exploiting the intrinsic redox nature of the MIL-100(Fe) material, it is possible to achieve a prolonged activity against Escherichia coli and Listeria i…
Redox and guest tunable spin-crossover properties in a polymeric polyoxometalate
A bifunctionalized polyoxometalate (POM), [V6O19(C16H15N6O)2]2−, which contains a redox active hexavanadate moiety covalently linked to two tridentate 2,6-bis(pyrazol-1-yl)pyridine (1-bpp) ligands, has been prepared and characterized. Reaction of this hybrid molecule with Fe(II) or Zn(II) ions produces crystalline neutral 1D networks of formula Fe[V6O19(C16H15N6O)2]·solv (2) and Zn[V6O19(C16H15N6O)2]·solv (3) (solv = solvent molecules). Magnetic properties of 2 show an abrupt spin-crossover (SCO) with the temperature, which can be induced by light irradiation at 10 K (Light-Induced Excited Spin-State Trapping, LIESST effect). Interestingly, this porous and flexible structure enables reversi…
Temperature dependence of desolvation effects in hydrogen-bonded spin crossover complexes
The synthesis, crystal structure and (photo)magnetic properties of the anhydrous spin crossover salt of formula [Fe(bpp)2](C6H8O4) (1) (bpp = 2,6-bis(pyrazol-3-yl)pyridine; C6H8O4 = adipate dianion), obtained by desolvation at 400 K of the original tetrahydrate in a single-crystal-to-single-crystal (SC–SC) transformation, are reported. This work offers a comparison between this compound and the previously reported hydrated material ([Fe(bpp)2](C6H8O4)·4H2O, 1·4H2O), highlighting the significance of the thermal conditions used in the dehydration-rehydration processes. In both compounds, a hydrogen-bonded network between iron(II) complexes and adipate anions is observed. The original tetrahyd…
Fundamental Insights into the Covalent Silane Functionalization of NiFe Layered Double Hydroxides
Layered double hydroxides (LDHs) are a class of 2D anionic materials exhibiting wide chemical versatility and promising applications in different fields, ranging from catalysis to energy storage and conversion. However, the covalent chemistry of this kind of 2D materials is still barely explored. Herein, the covalent functionalization with silanes of a magnetic NiFe-LDH is reported. The synthetic route consists of a topochemical approach followed by anion exchange reaction with surfactant molecules prior to covalent functionalization with the (3-aminopropyl)triethoxysilane (APTES) molecules. The functionalized NiFe-APTES was fully characterized by X-ray diffraction, infrared spectroscopy, e…
Ultramicroporous iron-isonicotinate MOFs combining size-exclusion kinetics and thermodynamics for efficient CO2/N2 gas separation
Two ultramicroporous 2D and 3D iron-based Metal-Organic Frameworks (MOFs) have been obtained by solvothermal synthesis using different ratios and concentrations of precursors. Their reduced pore space decorated with pendant pyridine from tangling isonicotinic ligands enables the combination of size-exclusion kinetic gas separation, due to their small pores, with thermodynamic separation, resulting from the interaction of the linker with CO2 molecules. This combined separation results in efficient materials for dynamic breakthrough gas separation with virtually infinite CO2/N2 selectivity in a wide operando range and with complete renewability at room temperature and ambient pressure.
Exploiting redox activity of MIL-100(Fe) carrier enables carvacrol prolonged antimicrobial activity
The design of efficient food contact materials that maintain optimal levels of food safety is of paramount relevance to reduce the increasing foodborne illnesses. In this work, we develop a smart composite MOF-based material that fosters a unique prolonged antibacterial activity. The composite is obtained by entrapping a natural preserving food molecule, carvacrol, into the mesoporous MIL-100(Fe) material following a direct and biocompatible impregnation method and obtaining particularly high payloads. By exploiting the intrinsic redox nature of MIL-100(Fe) material it is possible to achieve a prolonged activity against E. coli bacteria due to a triggered two-step carvacrol release of films…
CCDC 1579606: Experimental Crystal Structure Determination
Related Article: Manuel Souto, Andrea Santiago-Portillo, Miguel Palomino, Iñigo J. Vitórica-Yrezábal, Bruno J. C. Vieira, João C. Waerenborgh, Susana Valencia, Sergio Navalón, Fernando Rey, Hermenegildo García, Guillermo Mínguez Espallargas|2018|Chemical Science|9|2413|doi:10.1039/C7SC04829G
CCDC 1828115: Experimental Crystal Structure Determination
Related Article: Víctor García-López, João C. Waerenborgh, Bruno J. C. Vieira, Miguel Clemente-León, Eugenio Coronado|2018|Dalton Trans.|47|9156|doi:10.1039/C8DT01425F
CCDC 1828114: Experimental Crystal Structure Determination
Related Article: Víctor García-López, João C. Waerenborgh, Bruno J. C. Vieira, Miguel Clemente-León, Eugenio Coronado|2018|Dalton Trans.|47|9156|doi:10.1039/C8DT01425F
CCDC 1828117: Experimental Crystal Structure Determination
Related Article: Víctor García-López, João C. Waerenborgh, Bruno J. C. Vieira, Miguel Clemente-León, Eugenio Coronado|2018|Dalton Trans.|47|9156|doi:10.1039/C8DT01425F
CCDC 1828116: Experimental Crystal Structure Determination
Related Article: Víctor García-López, João C. Waerenborgh, Bruno J. C. Vieira, Miguel Clemente-León, Eugenio Coronado|2018|Dalton Trans.|47|9156|doi:10.1039/C8DT01425F
CCDC 2217201: Experimental Crystal Structure Determination
Related Article: Isabel Abánades Lázaro, Eleni C. Mazarakioti, Eduardo Andres-Garcia, Bruno J. C. Vieira, João C. Waerenborgh, Iñigo J. Vitórica-Yrezábal, Mónica Giménez-Marqués, Guillermo Mínguez Espallargas|2023|J.Mater.Chem.A|11|5320|doi:10.1039/D2TA08934C
CCDC 2213981: Experimental Crystal Structure Determination
Related Article: Mario Palacios-Corella, Víctor García-López, Joao Carlos Waerenborgh, Bruno J. C. Vieira, Guillermo Mínguez Espallargas, Miguel Clemente-León, Eugenio Coronado|2023|Chemical Science|14|3048|doi:10.1039/D2SC05800F
CCDC 1507864: Experimental Crystal Structure Determination
Related Article: Verónica Jornet-Mollá, Carlos Giménez-Saiz, Bruno J. C. Vieira, João C. Waerenborgh, Francisco M. Romero|2021|Dalton Trans.|50|2536|doi:10.1039/D0DT03986A
CCDC 1828113: Experimental Crystal Structure Determination
Related Article: Víctor García-López, João C. Waerenborgh, Bruno J. C. Vieira, Miguel Clemente-León, Eugenio Coronado|2018|Dalton Trans.|47|9156|doi:10.1039/C8DT01425F
CCDC 2213982: Experimental Crystal Structure Determination
Related Article: Mario Palacios-Corella, Víctor García-López, Joao Carlos Waerenborgh, Bruno J. C. Vieira, Guillermo Mínguez Espallargas, Miguel Clemente-León, Eugenio Coronado|2023|Chemical Science|14|3048|doi:10.1039/D2SC05800F
CCDC 2217199: Experimental Crystal Structure Determination
Related Article: Isabel Abánades Lázaro, Eleni C. Mazarakioti, Eduardo Andres-Garcia, Bruno J. C. Vieira, João C. Waerenborgh, Iñigo J. Vitórica-Yrezábal, Mónica Giménez-Marqués, Guillermo Mínguez Espallargas|2023|J.Mater.Chem.A|11|5320|doi:10.1039/D2TA08934C
CCDC 2213983: Experimental Crystal Structure Determination
Related Article: Mario Palacios-Corella, Víctor García-López, Joao Carlos Waerenborgh, Bruno J. C. Vieira, Guillermo Mínguez Espallargas, Miguel Clemente-León, Eugenio Coronado|2023|Chemical Science|14|3048|doi:10.1039/D2SC05800F
CCDC 1819792: Experimental Crystal Structure Determination
Related Article: Verónica Jornet-Mollá, Carlos Giménez-Saiz, Bruno J. C. Vieira, João C. Waerenborgh, Francisco M. Romero|2021|Dalton Trans.|50|2536|doi:10.1039/D0DT03986A
CCDC 2213984: Experimental Crystal Structure Determination
Related Article: Mario Palacios-Corella, Víctor García-López, Joao Carlos Waerenborgh, Bruno J. C. Vieira, Guillermo Mínguez Espallargas, Miguel Clemente-León, Eugenio Coronado|2023|Chemical Science|14|3048|doi:10.1039/D2SC05800F
CCDC 2217200: Experimental Crystal Structure Determination
Related Article: Isabel Abánades Lázaro, Eleni C. Mazarakioti, Eduardo Andres-Garcia, Bruno J. C. Vieira, João C. Waerenborgh, Iñigo J. Vitórica-Yrezábal, Mónica Giménez-Marqués, Guillermo Mínguez Espallargas|2023|J.Mater.Chem.A|11|5320|doi:10.1039/D2TA08934C
CCDC 2237340: Experimental Crystal Structure Determination
Related Article: Isabel Abánades Lázaro, Eleni C. Mazarakioti, Eduardo Andres-Garcia, Bruno J. C. Vieira, João C. Waerenborgh, Iñigo J. Vitórica-Yrezábal, Mónica Giménez-Marqués, Guillermo Mínguez Espallargas|2023|J.Mater.Chem.A|11|5320|doi:10.1039/D2TA08934C
CCDC 2237339: Experimental Crystal Structure Determination
Related Article: Isabel Abánades Lázaro, Eleni C. Mazarakioti, Eduardo Andres-Garcia, Bruno J. C. Vieira, João C. Waerenborgh, Iñigo J. Vitórica-Yrezábal, Mónica Giménez-Marqués, Guillermo Mínguez Espallargas|2023|J.Mater.Chem.A|11|5320|doi:10.1039/D2TA08934C
CCDC 2217202: Experimental Crystal Structure Determination
Related Article: Isabel Abánades Lázaro, Eleni C. Mazarakioti, Eduardo Andres-Garcia, Bruno J. C. Vieira, João C. Waerenborgh, Iñigo J. Vitórica-Yrezábal, Mónica Giménez-Marqués, Guillermo Mínguez Espallargas|2023|J.Mater.Chem.A|11|5320|doi:10.1039/D2TA08934C