Guillermo Minguez Espallargas

Guillermo Minguez Espallargas
University of Valencia | UV · Instituto de Ciencia Molecular (ICMol)

PhD in Chemistry

About

137
Publications
20,537
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6,239
Citations
Additional affiliations
September 2008 - present
Universitat de València
October 2004 - May 2008
The University of Sheffield

Publications

Publications (137)
Article
Herein, we report on the use of tetrathiavulvalene-tetrabenzoic acid, H4TTFTB, to engender semiconductivity in porous hydrogen-bonded organic frameworks (HOFs). By tuning the synthetic conditions, three different polymorphs have been obtained, denoted MUV-20a, MUV-20b, and MUV-21, all of them presenting open structures (22, 15, and 27%, respectivel...
Article
Herein we show the versatility of coordination chemistry to design and expand a family of 2D materials by incorporating F groups at the surface of the layers. Through the use of a prefuntionalized organic linker with F groups, it is possible to achieve a layered magnetic material based on Fe(II) centers that are chemically stable in open air, contr...
Article
Full-text available
Different mixed-ligand Zeolitic Imidazolate Frameworks (ZIFs) with sodalite topology, i.e. isoreticular to ZIF-8, unachievable by conventional synthetic routes, have been prepared using a solvent-free methodology. In particular, the versatility of this method is demonstrated with three different metal centres (Zn, Co and Fe) and binary combinations...
Preprint
Full-text available
Herein we show the versatility of coordination chemistry to design and expand a family of 2D materials by incorporating F groups at the surface of the layers. Through of use of a prefuntionalized organic linker with F groups, it is possible to achieve a layered magnetic material based on Fe(II) centers that are chemically stable in open air, contra...
Preprint
Herein we show the versatility of coordination chemistry to design and expand a family of 2D materials by incorporating F groups at the surface of the layers. Through of use of a prefuntionalized organic linker with F groups, it is possible to achieve a layered magnetic material based on Fe(II) centers that are chemically stable in open air, contra...
Cover Page
Full-text available
The disposition of the frustrated triangular FeIII units and their counter-anions in the crystal lattice cause a change in the magnetic response, inducing the appearance of slow relaxation of the magnetization.
Article
Full-text available
Through rational chemical design, and thanks to the hybrid nature of metal–organic frameworks (MOFs), it is possible to prepare molecule-based 2D magnetic materials stable at ambient conditions. Here, we illustrate the versatility of this approach by changing both the metallic nodes and the ligands in a family of layered MOFs that allows the tuning...
Article
Here we report the first example of nanoMIL-100 particles modified with monomeric cyclodextrin derivatives of different length by exploiting strong interactions between non-saturated iron trimers at the external surface and carboxylate functionalities located at the end of biocompatible and flexible linkers of cyclodextrins. The main results reveal...
Preprint
Full-text available
The combination of the properly designed novel organic linker, 3,6-N-ditriazoyil-2,5-dihydroxy-1,4-benzoquinone (trz2An), with CoII ions results in a 3D ultramicroporous MOF with high CO2 uptake capacity and separation efficiency, with particular attention to CO2/N2 and CO2/CH4 gas mixtures. This material consists of 1D chains of octahedrally coord...
Preprint
Full-text available
Different mixed-ligand Zeolitic Imidazolate Frameworks (ZIFs) with sodalite topology, i.e. isoreticular to ZIF-8, unachievable by conventional synthetic routes, have been prepared using a solvent-free methodology. In particular, the versatility of this method is demonstrated with three different metal centres (Zn, Co and Fe) and binary combinations...
Preprint
Different mixed-ligand Zeolitic Imidazolate Frameworks (ZIFs) with sodalite topology, i.e. isoreticular to ZIF-8, unachievable by conventional synthetic routes, have been prepared using a solvent-free methodology. In particular, the versatility of this method is demonstrated with three different metal centres (Zn, Co and Fe) and binary combinations...
Preprint
The combination of the properly designed novel organic linker, 3,6-N-ditriazoyil-2,5-dihydroxy-1,4-benzoquinone (trz2An), with CoII ions results in a 3D ultramicroporous MOF with high CO2 uptake capacity and separation efficiency, with particular attention to CO2/N2 and CO2/CH4 gas mixtures. This material consists of 1D chains of octahedrally coord...
Preprint
Full-text available
Through rational chemical design, and thanks to the hybrid nature of metal-organic frameworks (MOFs), it is possible to prepare molecule-based 2D magnetic materials stable at ambient conditions. Here, we illustrate the versatility of this approach by changing both the metallic nodes and the ligands in a family of layered MOFs that allows the tuning...
Article
Full-text available
Embedding coherent spin motifs in reproducible molecular building blocks is a promising pathway for the realization of quantum technologies. Three-dimensional (3D) MOFs are a versatile platform for the rational design of extended structures employing coordination chemistry. Here, we report the synthesis and characterization of a gadolinium(III)-bas...
Article
How to unveil pathway complexity in a crystallization process? In their Research Article (DOI: 10.1002/anie.202101611), Alessandro Sorrenti, Marco D′Abramo, Guillermo Mínguez Espallargas, Josep Puigmartí‐Luis et al. show that harnessing a reaction–diffusion (RD) process within a continuous flow microfluidic device, and in milliseconds timescale, is...
Article
Wie lässt sich die Komplexität von Kristallisationsprozessen aufdecken? In ihrem Forschungsartikel (DOI: 10.1002/ange.202101611 ) zeigen Alessandro Sorrenti, Marco D′Abramo, Guillermo Mínguez Espallargas, Josep Puigmartí‐Luis et al., dass die Anwendung eines Reaktions‐Diffusions(RD)‐Prozesses in einem Mikrofluidikreaktor im Millisekundenbereich der...
Article
Full-text available
Coordination polymers (CPs), including metal‐organic frameworks (MOFs), are crystalline materials with promising applications in electronics, magnetism, catalysis, and gas storage/separation. However, the mechanisms and pathways underlying their formation remain largely undisclosed. Herein, we demonstrate that diffusion‐controlled mixing of reagent...
Article
Full-text available
We show that human-made self-assembled materials, such as porous coordination polymers, can follow distinct growth pathways in a given energy landscape in response to a controlled diffusion of reagents. Abstract Coordination polymers (CPs), including metal–organic frameworks (MOFs), are crystalline materials with promising applications in electron...
Article
A novel anilato-based 3D ultramicroporous MOF is reported, displaying a significant balance of high CO 2 separation from CO 2 :N 2 and CO 2 :CH 4 gas mixtures, high thermal stability and high regenerability, a challenge in the separation technology industry.
Article
Carbon capture and storage with porous materials is one of the most promising technologies to minimize CO 2 release into the atmosphere. Here, we report a family of compartmentalized coordination polymers (CCPs) capable of capturing gas molecules in a selective manner based on two novel tetrazole‐based ligands. Crystal structures have been modelled...
Article
Full-text available
A new cobalt metal–organic framework (2D-Co-MOF) based on well-defined layered double cores that are strongly connected by intermolecular bonds has been developed. Its 3D structure is held together by π–π stacking interactions between the labile pyridine ligands of the nanosheets. In aqueous solution, the axial pyridine ligands are exchanged by wat...
Article
Metal–organic framework (MOF)-driven synthesis is considered as a promising alternative for the development of new catalytic materials with well-designed active sites. This synthetic approach is used here to gradually transform a new bimetallic MOF, with Pd and Fe as the metal components, by the in situ generation of aniline under mild conditions....
Article
The isolation in large amounts of high-quality flakes of 2D MOFs remains a challenge. In this work, we obtain nanosheets for a whole family of Fe-based magnetic MOFs, MUV-1-X, through...
Preprint
We report a novel Fe(II) compartmentalized coordination polymer (CCP) capable of physisorbing gas molecules in a selective manner. The crystal structure was modelled theoretically under the Density Functional Theory revealing the presence of discrete voids of 380 Å3, significantly larger than those reported for its predecesors. Adsorption isotherms...
Article
Herein we report the formation and characterization of two novel Zn-based multifunctional metal-organic frameworks (MOFs) based on 1H-indazole-5-carboxylic acid and bipyridine-like linkers, synthesized by soft solvothermal routes. These materials possess isoreticular two-fold interpenetrated 3D-structures which afford a flexible character and allow...
Article
Full-text available
A series of hybrid organo-inorganic mononuclear lanthanoid complexes, [n-NBu4]3[LnH(PW11O39)(phen)2]·H2O, denoted as LM⁴-1-Ln† (Ln = DyIII, TbIII, EuIII, NdIII, ErIII, HoIII and GdIII), were synthesized via hydrothermal synthesis and were structurally characterized by X-ray diffraction. The optical properties of all complexes have been investigated...
Preprint
The isolation in large amounts of high-quality flakes of 2D MOFs remains a challenge. In this work, we develop a liquid exfoliation procedure to obtain nanosheets for a whole family of Fe-based magnetic MOFs, MUV-1-X. High-quality crystalline layers with lateral sizes of 8 µm and thicknesses of 4 nm, which keep the structural integrity and magnetic...
Preprint
MOF-driven synthesis is considered as a promising alternative for the development of new catalytic materials with well-designed active sites. This synthetic approach is used here to gradually transform a new bimetallic MOF, composed of Pd and Fe as metal components, via the in situ generation of aniline under mild conditions. This methodology resul...
Article
The first family of hybrid mononuclear organic-inorganic lanthanoid complexes is reported, based on [PW11O39]7– and 1,10- phenathroline ligands. This hybrid approach causes a dramatic improvement of the relaxation time (x 1000) with a decrease of the optimal field while maintaining the Ueff of the inorganic analogues.
Article
The synthesis of a new microporous metal-organic framework (MOF) based on two secondary building units, with dinuclear cobalt centers, has been developed. The employment of a well-defined cobalt cluster results in an unusual topology of the Co 2 -MOF, where one of the cobalt centers has three open coordination positions, which has no precedent in M...
Article
Full-text available
The design of metal-organic frameworks (MOFs) incorporating electroactive guest molecules in the pores has become a subject of great interest in order to obtain additional electrical functionalities within the framework while maintaining porosity. Understanding the charge-transfer (CT) process between the framework and the guest molecules is a cruc...
Article
Here we show for the first time a MOF that is photocatalytically active for the light-assisted CO2 methanation at mild conditions (215 °C) without the inclusion of metallic nanoparticles or...
Preprint
div>Here we show for the first time a MOF that is photocatalytically active for the light-assisted CO<sub>2</sub> methanation at mild conditions (215 °C) without the inclusion of metallic nanoparticles or any sacrificial agent. The presence of Cu<sub>2</sub>O nanoparticles causes a 50 % increase in the photocatalytic activity. These results pave...
Article
Tetrathiafulvalene‐Lanthanide (TTF‐Ln) Metal‐Organic Frameworks (MOFs) are an interesting class of multifunctional materials in which porosity can be combined with electronic properties such as electrical conductivity, redox activity, luminescence and magnetism. Herein we report a new family of isostructural TTF‐Ln MOFs, denoted as MUV‐5(Ln) (Ln =...
Preprint
div>Tetrathiafulvalene-Lanthanide (TTF-Ln) Metal-Organic Frameworks (MOFs) are an interesting class of multifunctional materials in which porosity can be combined with electronic properties such as electrical conductivity, redox activity, luminescence and magnetism. Herein we report a new family of isostructural TTF-Ln MOFs, denoted as MUV-5(Ln) (L...
Preprint
p>The design of Metal-Organic Frameworks (MOFs) incorporating electroactive guest molecules in the pores has become a subject of great interest in order to install additional electrical functionalities within the framework while maintaining porosity. In this direction, understanding the charge-transfer (CT) process between the framework and the gue...
Article
Herein we report the synthesis of an elusive metal-organic framework, the iron(II) analogue of ZIF-8, with formula Fe(2-methylimidazolate)2, here denoted as MUV-3. The preparation of this highly interesting porous material, inaccessible by common synthetic procedures, occurs in a solvent-free reaction upon addition of an easily detachable template...
Article
The crystal structure of an interpenetrated tetrathiafulvalene(TTF)-based metal-organic framework (MOF) is reported. This MOF, denoted MUV-2-i, is the interpenetrated analogue of the hierarchical and flexible MUV-2. Interestingly, the large flexibility exhibited by MUV-2 upon polar solvent adsorption is considerably reduced in the interpenetrated f...
Preprint
p> Herein we report the synthesis of an elusive metal-organic framework, the iron(II) analogue of ZIF-8, with formula Fe(2-methylimidazolate)<sub>2</sub>, here denoted as MUV-3. The preparation of this highly interesting porous material, inaccessible by common synthetic procedures, occurs in a solvent-free reaction upon addition of an easily detach...
Article
Separation of propylene/propane is one of the most challenging and energy consuming processes in the chemical industry. Propylene demand is increasing and a 99.5% purity is required for industrial purposes. Adsorption based solutions are the most promising alternatives to improve the economical/energetic efficiency of the process. Zeolitic Imidazol...
Preprint
Full-text available
b>Coordination polymers (CPs), including metal-organic frameworks (MOFs), have recently emerged as a platform to design new materials with novel applications in fields such as electronics, magnetism, catalysis, optics and gas storage/separation. However, the pathways followed and the mechanisms underlying their formation remain largely unknown and...
Preprint
p>The crystal structure of an interpenetrated tetrathiafulvalene(TTF)- based metal-organic framework (MOF) is reported. This MOF, denoted MUV-2-i, is the interpenetrated analogue of the hierarchical and flexible MUV-2. Interestingly, the large flexibility exhibited by MUV-2 upon polar solvent adsorption is considerably reduced in the interpenetrate...
Article
Full-text available
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 a...
Article
Here we report the structural flexibility of a Dy-based Single-Ion Magnet MOF in which its magnetic properties can be modified through a ligand substitution process involving an increase of the...
Preprint
p>Here we report the structural flexibility of a Dy-based Single-Ion Magnet MOF in which its magnetic properties can be modified through a ligand substitution process involving an increase of the charge density of the coordination environment.</p
Article
Full-text available
“Breathing” metal-organic frameworks (MOFs) exhibiting changes in their structural and physical properties upon an external stimulus are an interesting class of crystalline materials due to their potential applications including chemical sensors. The addition of redox activity opens up a new pathway for multi-functional “breathing” frameworks. Here...
Article
Modification of the magnetic properties in a solid‐state material upon external stimulus has attracted much attention in the recent years for their potential applications as switches and sensors. Within the field of coordination polymers, gas sorption studies typically focus on porous solids, with the gas molecules accommodating in the channels. He...
Article
Full-text available
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 2-11 and different organic solven...
Article
Full-text available
This review covers the incorporation of different magnetic phenomena into MOFs, either in the framework or through the encapsulation of functional species in the pores.
Preprint
Full-text available
p>Chemical functionalization has demonstrated to be a powerful approach to tailor the physical and chemical properties of two-dimensional (2D) materials, to increase their processability and stability, to add new functionalities and, even, to create new 2D materials. However, this post synthetic method – which involves the anchoring of molecules o...
Preprint
p>Chemical functionalization has demonstrated to be a powerful approach to tailor the physical and chemical properties of two-dimensional (2D) materials, to increase their processability and stability, to add new functionalities and, even, to create new 2D materials. However, this post synthetic method – which involves the anchoring of molecules o...
Preprint
p>Modification of the magnetic properties in a solid-state material upon external stimulus has attracted much attention in the recent years for their potential applications as switches and sensors. Within the field of coordination polymers, gas sorption studies typically focus on porous solids, with the gas molecules accommodating in the channels....
Preprint
p>Modification of the magnetic properties in a solid-state material upon external stimulus has attracted much attention in the recent years for their potential applications as switches and sensors. Within the field of coordination polymers, gas sorption studies typically focus on porous solids, with the gas molecules accommodating in the channels....
Article
Full-text available
A new family of chloroquinolinate lanthanoid complexes of formula A+[Ln(5,7Cl2q)4]-, with Ln = Y3+, Tb3+ and Dy3+ and A+ = Na+, NEt4+ and K0.5(NEt4)0.5+ is studied, both in bulk and as thin films. Several members are found to present single-molecule magnetic behavior in bulk. Interestingly, the sodium salts can be sublimed in high vacuum conditions...