
Luisa Marleny Rodriguez-AlbeloUniversity of Seville | US · Departamento de Ingeniería y Ciencia de los Materiales y del Transporte
Luisa Marleny Rodriguez-Albelo
PhD of Chemistry
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42
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Publications
Publications (42)
This research work proposes a synergistic approach to improve implants' performance through the use of porous Ti substrates to reduce the mismatch between Young's modulus of Ti (around 110 GPa) and the cortical bone (20-25 GPa), and the application of a biodegradable, acrylic acid-based polymeric coating to reduce bacterial adhesion and proliferati...
TiNbZrTa Porous materials Powder metallurgy Tribomechanical behavior a b s t r a c t The use of b-Titanium alloys to fabricate metal implants with Young's modulus that resembles bone tissues is presented as an alternative to commercially pure titanium or a-Titanium alloys, although it is still necessary to introduce proper implant porosity to reach...
Tooth loss is common in patients struggling with dental cavities, periodontal diseases, and tumors, as well as those who abuse tobacco or drugs. In this scenario, dental implants have become the primary treatment option for complete or partial tooth loss. Dental implant failure can be caused by stress shielding phenomenon, poor osseointegration, or...
Despite the increasing progress achieved in the last 20 years in both the fabrication of porous dental implants and the development of new biopolymers for targeting drug therapy, there are important issues such as bone resorption, poor osseointegration, and bacterial infections that remain as critical challenges to avoid clinical failure problems....
In this work, the fatigue and cellular performance of novel superficially treated porous titanium dental implants made up using conventional powder metallurgy and space-holder techniques (30 vol.% and 50 vol.%, both with a spacer size range of 100-200 µm) are evaluated. Before the sintering stage, a specific stage of CNC milling of the screw thread...
Bone resorption and inadequate osseointegration are considered the main problems of
titanium implants. In this investigation, the texture and surface roughness of porous titanium samples obtained by the space holder technique were modified with a femtosecond Yb-doped fiber laser. Different percentages of porosity (30, 40, 50, and 60 vol.%) and part...
The chemical composition and surface topography of titanium implants are essential to
improve implant osseointegration. The present work studies a non-invasive alternative of electrical impedance spectroscopy for the characterization of the macroporosity inherent to the manufacturing process and the effect of the surface treatment with femtosecond...
In this work, the surface of porous titanium samples obtained by the space-holder technique were treated with a femtosecond laser to improve their osseointegration. Instrumented micro-indentation and scratch test were implemented to evaluate the tribo-mechanical behaviour of the surface of the modified samples. A detailed study of micro-hardness, s...
The Cover Feature shows a tandem two-step C−C bond formation catalyzed by a new copper ion exchanged metal-organic framework (MOF) with high basicity and stability. In their Communication, F. G. Cirujano, E. López-Maya et al. describe how to selectively direct the tandem C−C bond formation towards the desired pharmaceutical intermediate by tuning t...
The widespread emissions of toxic gases from fossil fuel combustion represent major welfare risks. Here we report the improvement of the selective sulfur dioxide capture from flue gas emissions of isoreticular nickel pyrazolate metal organic frameworks through the sequential introduction of missing-linker defects and extra-framework barium cations....
Supplementary Figures, Supplementary Tables, Supplementary Methods, Supplementary Notes and Supplementary References
Tuning the electronic structure of metal–organic frameworks is the key to extending their functionality to the photocatalytic conversion of absorbed gases. Herein we discuss how the band edge positions in zeolitic imidazolate frameworks (ZIFs) can be tuned by mixing different imidazole-based linkers within the same structure. We present the band al...
Zeolithische Imidazolat-Gerüste: R. Grau-Crespo, S. Hamad et al. demonstrieren in ihrer Zuschrift auf S. 16246 ff., wie sich die Bandlücken und Bandkantenlagen in zeolithischen Imidazolat-Gerüsten durch die Verwendung von Linkermischungen gezielt einstellen lassen.
Zeolitic Imidazolate Frameworks: In their Communication on page 16012 ff., R. Grau-Crespo, S. Hamad et al. show that using mixed linkers within zeolitic imidazolate frameworks provides a route for tuning their electronic gaps and band edge positions.
Supplementary
A new hierarchical MOF consisting of Cu(II) centers connected by benzene-tricarboxylates (BTC) is prepared by thermo-induced solid transformation of a dense CuBTC precursor phase. The mechanism of the material formation has been thoroughly elucidated and revealed a transformation of a ribbon-like 1D building unit into 2D layers and finally a 3D net...
Tuning the electronic structure of metal–organic frameworks is the key to extending their functionality to the photocatalytic conversion of absorbed gases. Herein we discuss how the band edge positions in zeolitic imidazolate frameworks (ZIFs) can be tuned by mixing different imidazole-based linkers within the same structure. We present the band al...
Platinum group metals (Ru, Os, Rh, Ir, Pd, and Pt) exhibit a wide range of stable oxidation states, coordination geometries, and tunable ligand exchange kinetics and interesting electronic properties. These properties give rise to a wide range of applications in the fields of catalysis, biomedicine, sensing, and light-harvesting processes, among ot...
The current technology of air filtration materials for protection against highly toxic chemicals, i.e. chemical warfare agents, is mainly based on the broad and effective adsorptive properties of hydrophobic activated carbons. However, adsorption does not prevent these materials to behave as secondary emitters once they are contaminated. Thus, the...
The current technology of air-filtration materials for protection against highly toxic chemicals, that is, chemical-warfare agents, is mainly based on the broad and effective adsorptive properties of hydrophobic activated carbons. However, adsorption does not prevent these materials from behaving as secondary emitters once they are contaminated. Th...
Five molecular one-, two-, or three-dimensional (1D, 2D, or 3D) organic–inorganic hybrid polyoxometalates (POMs) based on the {ε-PMoV8MoVI4O40Zn4} (εZn) Keggin unit have been synthesized under hydrothermal conditions using a mixture of O- and N-donor ligands. (TBA)6[PMoV8MoVI4O37(OH)3Zn4]2(C14H8O4)3·6H2O (ε2(biphen)3) is a 3D material with two inte...
The GCMC simulation of CO2 adsorption in MOF-5 is revisited, finding a surprising role of the BDC organic ligand in this process. A novel structure partition methodology is introduced to decompose the relative contributions of the metal oxoclusters and the organic ligands. The origin of the primary step in the CO2 adsorption isotherm in MOF-5 is ex...
Four coordination networks based on the {ε-PMo(V)(8)Mo(VI)(4)O(40)(OH)(4)Zn(4)} Keggin unit (εZn) have been synthesized under hydrothermal conditions. (TBA)(3){PMo(V)(8)Mo(VI)(4)O(36)(OH)(4)Zn(4)}[C(6)H(4)(COO)(2)](2) (ε(isop)(2)) is a 2D material with monomeric εZn units connected via 1,3 benzenedicarboxylate (isop) linkers and tetrabutylammonium...
We report the synthesis and characterization of eight new Mo, W, or V-containing polyoxometalate (POM) bisphosphonate complexes with metal nuclearities ranging from 1 to 6. The compounds were synthesized in water by treating Mo(VI), W(VI), V(IV), or V(V) precursors with biologically active bisphosphonates H(2)O(3)PC(R)(OH)PO(3)H(2) (R = C(3)H(6)NH(...
The grafting of the triangular 1,3,5-benzene tricarboxylate linkers (denoted trim) on tetrahedral ε-Keggin polyoxometalates (POMs) capped by Zn(II) ions, formed in situ under hydrothermal conditions, has generated three novel POM-based metal organic frameworks (POMOFs). (TBA)(3)[PMo(V)(8)Mo(VI)(4)O(36)(OH)(4)Zn(4)][C(6)H(3)(COO)(3)](4/3)·6H(2)O (ε(...
We investigate here a new family of zeolitic Metal Organic Frameworks (MOFs) based on imidazole (im) as the ligand and epsilon-type Keggin PolyOxoMetalates (POMs) as building units. The POM used in this study is the epsilon-{PMo(12)O(40)} Keggin isomer capped by four Zn(ii) ions (noted epsilon-Zn) in tetrahedral coordination. We describe here our m...
The targeted design and simulation of a new family of zeolitic metal-organic frameworks (MOFs) based on benzenedicarboxylate (BDC) as the ligand and epsilon-type Keggin polyoxometalates (POMs) as building units, named here Z-POMOFs, have been performed. A key feature is the use of the analogy between the connectivity of silicon in dense minerals an...
We use periodic DFT calculations to compute the total energy of known zeolitic imidazole frameworks (ZIFs) together with those of hypothetical porous ZIFs. We show that the total energy of ZIFs decreases with increasing density, in a similar fashion to the alu-mino-silicate zeolites, but with a more complex energy landscape. The computational evalu...
This chapter presents the interaction studies between aspirin (ASA) and purified natural clinoptilolite. ASA in solution before and after the addition of natural zeolite (NZ) have been studied by ultraviolet (UV) spectroscopy. The concentration of ASA is only affected by the interaction at high pH values (pH=8), at which the ASA also starts to deco...
Static lattice computer modelling techniques are applied to investigate the framework and extra-framework cation
distribution in clinoptilolite/heulandite zeolitic materials. The results emphasise the close coupling between the framework Al distribution and the location of the extra-framework cations. In the majority of the polymorphs, Al is predic...