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Gutiérrez-Capitán M, Sanchís A, Carvalho EO, Baldi A, Vilaplana L, Cardoso VF, Calleja Á, Wei M, de la Rica R, Hoyo J, Bassegoda A, Tzanov T, Marco MP, Lanceros-Méndez S, Fernández-Sánchez C. Engineering a Point-of-Care Paper-Microfluidic Electrochemical Device Applied to the Multiplexed Quantitative Detection of Biomarkers in Sputum. ACS Sens 2023; 8:3032-3042. [PMID: 37467113 PMCID: PMC10463273 DOI: 10.1021/acssensors.3c00523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/03/2023] [Indexed: 07/21/2023]
Abstract
Health initiatives worldwide demand affordable point-of-care devices to aid in the reduction of morbidity and mortality rates of high-incidence infectious and noncommunicable diseases. However, the production of robust and reliable easy-to-use diagnostic platforms showing the ability to quantitatively measure several biomarkers in physiological fluids and that could in turn be decentralized to reach any relevant environment remains a challenge. Here, we show the particular combination of paper-microfluidic technology, electrochemical transduction, and magnetic nanoparticle-based immunoassay approaches to produce a unique, compact, and easily deployable multiplex device to simultaneously measure interleukin-8, tumor necrosis factor-α, and myeloperoxidase biomarkers in sputum, developed with the aim of facilitating the timely detection of acute exacerbations of chronic obstructive pulmonary disease. The device incorporates an on-chip electrochemical cell array and a multichannel paper component, engineered to be easily aligned into a polymeric cartridge and exchanged if necessary. Calibration curves at clinically relevant biomarker concentration ranges are produced in buffer and artificial sputum. The analysis of sputum samples of healthy individuals and acutely exacerbated patients produces statistically significant biomarker concentration differences between the two studied groups. The device can be mass-produced at a low cost, being an easily adaptable platform for measuring other disease-related target biomarkers.
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Affiliation(s)
| | - Ana Sanchís
- Nanobiotechnology
for Diagnostics (Nb4D), Institute for Advanced
Chemistry of Catalonia (IQAC), CSIC, 08034 Barcelona, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Estela O. Carvalho
- Centre
of Physics of the Universities of Minho and Porto (CF-UM-UP) and LaPMET, 4710-057 Braga, Portugal
| | - Antonio Baldi
- Instituto
de Microelectrónica de Barcelona, IMB-CNM (CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Lluïsa Vilaplana
- Nanobiotechnology
for Diagnostics (Nb4D), Institute for Advanced
Chemistry of Catalonia (IQAC), CSIC, 08034 Barcelona, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Vanessa F. Cardoso
- Centre
of Physics of the Universities of Minho and Porto (CF-UM-UP) and LaPMET, 4710-057 Braga, Portugal
- CMEMS-UMinho, 4800-058 Guimarães, Portugal
| | - Álvaro Calleja
- Instituto
de Microelectrónica de Barcelona, IMB-CNM (CSIC), Campus UAB, 08193 Bellaterra, Spain
| | | | - Roberto de la Rica
- Multidisciplinary
Sepsis Group, Health Research Institute
of the Balearic Islands (IdISBa), 07120 Palma de Mallorca, Spain
- Centro
de Investigación Biomédica en Red de Enfermedades Infecciosas
(CIBER-INFEC), 28029 Madrid, Spain
| | - Javier Hoyo
- Grup
de Biotecnologia Molecular i Industrial, Departament d’Enginyeria
Química, Universitat Politècnica
de Catalunya, 08222 Terrassa, Spain
| | - Arnau Bassegoda
- Grup
de Biotecnologia Molecular i Industrial, Departament d’Enginyeria
Química, Universitat Politècnica
de Catalunya, 08222 Terrassa, Spain
| | - Tzanko Tzanov
- Grup
de Biotecnologia Molecular i Industrial, Departament d’Enginyeria
Química, Universitat Politècnica
de Catalunya, 08222 Terrassa, Spain
| | - María-Pilar Marco
- Nanobiotechnology
for Diagnostics (Nb4D), Institute for Advanced
Chemistry of Catalonia (IQAC), CSIC, 08034 Barcelona, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Senentxu Lanceros-Méndez
- Centre
of Physics of the Universities of Minho and Porto (CF-UM-UP) and LaPMET, 4710-057 Braga, Portugal
- Basque
Centre for Materials and Applications (BCMaterials), UPV/EHU, 48940 Leioa, Spain
- IKERBASQUE, 48009 Bilbao, Spain
| | - César Fernández-Sánchez
- Instituto
de Microelectrónica de Barcelona, IMB-CNM (CSIC), Campus UAB, 08193 Bellaterra, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
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2
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Pamplona R, González-Lana S, Romero P, Ochoa I, Martín-Rapún R, Sánchez-Somolinos C. Tuning of Mechanical Properties in Photopolymerizable Gelatin-Based Hydrogels for In Vitro Cell Culture Systems. ACS Appl Polym Mater 2023; 5:1487-1498. [PMID: 36817339 PMCID: PMC9926877 DOI: 10.1021/acsapm.2c01980] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 01/16/2023] [Indexed: 06/12/2023]
Abstract
The mechanical microenvironment plays a crucial role in the evolution of colorectal cancer, a complex disease characterized by heterogeneous tumors with varying elasticity. Toward setting up distinct scenarios, herein, we describe the preparation and characterization of gelatin methacrylamide (GelMA)-based hydrogels via two different mechanisms: free-radical photopolymerization and photo-induced thiol-ene reaction. A precise stiffness modulation of covalently crosslinked scaffolds was achieved through the application of well-defined irradiation times while keeping the intensity constant. Besides, the incorporation of thiol chemistry strongly increased stiffness with low to moderate curing times. This wide range of finely tuned mechanical properties successfully covered from healthy tissue to colorectal cancer stages. Hydrogels prepared in phosphate-buffered saline or Dulbecco's modified Eagle's medium resulted in different mechanical and swelling properties, although a similar trend was observed for both conditions: thiol-ene systems exhibited higher stiffness and, at the same time, higher swelling capacity than free-radical photopolymerized networks. In terms of biological behavior, three of the substrates showed good cell proliferation rates according to the formation of a confluent monolayer of Caco-2 cells after 14 days of cell culture. Likewise, a characteristic apical-basal polarization of cells was observed for these three hydrogels. These results demonstrate the versatility of the presented platform of biomimetic materials as in vitro cell culture scaffolds.
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Affiliation(s)
- Regina Pamplona
- Aragón
Institute of Nanoscience and Materials (INMA), Department of Organic
Chemistry, CSIC-University of Zaragoza, C/ Pedro Cerbuna 12, 50009Zaragoza, Spain
| | - Sandra González-Lana
- BEONCHIP
S.L., CEMINEM, Campus
Río Ebro. C/ Mariano Esquillor Gómez s/n, 50018Zaragoza, Spain
- Tissue
Microenvironment (TME) Laboratory, Aragón Institute of Engineering
Research (I3A), University of Zaragoza, C/ Mariano Esquillor s/n, 50018Zaragoza, Spain
| | - Pilar Romero
- Aragón
Institute of Nanoscience and Materials (INMA), Department of Organic
Chemistry, CSIC-University of Zaragoza, C/ Pedro Cerbuna 12, 50009Zaragoza, Spain
| | - Ignacio Ochoa
- Tissue
Microenvironment (TME) Laboratory, Aragón Institute of Engineering
Research (I3A), University of Zaragoza, C/ Mariano Esquillor s/n, 50018Zaragoza, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina, Instituto
de Salud Carlos III, 50018Zaragoza, Spain
- Institute
for Health Research Aragón (IIS Aragón), Paseo de Isabel La Católica
1-3, 50009Zaragoza, Spain
| | - Rafael Martín-Rapún
- Aragón
Institute of Nanoscience and Materials (INMA), Department of Organic
Chemistry, CSIC-University of Zaragoza, C/ Pedro Cerbuna 12, 50009Zaragoza, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina, Instituto
de Salud Carlos III, 50018Zaragoza, Spain
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Zaragoza, C/ Pedro Cerbuna 12, 50009Zaragoza, Spain
| | - Carlos Sánchez-Somolinos
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina, Instituto
de Salud Carlos III, 50018Zaragoza, Spain
- Aragón
Institute of Nanoscience and Materials (INMA), Department of Condensed
Matter Physics (Faculty of Science), CSIC-University
of Zaragoza, C/ Pedro
Cerbuna 12, 50009Zaragoza, Spain
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3
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El Hauadi K, Resina L, Zanuy D, Esteves T, Ferreira FC, Pérez-Madrigal MM, Alemán C. Dendritic Self-assembled Structures from Therapeutic Charged Pentapeptides. Langmuir 2022; 38:12905-12914. [PMID: 36229043 PMCID: PMC9988208 DOI: 10.1021/acs.langmuir.2c02010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/04/2022] [Indexed: 06/16/2023]
Abstract
CRENKA [Cys-Arg-(NMe)Glu-Lys-Ala, where (NMe)Glu refers to N-methyl-Glu], an anti-cancer pentapeptide that induces prostate tumor necrosis and significant reduction in tumor growth, was engineered to increase the resistance to endogenous proteases of its parent peptide, CREKA (Cys-Arg-Glu-Lys-Ala). Considering their high tendency to aggregate, the self-assembly of CRENKA and CREKA into well-defined and ordered structures has been examined as a function of peptide concentration and pH. Spectroscopic studies and atomistic molecular dynamics simulations reveal significant differences between the secondary structures of CREKA and CRENKA. Thus, the restrictions imposed by the (NMe)Glu residue reduce the conformational variability of CRENKA with respect to CREKA, which significantly affects the formation of well-defined and ordered self-assembly morphologies. Aggregates with poorly defined morphology are obtained from solutions with low and moderate CREKA concentrations at pH 4, whereas well-defined dendritic microstructures with fractal geometry are obtained from CRENKA solutions with similar peptide concentrations at pH 4 and 7. The formation of dendritic structures is proposed to follow a two-step mechanism: (1) pseudo-spherical particles are pre-nucleated through a diffusion-limited aggregation process, pre-defining the dendritic geometry, and (2) such pre-nucleated structures coalesce by incorporating conformationally restrained CRENKA molecules from the solution to their surfaces, forming a continuous dendritic structure. Instead, no regular assembly is obtained from solutions with high peptide concentrations, as their dynamics is dominated by strong repulsive peptide-peptide electrostatic interactions, and from solutions at pH 10, in which the total peptide charge is zero. Overall, results demonstrate that dendritic structures are only obtained when the molecular charge of CRENKA, which is controlled through the pH, favors kinetics over thermodynamics during the self-assembly process.
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Affiliation(s)
- Karima El Hauadi
- Departament
d’Enginyeria Química and Barcelona Research Center for
Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany 10-14, Barcelona 08019, Spain
| | - Leonor Resina
- Departament
d’Enginyeria Química and Barcelona Research Center for
Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany 10-14, Barcelona 08019, Spain
- Department
of Bioengineering, iBB − Institute for Bioengineering and Biosciences,
Instituto Superior Técnico, Universidade
de Lisboa, Avenida Rovisco Pais 1, Lisboa 1049-001, Portugal
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy at Instituto
Superior Técnico, Universidade de
Lisboa, Avenida Rovisco Pais 1, Lisboa 1049-001, Portugal
| | - David Zanuy
- Departament
d’Enginyeria Química and Barcelona Research Center for
Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany 10-14, Barcelona 08019, Spain
| | - Teresa Esteves
- Department
of Bioengineering, iBB − Institute for Bioengineering and Biosciences,
Instituto Superior Técnico, Universidade
de Lisboa, Avenida Rovisco Pais 1, Lisboa 1049-001, Portugal
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy at Instituto
Superior Técnico, Universidade de
Lisboa, Avenida Rovisco Pais 1, Lisboa 1049-001, Portugal
| | - Frederico Castelo Ferreira
- Department
of Bioengineering, iBB − Institute for Bioengineering and Biosciences,
Instituto Superior Técnico, Universidade
de Lisboa, Avenida Rovisco Pais 1, Lisboa 1049-001, Portugal
- Associate
Laboratory i4HB—Institute for Health and Bioeconomy at Instituto
Superior Técnico, Universidade de
Lisboa, Avenida Rovisco Pais 1, Lisboa 1049-001, Portugal
| | - Maria M. Pérez-Madrigal
- Departament
d’Enginyeria Química and Barcelona Research Center for
Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany 10-14, Barcelona 08019, Spain
| | - Carlos Alemán
- Departament
d’Enginyeria Química and Barcelona Research Center for
Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany 10-14, Barcelona 08019, Spain
- Institute
for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, Barcelona 08028, Spain
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Ramos-Pineda AM, Manjón E, Macías RIR, García-Estévez I, Escribano-Bailón MT. Role of Yeast Mannoproteins in the Interaction between Salivary Proteins and Flavan-3-ols in a Cell-Based Model of the Oral Epithelium. J Agric Food Chem 2022; 70:13027-13035. [PMID: 35640024 PMCID: PMC9585572 DOI: 10.1021/acs.jafc.1c08339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Astringency is a highly complex sensation which involves multiple mechanisms occurring simultaneously, such as the interaction between flavan-3-ols and salivary proteins (SP). Moreover, astringency development can be affected by the presence of polysaccharides such as mannoproteins (MP). The aim of this work was to evaluate the molecular mechanisms whereby MP could modulate the astringency elicited by tannins, using a cell-based model of the oral epithelium (TR146 cells), and the effect of salivary proteins on these interactions. The binding of flavan-3-ols to oral cells was evaluated by DMACA assay, while the content of unbound flavan-3-ols after the interactions was assessed by means of HPLC-DAD-MS. Results obtained confirm the existence of cell-tannin interactions, that can be partially inhibited by the presence of SP and/or MP. The most significant decrease was obtained in the system containing MPF (38.16%). Both mannoproteins assayed seem to have modulating effect on flavan-3-ol-SP interactions, acting by two different mechanisms: MPF would lead to the formation of SP/MPF/flavan-3-ols ternary soluble aggregates, while MPL seems to prevent flavan-3-ol-saliva interaction by a competitive mechanism, i.e., MPL would reduce cell-tannin interactions, similar to SP. This study suggests that mannoproteins with different compositional characteristics could exhibit preferential interaction with distinct flavan-3-ol families.
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Affiliation(s)
- A. M. Ramos-Pineda
- Grupo
de Investigación en Polifenoles (GIP), Departamento de Química
Analítica, Nutrición y Bromatología, Facultad
de Farmacia, Universidad de Salamanca, Salamanca, E37007, España
- Natac
Biotech S.L., C/Electrónica
7, E28923 Alcorcón, Spain
| | - E. Manjón
- Grupo
de Investigación en Polifenoles (GIP), Departamento de Química
Analítica, Nutrición y Bromatología, Facultad
de Farmacia, Universidad de Salamanca, Salamanca, E37007, España
| | - R. I. R. Macías
- Experimental
Hepatology and Drug Targeting (HEVEPHARM) Group, Institute of Biomedical
Research of Salamanca (IBSAL), CIBERehd, Universidad de Salamanca, Salamanca, E37007, Spain
| | - I. García-Estévez
- Grupo
de Investigación en Polifenoles (GIP), Departamento de Química
Analítica, Nutrición y Bromatología, Facultad
de Farmacia, Universidad de Salamanca, Salamanca, E37007, España
| | - M. T. Escribano-Bailón
- Grupo
de Investigación en Polifenoles (GIP), Departamento de Química
Analítica, Nutrición y Bromatología, Facultad
de Farmacia, Universidad de Salamanca, Salamanca, E37007, España
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5
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Sans J, Arnau M, Roa JJ, Turon P, Alemán C. Tailorable Nanoporous Hydroxyapatite Scaffolds for Electrothermal Catalysis. ACS Appl Nano Mater 2022; 5:8526-8536. [PMID: 36910876 PMCID: PMC9989946 DOI: 10.1021/acsanm.2c01915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Polarized hydroxyapatite (HAp) scaffolds with customized architecture at the nanoscale have been presented as a green alternative to conventional catalysts used for carbon and dinitrogen fixation. HAp printable inks with controlled nanoporosity and rheological properties have been successfully achieved by incorporating Pluronic hydrogel. Nanoporous scaffolds with good mechanical properties, as demonstrated by means of the nanoindentation technique, have been obtained by a sintering treatment and the posterior thermally induced polarization process. Their catalytic activity has been evaluated by considering three different key reactions (all in the presence of liquid water): (1) the synthesis of amino acids from gas mixtures of N2, CO2, and CH4; (2) the production of ethanol from gas mixtures of CO2 and CH4; and (3) the synthesis of ammonia from N2 gas. Comparison of the yields obtained by using nanoporous and nonporous (conventional) polarized HAp catalysts shows that both the nanoporosity and water absorption capacity of the former represent a drawback when the catalytic reaction requires auxiliary coating layers, as for example for the production of amino acids. This is because the surface nanopores achieved by incorporating Pluronic hydrogel are completely hindered by such auxiliary coating layers. On the contrary, the catalytic activity improves drastically for reactions in which the HAp-based scaffolds with enhanced nanoporosity are used as catalysts. More specifically, the carbon fixation from CO2 and CH4 to yield ethanol improves by more than 3000% when compared with nonporous HAp catalyst. Similarly, the synthesis of ammonia by dinitrogen fixation increases by more than 2000%. Therefore, HAp catalysts based on nanoporous scaffolds exhibit an extraordinary potential for scalability and industrial utilization for many chemical reactions, enabling a feasible green chemistry alternative to catalysts based on heavy metals.
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Affiliation(s)
- Jordi Sans
- Departament
d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
| | - Marc Arnau
- Departament
d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
| | - Joan Josep Roa
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- CIEFMA-Departament
de Ciència i Eng. de Materials, Universitat
Politècnica de Catalunya, Eduard Maristany 10-14, Ed. I, 08019 Barcelona, Spain
| | - Pau Turon
- B.
Braun Surgical, S.A.U. Carretera de Terrassa 121 Rubí, 08191 Barcelona, Spain
| | - Carlos Alemán
- Departament
d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- Institute
for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
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6
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Tejedor I, Andrés MA, Carné-Sánchez A, Arjona M, Pérez-Miana M, Sánchez-Laínez J, Coronas J, Fontaine P, Goldmann M, Roubeau O, Maspoch D, Gascón I. Influence of the Surface Chemistry of Metal-Organic Polyhedra in Their Assembly into Ultrathin Films for Gas Separation. ACS Appl Mater Interfaces 2022; 14:27495-27506. [PMID: 35657142 PMCID: PMC9204701 DOI: 10.1021/acsami.2c06123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
The formation of ultrathin films of Rh-based porous metal-organic polyhedra (Rh-MOPs) by the Langmuir-Blodgett method has been explored. Homogeneous and dense monolayer films were formed at the air-water interface either using two different coordinatively alkyl-functionalized Rh-MOPs (HRhMOP(diz)12 and HRhMOP(oiz)12) or by in situ incorporation of aliphatic chains to the axial sites of dirhodium paddlewheels of another Rh-MOP (OHRhMOP) at the air-liquid interface. All these Rh-MOP monolayers were successively deposited onto different substrates in order to obtain multilayer films with controllable thicknesses. Aliphatic chains were partially removed from HRhMOP(diz)12 films post-synthetically by a simple acid treatment, resulting in a relevant modification of the film hydrophobicity. Moreover, the CO2/N2 separation performance of Rh-MOP-supported membranes was also evaluated, proving that they can be used as selective layers for efficient CO2 separation.
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Affiliation(s)
- Inés Tejedor
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Zaragoza 50009, Spain
- Departamento
de Química Física, Universidad
de Zaragoza, Zaragoza 50009, Spain
| | - Miguel A. Andrés
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Zaragoza 50009, Spain
- Departamento
de Química Física, Universidad
de Zaragoza, Zaragoza 50009, Spain
| | - Arnau Carné-Sánchez
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | - Mónica Arjona
- Departamento
de Química Física, Universidad
de Zaragoza, Zaragoza 50009, Spain
| | - Marta Pérez-Miana
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Zaragoza 50009, Spain
- Chemical
and Environmental Engineering Department, Universidad de Zaragoza, Zaragoza 50018, Spain
| | - Javier Sánchez-Laínez
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Zaragoza 50009, Spain
- Chemical
and Environmental Engineering Department, Universidad de Zaragoza, Zaragoza 50018, Spain
| | - Joaquín Coronas
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Zaragoza 50009, Spain
- Chemical
and Environmental Engineering Department, Universidad de Zaragoza, Zaragoza 50018, Spain
| | - Philippe Fontaine
- Synchrotron
SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, Gif-sur-Yvette 91192, France
| | - Michel Goldmann
- Synchrotron
SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, Gif-sur-Yvette 91192, France
- Institut
des NanoSciences de Paris, UMR 7588 CNRS, Sorbonne Université, 4 Place Jussieu, Paris Cedex 05 75252, France
| | - Olivier Roubeau
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Daniel Maspoch
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, Barcelona 08193, Spain
| | - Ignacio Gascón
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, Zaragoza 50009, Spain
- Departamento
de Química Física, Universidad
de Zaragoza, Zaragoza 50009, Spain
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7
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Perrero J, Enrique-Romero J, Martínez-Bachs B, Ceccarelli C, Balucani N, Ugliengo P, Rimola A. Non-energetic Formation of Ethanol via CCH Reaction with Interstellar H 2O Ices. A Computational Chemistry Study. ACS Earth Space Chem 2022; 6:496-511. [PMID: 35330630 PMCID: PMC8935465 DOI: 10.1021/acsearthspacechem.1c00369] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/21/2022] [Accepted: 02/27/2022] [Indexed: 05/30/2023]
Abstract
Ethanol (CH3CH2OH) is a relatively common molecule, often found in star-forming regions. Recent studies suggest that it could be a parent molecule of several so-called interstellar complex organic molecules (iCOMs). However, the formation route of this species remains under debate. In the present work, we study the formation of ethanol through the reaction of CCH with one H2O molecule belonging to the ice as a test case to investigate the viability of chemical reactions based on a "radical + ice component" scheme as an alternative mechanism for the synthesis of iCOMs, beyond the usual radical-radical coupling. This has been done by means of DFT calculations adopting two clusters of 18 and 33 water molecules as ice models. Results indicate that CH3CH2OH can potentially be formed by this proposed reaction mechanism. The reaction of CCH with H2O on the water ice clusters can be barrierless (because of the help of boundary icy water molecules acting as proton-transfer assistants), leading to the formation of vinyl alcohol precursors (H2CCOH and CHCHOH). Subsequent hydrogenation of vinyl alcohol yielding ethanol is the only step presenting a low activation energy barrier. We finally discuss the astrophysical implications of these findings.
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Affiliation(s)
- Jessica Perrero
- Departament
de Química, Universitat Autònoma
de Barcelona, Bellaterra, 08193 Catalonia, Spain
- Dipartimento
di Chimica and Nanostructured Interfaces and Surfaces (NIS) Centre, Università degli Studi di Torino, via P. Giuria 7, 10125 Torino, Italy
| | - Joan Enrique-Romero
- Departament
de Química, Universitat Autònoma
de Barcelona, Bellaterra, 08193 Catalonia, Spain
- Univ.
Grenoble Alpes, CNRS, Institut de Planétologie
et d’Astrophysique de Grenoble (IPAG), 38000 Grenoble, France
| | - Berta Martínez-Bachs
- Departament
de Química, Universitat Autònoma
de Barcelona, Bellaterra, 08193 Catalonia, Spain
| | - Cecilia Ceccarelli
- Univ.
Grenoble Alpes, CNRS, Institut de Planétologie
et d’Astrophysique de Grenoble (IPAG), 38000 Grenoble, France
| | - Nadia Balucani
- Univ.
Grenoble Alpes, CNRS, Institut de Planétologie
et d’Astrophysique de Grenoble (IPAG), 38000 Grenoble, France
- Dipartimento
di Chimica, Biologia e Biotecnologie, Università
di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
- Osservatorio
Astrosico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy
| | - Piero Ugliengo
- Dipartimento
di Chimica and Nanostructured Interfaces and Surfaces (NIS) Centre, Università degli Studi di Torino, via P. Giuria 7, 10125 Torino, Italy
| | - Albert Rimola
- Departament
de Química, Universitat Autònoma
de Barcelona, Bellaterra, 08193 Catalonia, Spain
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8
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Navarro-Urrios D, Colombano MF, Arregui G, Madiot G, Pitanti A, Griol A, Makkonen T, Ahopelto J, Sotomayor-Torres CM, Martínez A. Room-Temperature Silicon Platform for GHz-Frequency Nanoelectro-Opto-Mechanical Systems. ACS Photonics 2022; 9:413-419. [PMID: 36193113 PMCID: PMC9523580 DOI: 10.1021/acsphotonics.1c01614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanoelectro-opto-mechanical systems enable the synergistic coexistence of electrical, mechanical, and optical signals on a chip to realize new functions. Most of the technology platforms proposed for the fabrication of these systems so far are not fully compatible with the mainstream CMOS technology, thus, hindering the mass-scale utilization. We have developed a CMOS technology platform for nanoelectro-opto-mechanical systems that includes piezoelectric interdigitated transducers for electronic driving of mechanical signals and nanocrystalline silicon nanobeams for an enhanced optomechanical interaction. Room-temperature operation of devices at 2 GHz and with peak sensitivity down to 2.6 cavity phonons is demonstrated. Our proof-of-principle technology platform can be integrated and interfaced with silicon photonics, electronics, and MEMS devices and may enable multiple functions for coherent signal processing in the classical and quantum domains.
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Affiliation(s)
- Daniel Navarro-Urrios
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
- MIND-IN2UB,
Departament d’Electrònica, Facultat de Física, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
| | - Martín F. Colombano
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Guillermo Arregui
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Guilhem Madiot
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Alessandro Pitanti
- NEST,
Istituto Nanoscienze − CNR and Scuola Normale Superiore, Piazza San Silvestro 12, I-56127, Pisa, Italy
| | - Amadeu Griol
- Nanophotonics
Technology Center, Universitat Politècnica
de Valencia, Building 8F, Camino de Vera s/n, 46022, Valencia, Spain
| | - Tapani Makkonen
- VTT
Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT, Espoo, Finland
| | - Jouni Ahopelto
- VTT
Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 VTT, Espoo, Finland
| | - Clivia M. Sotomayor-Torres
- Catalan
Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain
- Catalan
Institute for Research and Advances Studies ICREA, 08010 Barcelona, Spain
| | - Alejandro Martínez
- Nanophotonics
Technology Center, Universitat Politècnica
de Valencia, Building 8F, Camino de Vera s/n, 46022, Valencia, Spain
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9
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Gutiérrez-Serpa A, Kundu T, Pasán J, Jiménez-Abizanda AI, Kaskel S, Senkovska I, Pino V. Zirconium-Based Metal-Organic Framework Mixed-Matrix Membranes as Analytical Devices for the Trace Analysis of Complex Cosmetic Samples in the Assessment of Their Personal Care Product Content. ACS Appl Mater Interfaces 2022; 14:4510-4521. [PMID: 35006682 PMCID: PMC8796172 DOI: 10.1021/acsami.1c21284] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
A device comprising a zirconium-based metal-organic framework (MOF) mixed-matrix membrane (MMM) framed in a plastic holder has been used to monitor the content of personal care products (PCPs) in cosmetic samples. Seven different devices containing the porous frameworks UiO-66, UiO-66-COOH, UiO-67, DUT-52, DUT-67, MOF-801, and MOF-808 in polyvinylidene fluoride (PVDF) membranes were studied. Optimized membranes reach high adsorption capacities of PCPs, up to 12.5 mg·g-1 benzophenone in a 3.0 mg·L-1 sample. The MMM adsorption kinetics, uptake measurements, and isotherm studies were carried out with aqueous standard solutions of PCPs to ensure complete characterization of the performance. The studies demonstrate the high applicability and selectivity of the composites prepared, highlighting the performance of PVDF/DUT-52 MMM that poses uptakes up to 78% for those PCPs with higher affinity while observing detection limits for the entire method down to 0.03 μg·L-1. The PVDF/DUT-52 device allowed the detection of parabens and benzophenones in the samples, with PCPs found at concentrations of 1.9-24 mg·L-1.
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Affiliation(s)
- Adrián Gutiérrez-Serpa
- Laboratorio
de Materiales para Análisis Químicos (MAT4ALL), Departamento
de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
- Unidad
de Investigación de Bioanalítica y Medioambiente, Instituto
Universitario de Enfermedades Tropicales y Salud Pública de
Canarias, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
| | - Tanay Kundu
- Department
of Chemistry, SRM Institute of Science and
Technology, Kattankulathur, 603203 Chennai, Tamil Nadu, India
| | - Jorge Pasán
- Laboratorio
de Materiales para Análisis Químicos (MAT4ALL), Departamento
de Química, Unidad Departamental de Química Inorgánica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
| | - Ana I. Jiménez-Abizanda
- Laboratorio
de Materiales para Análisis Químicos (MAT4ALL), Departamento
de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
| | - Stefan Kaskel
- Technische
Universität Dresden (TUD), Bergstrasse 66, 01069 Dresden, Germany
| | - Irena Senkovska
- Technische
Universität Dresden (TUD), Bergstrasse 66, 01069 Dresden, Germany
| | - Verónica Pino
- Laboratorio
de Materiales para Análisis Químicos (MAT4ALL), Departamento
de Química, Unidad Departamental de Química Analítica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
- Unidad
de Investigación de Bioanalítica y Medioambiente, Instituto
Universitario de Enfermedades Tropicales y Salud Pública de
Canarias, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
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10
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Blanco-Morales V, Silvestre RDLÁ, Hernández-Álvarez E, Donoso-Navarro E, Alegría A, Garcia-Llatas G. Influence of Galactooligosaccharides on the Positive Effect of Plant Sterol-Enriched Beverages on Cardiovascular Risk and Sterol Colon Metabolism. J Agric Food Chem 2022; 70:532-542. [PMID: 35012310 PMCID: PMC9127961 DOI: 10.1021/acs.jafc.1c06120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/20/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
In the present study, the impact of galactooligosaccharide (GOS) addition to a plant sterol (PS)-enriched beverage on the hypocholesterolemic effect and on the bioavailability and colonic metabolization of sterols was evaluated. A crossover trial was undertaken in postmenopausal women who intook a PS-enriched (2 g PS/day) or PS-GOS-enriched beverage (2 g PS/day and 4.3 g GOS/day) for 6 weeks. The presence of GOS did not modify the hypocholesterolemic effect of the PS-enriched beverage (total- and low-density lipoprotein-cholesterol reductions) or sterol bioavailability (increments of serum markers of dietary PS intake and of cholesterol synthesis). The consumption of both beverages led to an increase of sterol and metabolite excretion (with the exception of coprostanol, which decreased) and to slight changes in women's capacities for sterol conversion, regardless of the GOS presence. This study demonstrates the suitability of simultaneous enrichment with PS and GOS in milk-based fruit beverages, considering their hypocholesterolemic effect.
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Affiliation(s)
- Virginia Blanco-Morales
- Nutrition
and Food Science Area, Faculty of Pharmacy, University of Valencia, Avda. Vicent Andrés Estellés s/n,
Burjassot, Valencia 46100, Spain
| | - Ramona de los Ángeles Silvestre
- Clinical
Biochemistry, Hospital Universitario Puerta de Hierro-Majadahonda, Universidad Autónoma de Madrid, C/Manuel de Falla, 1, Madrid 28222, Spain
| | - Elena Hernández-Álvarez
- Clinical
Biochemistry, Hospital Universitario Puerta de Hierro-Majadahonda, Universidad Autónoma de Madrid, C/Manuel de Falla, 1, Madrid 28222, Spain
| | - Encarnación Donoso-Navarro
- Clinical
Biochemistry, Hospital Universitario Puerta de Hierro-Majadahonda, Universidad Autónoma de Madrid, C/Manuel de Falla, 1, Madrid 28222, Spain
| | - Amparo Alegría
- Nutrition
and Food Science Area, Faculty of Pharmacy, University of Valencia, Avda. Vicent Andrés Estellés s/n,
Burjassot, Valencia 46100, Spain
| | - Guadalupe Garcia-Llatas
- Nutrition
and Food Science Area, Faculty of Pharmacy, University of Valencia, Avda. Vicent Andrés Estellés s/n,
Burjassot, Valencia 46100, Spain
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11
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Bolzonello L, Bernal-Texca F, Gerling LG, Ockova J, Collini E, Martorell J, van Hulst NF. Photocurrent-Detected 2D Electronic Spectroscopy Reveals Ultrafast Hole Transfer in Operating PM6/Y6 Organic Solar Cells. J Phys Chem Lett 2021; 12:3983-3988. [PMID: 33877838 PMCID: PMC8154857 DOI: 10.1021/acs.jpclett.1c00822] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 04/14/2021] [Indexed: 05/05/2023]
Abstract
The performance of nonfullerene-acceptor-(NFA)-based organic solar cells is rapidly approaching the efficiency of inorganic cells. The chemical versatility of NFAs extends the light-harvesting range to the infrared, while preserving a considerably high open-circuit-voltage, crucial to achieve power-conversion efficiencies >17%. Such low voltage losses in the charge separation process have been attributed to a low-driving-force and efficient exciton dissociation. Here, we address the nature of the subpicosecond dynamics of electron/hole transfer in PM6/Y6 solar cells. While previous reports focused on active layers only, we developed a photocurrent-detected two-dimensional spectroscopy to follow the charge transfer in fully operating devices. Our measurements reveal an efficient hole-transfer from the Y6-acceptor to the PM6-donor on the subpicosecond time scale. On the contrary, at the same time scale, no electron-transfer is seen from the donor to the acceptor. These findings, putting ultrafast spectroscopy in action on operating optoelectronic devices, provide insight for further enhancing NFA solar cell performance.
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Affiliation(s)
- Luca Bolzonello
- ICFO
- Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona 08860, Spain
| | - Francisco Bernal-Texca
- ICFO
- Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona 08860, Spain
| | - Luis G. Gerling
- ICFO
- Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona 08860, Spain
| | - Jana Ockova
- ICFO
- Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona 08860, Spain
| | - Elisabetta Collini
- Dipartimento
di Scienze Chimiche, Università degli
Studi di Padova, Padova 35131, Italy
| | - Jordi Martorell
- ICFO
- Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona 08860, Spain
- Departament
de Física, Universitat Politècnica
de Catalunya, Terrassa 08222, Spain
| | - Niek F. van Hulst
- ICFO
- Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona 08860, Spain
- ICREA
- Institució Catalana de Recerca i Estudis Avançats, Barcelona 08010, Spain
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12
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García
de Abajo FJ, Di Giulio V. Optical Excitations with Electron Beams: Challenges and Opportunities. ACS Photonics 2021; 8:945-974. [PMID: 35356759 PMCID: PMC8939335 DOI: 10.1021/acsphotonics.0c01950] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 05/20/2023]
Abstract
Free electron beams such as those employed in electron microscopes have evolved into powerful tools to investigate photonic nanostructures with an unrivaled combination of spatial and spectral precision through the analysis of electron energy losses and cathodoluminescence light emission. In combination with ultrafast optics, the emerging field of ultrafast electron microscopy utilizes synchronized femtosecond electron and light pulses that are aimed at the sampled structures, holding the promise to bring simultaneous sub-Å-sub-fs-sub-meV space-time-energy resolution to the study of material and optical-field dynamics. In addition, these advances enable the manipulation of the wave function of individual free electrons in unprecedented ways, opening sound prospects to probe and control quantum excitations at the nanoscale. Here, we provide an overview of photonics research based on free electrons, supplemented by original theoretical insights and discussion of several stimulating challenges and opportunities. In particular, we show that the excitation probability by a single electron is independent of its wave function, apart from a classical average over the transverse beam density profile, whereas the probability for two or more modulated electrons depends on their relative spatial arrangement, thus reflecting the quantum nature of their interactions. We derive first-principles analytical expressions that embody these results and have general validity for arbitrarily shaped electrons and any type of electron-sample interaction. We conclude with some perspectives on various exciting directions that include disruptive approaches to noninvasive spectroscopy and microscopy, the possibility of sampling the nonlinear optical response at the nanoscale, the manipulation of the density matrices associated with free electrons and optical sample modes, and appealing applications in optical modulation of electron beams, all of which could potentially revolutionize the use of free electrons in photonics.
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Affiliation(s)
- F. Javier García
de Abajo
- ICFO-Institut
de Ciencies Fotoniques, The Barcelona Institute
of Science and Technology, 08860 Castelldefels, Barcelona, Spain
- ICREA-Institució
Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010 Barcelona, Spain
- E-mail:
| | - Valerio Di Giulio
- ICFO-Institut
de Ciencies Fotoniques, The Barcelona Institute
of Science and Technology, 08860 Castelldefels, Barcelona, Spain
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13
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Bosch S, Sanchez-Freire E, del Pozo ML, C̆esnik M, Quesada J, Mate DM, Hernández K, Qi Y, Clapés P, Vasić-Rački Đ, Findrik Blažević Z, Berenguer J, Hidalgo A. Thermostability Engineering of a Class II Pyruvate Aldolase from Escherichia coli by in Vivo Folding Interference. ACS Sustain Chem Eng 2021; 9:5430-5436. [PMID: 34589311 PMCID: PMC8461973 DOI: 10.1021/acssuschemeng.1c00699] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/21/2021] [Indexed: 06/13/2023]
Abstract
The use of enzymes in industrial processes is often limited by the unavailability of biocatalysts with prolonged stability. Thermostable enzymes allow increased process temperature and thus higher substrate and product solubility, reuse of expensive biocatalysts, resistance against organic solvents, and better "evolvability" of enzymes. In this work, we have used an activity-independent method for the selection of thermostable variants of any protein in Thermus thermophilus through folding interference at high temperature of a thermostable antibiotic reporter protein at the C-terminus of a fusion protein. To generate a monomeric folding reporter, we have increased the thermostability of the moderately thermostable Hph5 variant of the hygromycin B phosphotransferase from Escherichia coli to meet the method requirements. The final Hph17 variant showed 1.5 °C higher melting temperature (T m) and 3-fold longer half-life at 65 °C compared to parental Hph5, with no changes in the steady-state kinetic parameters. Additionally, we demonstrate the validity of the reporter by stabilizing the 2-keto-3-deoxy-l-rhamnonate aldolase from E. coli (YfaU). The most thermostable multiple-mutated variants thus obtained, YfaU99 and YfaU103, showed increases of 2 and 2.9 °C in T m compared to the wild-type enzyme but severely lower retro-aldol activities (150- and 120-fold, respectively). After segregation of the mutations, the most thermostable single variant, Q107R, showed a T m 8.9 °C higher, a 16-fold improvement in half-life at 60 °C and higher operational stability than the wild-type, without substantial modification of the kinetic parameters.
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Affiliation(s)
- Sandra Bosch
- Department
of Molecular Biology, Center of Molecular Biology “Severo Ochoa”
(UAM-CSIC), Autonomous University of Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Esther Sanchez-Freire
- Department
of Molecular Biology, Center of Molecular Biology “Severo Ochoa”
(UAM-CSIC), Autonomous University of Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
| | - María Luisa del Pozo
- Department
of Molecular Biology, Center of Molecular Biology “Severo Ochoa”
(UAM-CSIC), Autonomous University of Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Morana C̆esnik
- University
of Zagreb, Faculty of Chemical
Engineering and Technology, Savska c. 16, HR-10000 Zagreb, Croatia
| | - Jaime Quesada
- Department
of Molecular Biology, Center of Molecular Biology “Severo Ochoa”
(UAM-CSIC), Autonomous University of Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Diana M. Mate
- Department
of Molecular Biology, Center of Molecular Biology “Severo Ochoa”
(UAM-CSIC), Autonomous University of Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Karel Hernández
- Institute
of Advanced Chemistry of Catalonia, Biotransformation and Bioactive
Molecules Group, Spanish National Research Council (IQAC−CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Yuyin Qi
- Prozomix
Ltd., Station Court, Haltwhistle, NE49 9HN Northumberland, United Kingdom
| | - Pere Clapés
- Institute
of Advanced Chemistry of Catalonia, Biotransformation and Bioactive
Molecules Group, Spanish National Research Council (IQAC−CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Đurđa Vasić-Rački
- University
of Zagreb, Faculty of Chemical
Engineering and Technology, Savska c. 16, HR-10000 Zagreb, Croatia
| | - Zvjezdana Findrik Blažević
- University
of Zagreb, Faculty of Chemical
Engineering and Technology, Savska c. 16, HR-10000 Zagreb, Croatia
| | - José Berenguer
- Department
of Molecular Biology, Center of Molecular Biology “Severo Ochoa”
(UAM-CSIC), Autonomous University of Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
| | - Aurelio Hidalgo
- Department
of Molecular Biology, Center of Molecular Biology “Severo Ochoa”
(UAM-CSIC), Autonomous University of Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain
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14
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Miyazaki Y, Nakano M, Krivchikov AI, Koroyuk OA, Gebbia JF, Cazorla C, Tamarit JL. Low-Temperature Heat Capacity Anomalies in Ordered and Disordered Phases of Normal and Deuterated Thiophene. J Phys Chem Lett 2021; 12:2112-2117. [PMID: 33625859 PMCID: PMC8594864 DOI: 10.1021/acs.jpclett.1c00289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
We measured the specific heat Cp of normal (C4H4S) and deuterated (C4D4S) thiophene in the temperature interval of 1 ≤ T, K ≤ 25. C4H4S exhibits a metastable phase II2 and a stable phase V, both with frozen orientational disorder (OD), whereas C4D4S exhibits a metastable phase II2, which is analogous to the OD phase II2 of C4H4S and a fully ordered stable phase V. Our measurements demonstrate the existence of a large bump in the heat capacity of both stable and metastable C4D4S and C4H4S phases at temperatures of ∼10 K, which significantly departs from the expected Debye temperature behavior of Cp ≈ T3. This case study demonstrates that the identified low-temperature Cp anomaly, typically referred to as a "Boson-peak" in the context of glassy crystals, is not exclusive of disordered materials.
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Affiliation(s)
- Y. Miyazaki
- Research
Center for Thermal and Entropic Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan
| | - M. Nakano
- Research
Center for Thermal and Entropic Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka 560-0043, Osaka, Japan
| | - A. I. Krivchikov
- B.
Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences Ukraine, 47 Science Avenue, Kharkov 61103, Ukraine
| | - O. A. Koroyuk
- B.
Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences Ukraine, 47 Science Avenue, Kharkov 61103, Ukraine
| | - J. F. Gebbia
- Grup
de Caracterizació de Materials, Departament de Física,
EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Eduard Maristany, 10-14, Barcelona 08019, Catalonia, Spain
| | - C. Cazorla
- Departament
de Física, Universitat Politècnica
de Catalunya, Campus
Nord B4−B5, Barcelona E-08034, Catalonia, Spain
| | - J. Ll. Tamarit
- Grup
de Caracterizació de Materials, Departament de Física,
EEBE and Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Eduard Maristany, 10-14, Barcelona 08019, Catalonia, Spain
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