Flexible organic thermoelectrics
David Kiefer, Liyang Yu, Erik Fransson, Andrés Gómez, Daniel Primetzhofer, Aram Amassian, Mariano Campoy-Quiles, and Christian Müller
We show that ternary mixing of semiconducting polymers and dopants embedded in a flexible matrix is an efficient approach to retain flexibility in highly doped organic thermoelectrics.
A sundial that works in the shade
Bernhard Dörling,* Antonio Sánchez-Díaz, Oriol Arteaga, Andrea Veciana, Maria Isabel Alonso, and Mariano Campoy-Quiles,*
Multiple polarization sensitive photodetectors can be prepared on a single substrate by controlling solvent evaporation during the deposition of conjugated polymer films
Synthesis of nanometric ZIF-8 by a sustainable supercritical route
Pedro López-Domínguez, Ana M. López-Periago, Francisco J. Fernández-Porras, Julio Fraile, Gerard Tobias, Concepción Domingo
ZIF-8 nanometric particles are prepared via an environmentally friendly method using supercritical CO2, aimed to minimize the environmental impact of the existing technologies for the synthesis of metal organic frameworks
Light out of silicon
Xavier Cartoixà, Maurizia Palummo, Håkon Ikaros T. Hauge, Erik P. A. M. Bakkers, and Riccardo Rurali
We use state-of-the-art theoretical calculations to show how to design silicon-based materials that can emit light
Chemical mapping of compounds discharged in alkali metal-oxygen batteries by X-ray transmission microscopy
Mara Olivares-Marín, Imanol Landa-Medrano, Andrea Sorrentino, Lorenzo Stievano, Idoia Ruiz de Larramendi, Eva Pereiro, Luis Lezama, Teófilo Rojo, Dino Tonti
A novel analysis method has been developed to observe the spatial arrangement of different compounds forming discharge deposits in cathodes of aprotic metal-oxigen batteries. The images revealed unexpectedly complex architectures
An atomistic interaction model of the water-titanium dioxide interface to explore mechanisms of photocatalysis
H. Hussain, G. Tocci, T.Woolcot, X. Torrelles, C. L. Pang, D. S. Humphrey, C. M. Yim, D. C. Grinter, G. Cabailh, O. Bikondoa, R. Lindsay, J. Zegenhagen, A. Michaelides and G. Thornton
Atomic scale understanding of liquid-water interaction with photocatalytic interfaces by surface X-ray diffraction and local probe techniques
Stray magnetic field competition in superconductor-ferromagnetic hybrid systems
V. Rouco, R. Córdoba, J. M. De Teresa, L. A. Rodríguez, C. Navau, N. Del-Valle, G. Via, A. Sánchez, C. Monton, F. Kronast, X. Obradors, T. Puig and A. Palau
We elucidate the interplay between superconducting-ferromagnetic stray magnetic fields in hybrid systems, formed by an inhomogeneous superconducting film combined with ferromagnetic nano-rods
Unravelling opportunities of solution-derived superconducting nanocomposites
Elena Bartolomé, Pablo Cayado, Eduardo Solano, Cristian Mocuta, Susagna Ricart, Bernat Mundet, Mariona Coll, Jaume Gázquez, Roger Guzman, Alexander Meledin, Gustaaf van Tendeloo, S. Manuel Valvidares, Javier Herrero‐Martín, Pierluigi Gargiani, Eric Pellegrin, Cesar Magén, C.F. Sánchez-Valdés, Alexander Stangl, P. Roura, Anna Palau, Teresa Puig, Xavier Obradors
YBCO superconducting nanocomposites grown by chemical solution deposition method: study of individual defects, formation of hybrid superconducting-ferromagnetic nanocomposites and optimization of oxygenation kinetics
Thermal and electric control of hidden and slow dynamic magnetic states
I. Fina, J. D. Clarkson, A. Quintana, Z. Q. Liu, Y. Lee, J. Kim, C. Frontera, K. Cordero, S. Wisotzki, S. L. Hsu, C. Ko, J. Padilla-Pantoja, X. Martí, F. Macià, F. Sánchez, J. Wu, H. M. Christen, J. T. Heron, D. G. Schlom, S. Salahuddin, N. Kioussis, M. Foerster, L. Aballe, J. Sort, R. Ramesh, and J. Fontcuberta
Magnetic states can be hidden and retrieved either by thermal and electric means at near room temperature in iron-rhodium (FeRh) films
Magnetic crystallography of multiferroic oxides presenting spin-orbit coupling
José Luis Garcia-Muñoz, Arnau Romaguera, François Fauth, Josep Nogués, Martí Gich, Irene Urcelay-Olabarria, Eric Ressouche, Zhaosheng Wang, Yurii Skourski, Vsevolod Ivanov, Yurii F. Popov, Gennadii P. Vorob'ev, Anatolii M. Balbashov, Navid Qureshi, Vassil Skumryev, Alexander Mukhin
Unveiled new functional ordered magnetic phases at high temperatures or under external magnetic fields in frustrated multiferroic oxides using neutron and synchrotron techniques
Direct piezoelectric force microscopy: a new reliable scanning probe microscopy mode to study ferroelectrics at the nanoscale
A.Gomez, M. Gich, A. Carretero-Genevrier, T. Puig, X. Obradors
Direct Piezoelectric Force Microscopy is a new approach to study ferroelectrics with nanoscale resolution based on the direct piezoelectric effect, providing a stable, reliable and quantitative characterization platform
Competing structural phases in quantum confined perovskites
J. Gazquez, M. Stengel, R. Mishra, M. Scigaj, M. Varela, M. A. Roldan, J. Fontcuberta, F. Sánchez, and G. Herranz
Scanning transmission electron microscopy (STEM) and first-principle models demonstrate the competition between structural phases intertwined with transport properties in a quantum-confined perovskite system
Magnetism goes surfing
Michael Foerster,* Ferran Macià,* Nahuel Statuto, Simone Finizio, Alberto Hernández-Mínguez, Sergi Lendínez, Paulo Santos, Josep Fontcuberta, Joan Manel Hernàndez, Mathias Klaui, and Lucia Aballe
The article presents a direct imaging of the simultaneous evolution of both strain and magnetization dynamics of nanostructures at the picosecond time scale
Novel functionalities at ferroic domain walls
Andrea Schiaffino, and Massimiliano Stengel, J. A. Mundy, J. Schaab, Y. Kumagai, A. Cano, I. P. Krug, D. M. Gottlob, H. Doğanay, M. E. Holtz, R. Held, Z. Yan, E. Bourret, C. M. Schneider, D. G. Schlom, D. A. Muller, R. Ramesh, N. A. Spaldin & D. Meier
Our studies are based on first-principles density-functional theory calculations, which we combine with continuum models in a "multiscale" fashion to bridge the gap between the microscopic and macroscopic worlds
An organic miniature spectrophotometer
Zheng Tang, Zaifei Ma, Antonio Sánchez-Díaz, Sascha Ullbrich, Yuan Liu, Bernhard Siegmund, Andreas Mischok, Karl Leo, Mariano Campoy-Quiles, Weiwei Li, and Koen Vandewal
Infrared fotodetectors of tunable spectral response are fabricated by enhancing the charge transfer absorption of an organic blend in an optical cavity resonator
Control of the device performance in organic field-effect transistors prepared by solution-shearing: polymorphism and surface doping
Sergi Galindo, Qiaoming Zhang, Adrián Tamayo, Francesca Leonardi, Stefano Casalini, Marta Mas-Torrent
The influence of polymorphism on the performance of organic field-effect transistors is investigated. Further, the surface doping of these devices is achieved employing an aqueous solution of Hg2+ cations
Boron clusters as fluorescence-tuning moieties in single molecules and octasilsesquioxane-based hybrids
Justo Cabrera-González, Albert Ferrer-Ugalde, Francesc Teixidor, Emilio José Juárez-Pérez, Mahdi Chaari, Jose María Montenegro, Santanu Bhattacharyya, Reijo Sillanpää, Matti Haukka, Ezequiel Pérez-Inestrosa, Johannes Gierschner, Rosario Núñez
The studies presented here are aimed to demonstrate the role of carborane groups to tailor the luminescence properties of many fluorophores, and the potential of these clusters to prepare fluorescent thermally-stable nanohybrids
A faithful scanning probe microscopy strategy to draw at the molecular scale the landscape of domain boundaries in organic thin films
Ana Pérez-Rodríguez, Esther Barrena, Antón Fernández, Enrico Gnecco and Carmen Ocal
Stablishing structure–property relationships in organic devices requires accurately defining the thin-film crystallographic details. An unconventional mode of scanning force microscopy called transverse shear microscopy (TSM) becomes the unbeatable tool to reveal grain boundaries with nanometer resolution
Organic radicals as active components of molecular electronic devices: wires and rectifiers
C. Franco, P. Mayorga Burrezo, V. Lloveras, R. Caballero, I. Alcón, S. Bromley, M. Mas-Torrent, F. Langa, J.T. López Navarrete, Manuel Souto, Li Yuan, Dayana C. Morales, Li Jiang, Imma Ratera, Christian A. Nijhuis, C. Rovira, J. Casado, J. Veciana
Charge transport mechanisms through organic molecules: a fundamental issue for the development of future electronic devices based on molecules, such as wires, rectifiers, switches, or transistors.
Revisiting room-temperature ferroelectricity claimed for organic charge-transfer crystals formed by an electron acceptor and three different donors
Gabriele D’Avino, Manuel Souto, Matteo Masino, Jonas K. H. Fischer, Imma Ratera, Xavier Fontrodona, Gianluca Giovannetti, Matthieu J. Verstraete, Anna Painelli, Peter Lunkenheimer, Jaume Veciana4 and Alberto Girlando
The presence of ferroelectricity at room temperature in organic charge transfer crystals, generated by the LASO supramolecular technique, previously published by a team led by J.F. Stoddart (Nobel Prize for Chemistry 2016) and S.I. Stupp (Northwestern U.) is disputed
Electrostimulation with iridium oxide-graphene hybrid electrodes for neural growth and repair
M. P. Lichtenstein, E. Pérez, L. Ballesteros, C. Suñol, N. Casañ-Pastor
Electrostimulation using direct current influences neural growth and repair. Recently developed iridium oxide-graphene nanostructured hybrid materials yield to neural repair in short periods of time
Synthesis of desert-rose coordination polymers nanosheets in supercritical CO2
Nuria Portoles-Gil, Ricard Parra-Aliana, Ángel Álvarez-Larena, Concepción Domingo, José A. Ayllón and Ana López-Periago
In this work we used supercritical CO2 for the synthesis of Cu, Ni and Mn diethyloxaloacetate based 1D coordination polymers crystallized in the form of nanosheets, formed by layers of 15-40 nm thickness
Evaluation of inorganic nanoparticles in the nematode Caenorhabditis elegans
Laura Gonzalez-Moragas, Anna Roig, Anna Laromaine, Siming Yu, Núria Benseny-Cases, Pascal Berto, Clara Vilches, Romain Quidant, Stephen Stürzenbaum, Androniki Kolovou, Rachel Santarella-Mellwig, Yannick Schwab, Laura L. Maurer, Victoria M. Harms, Joel N. Meyer
Genetic analysis and advanced imaging techniques have been applied to evaluate inorganic nanoparticles for biomedical applications in the model organism Caenorhabditis elegans, revealing composition-, coating-, size- and dose-dependent effects.
Core-Canopy Quantum Dots: Trapped Ions in Voids Induce Kinetic Fluorescence Switching
Arpita Saha, Elena Oleshkevich, Clara Viñas and Francesc Teixidor
The object of the study was to incorporate hollow spherical carboranes as capping agent for quantum dots instead of linear chains of carbon using colloidal synthetic route and this led us to get the unique property of Kinetic Fluorescence Switching
Mercaptocarboranyl-capped gold nanoparticles as artificial ion transporter across biological membranes
Marcin P. Grzelczak, Stephen P. Danks, Robert C. Klipp, Domagoj Belic, Adnana Zaulet, Casper Kunstmann-Olsen, Dan F. Bradley, Tatsuya Tsukuda, Clara Viñas, Francesc Teixidor, Jonathan J. Abramson, and Mathias Brust
We report that gold nanoparticles protected by hollow sphere carborane-based molecules can penetrate phospholipid bilayer membranes and act as alkali-ion specific transporters
Nanocapsules for targeted radiotherapy: paving the way for an optimal production
Aritz Perez Ruiz de Garibay, Cinzia Spinato, Rebecca Klippstein, Maxime Bourgognon, Markus Martincic, Elzbieta Pach, Belén Ballesteros, Cécilia Ménard-Moyon, Khuloud T. Al-Jamal, Alberto Bianco, Magdalena Kierkowicz, Jose M. González-Domínguez, Stefania Sandoval, Tatiana Da Ros and Gerard Tobias
An environmentally friendly protocol has been engineered for the production of nanocapsules (filled carbon nanotubes), which immunological profile after antibody-functionalization reveals their suitability for future testing in the field of targeted radiotherapy
Nanostructured molecular liquids with application in nanomedicine, prepared using compressed CO2
N. Grimaldi, L. Ferrer-Tassies, A. Ardizzone, P. E. Rojas, S. Stehle, X. Liu, D.A. Silbaugh, A. Cordoba, S. Sala, D. Piña, S. Luelsdorf, R.Schweins, B. Sui, M. Anzola, T. Liu, B.A. Korgel, K. D. Belfield, A. Triolo, A. S. Braeuer, J. Faraudo, J. Veciana, N. Ventosa
We use compresses CO2 to prepare compressible and pressure responsive nanostructured fluids and fluorescent organic nanoparticles for bioimaging applications
Glioma-cell-targeting therapy approach by using small-molecule kinase-inhibitors-loaded boron cluster as hybrid drugs
Marcos Couto, Ignacio Mastandrea, Mauricio Cabrera, Pablo Cabral, Francesc Teixidor, Clara Viñas and Hugo Cerecetto
The aim of the study was the synthesis of anilinoquinazoline-icosahedral borane hybrids to be used as boron carriers to enrich glioma cancer cells with boron atoms for BNCT cancer therapy
