Resultados de investigación

14 pages. -- PDF includes: 1 Methods. -- 1.1 Synthesis of the molecular precursors. -- 1.2 Sample preparation and on-surface synthesis. -- 1.3 Experimental details on the imaging method. -- 1.4 Ab-initio Calculations and quantum electron transport simulations. -- 2 Analysis of interpolymer distance. -- 3 Electronic properties of Ph-7-13-AGNR. -- 4 Surface-induced planarization of the peripheral phenyl ring in isolated ribbons., Recent advances on surface-assisted synthesis have demonstrated that arrays of nanometer wide graphene nanoribbons can be laterally coupled with atomic precision to give rise to a highly anisotropic nanoporous graphene structure. Electronically, this graphene nanoarchitecture can be conceived as a set of weakly coupled semiconducting 1D nanochannels with electron propagation characterized by substantial interchannel quantum interferences. Here, we report the synthesis of a new nanoporous graphene structure where the interribbon electronic coupling can be controlled by the different degrees of freedom provided by phenylene bridges that couple the conducting channels. This versatility arises from the multiplicity of phenylene cross-coupling configurations, which provides a robust chemical knob, and from the interphenyl twist angle that acts as a fine-tunable knob. The twist angle is significantly altered by the interaction with the substrate, as confirmed by a combined bond-resolved scanning tunneling microscopy (STM) and ab initio analysis, and should accordingly be addressable by other external stimuli. Electron propagation simulations demonstrate the capability of either switching on/off or modulating the interribbon coupling by the corresponding use of the chemical or the conformational knob. Molecular bridges therefore emerge as efficient tools to engineer quantum transport and anisotropy in carbon-based 2D nanoarchitectures., Peer reviewed

17 pages. -- 1. Experimental Section. -- 2. Supplementary Table S1-S2 and Figs. S1-S17. -- 3. References, Peer reviewed

Description of methods used for collection-generation of data: Refractive index measurements: data was obtained using an Abbe refractometer NAR-1T. The temperature was controled with a recirculating thermobath system. 1-bromonaphtalene was used as inmersion oil for PVA film. Transmittance measurements: data was obtained using a Jasco U-770 or an Agilent Cary 60 spectrophotometers. The temperature of the samples was controlled with a Peltier thermostated cell holder, with an external air heating gun (output air temperature of 55 °C), or with a custom-made holder (Sapphire 360) in which the sample of interest was kept between two sapphire windows attached to two cupper sheets, which were connected to a temperature controller. Differential scanning calorimetry measurements: data was obtained using a TA-instruments Q20. A temperature ramp rate of 10 °C min-1 was used for all the samples. Sample irradiation: Irradiation was performed with: (a) a cw laser (irradiation wavelength 830 nm), whose power was modulated using different neutral density filtersand measured with a potentiometer; (b) a solar simulator (100 mW cm-2) placed at 23 cm from the tested material, whose irradiation power was measured with a potenciometer; or (c) sunlight. Temperature measurements on samples: Temperatures were measured with: (a) a thermocouple; or (b)a thermal IR probe. Voltage application to samples: The voltage was applied by means of a power supplier and both the voltage and the current were displaid in the power supplier screen. Electron microscopy data: TEM images were acquired with a TEM JEM-1400 (120 kV) microscope. SEM images were acquired with a FEI Quanta 650 ESEM microscope applying a 5 kV voltage. Size histograms were obtained from the microscopy images using ImageJ software. Stress-strain curves: The tensile test of the films was conducted by means of an Instron 3366 instrument at a speed of 25 mm min-1 and the specimens used had a thickness of 0.2 mm and a width of 15 mm., The dataset shows the experimental data provided in the main text and supporting information of the article "Multistimuli-responsive smart windows based on paraffin-polymer composites": thermal variation of refractive index, thermal and time variation of transmission spectra, electron microscopy images, differential scanning calorymetry thermograms, variation of transmission spectra with light irradiation and voltage application, temperature variation into house models upon sunlight irradiation., Funding sources: Funding agency: MINECO/FEDER. Project number: (RTI2018-098027-B-C21, PID2019-106171RB-I00 and PDC2022-133368-I00). Funding agency: Generalitat de Catalunya. Project number: 2017 SGR00465 and 2021 PROD 00190, Fig 2 Folder, Fig 3 folder, Fig 5 folder, Fig 6 folder, Fig 7 folder, Supporting information folder, Peer reviewed

38 pages. -- 1. Thermal Properties. -- 2. Cyclic Voltammetry. -- 3. Optical Characterization. -- 4. Energy Level Diagram. -- 5. Self-Assembly. -- 6. Water Contact Angle Measurements. -- 7. XPS Measurements. -- 8. Perovskite Solar Cells. -- 9. Surface Recombination Velocity Measurements. -- 10. Drift-Diffusion Simulations. -- 11. Shelf-Life Stability. -- 12. Synthesis. -- 12.1. Naphthalene monoimides 2a-2d. -- 12.2. Naphthalene diimides 3a-3d. -- 13. References, Electron-transport-layer-free (ETL-free) perovskite solar cells (PSCs) show great promise for commercialization due to their simple design and ease of fabrication. However, the interface between the transparent conductive oxides such as indium-doped tin oxide (ITO) and the perovskite is not optimal due to differences in their work functions, surface defects, and wettability of the substrates. Surface modification of ITO through self-assembled monolayers (SAMs) to get ITO/SAM charge selective layers has shown great improvement in device performance in recent years, but little emphasis has been put on the stability of these devices. Here, we address this gap by introducing a series of newly synthesized naphthalene-imide derivatives which self-assemble at the interface between ITO and the perovskite interface and study their impact on the thermal stability of triple-cation PSCs. The chemical and thermal stabilities of the naphthalene-imide SAMs help improve the thermal stability of the devices, reaching T80 lifetimes exceeding 800 h for devices containing a pyridine-functionalized naphthalene diimide carboxylic acid at 85 °C in air. In addition, all SAMs improve the stabilized power output of the devices with respect to ITO-only reference devices. Drift-diffusion simulations reveal the strong influence of the ITO work function on the efficiency in ETL-free devices, and a work function reduction of 0.2 eV could improve efficiencies by over 30%. The functional diversity of naphthalene imides coupled with the ease of SAM deposition opens a pathway for stable, high-performing PSCs based on electron selective monolayers., Peer reviewed

General information for the experimental section, structural analysis of complexes 2, 3, 4, 8, 9, 10, and 11; NMR spectra; computational details; energies of calculated structures; AICD plots; NICS and NICSxx scans; and selected π molecular orbitals (PDF) Atomic coordinates of optimized complexes (XYZ)., Peer reviewed

Inscripción sobre una cartela de piedra empotrada en el muro, en la fachada occidental del convento. texto en castellano dispuesto en dos columnas en la cartela, con cuatro conchas en los ángulos y una cruz de la Orden de Santiago en el centro. La segunda línea de la columna izquierda presenta algunos daños, que impiden casi completamente la lectura del texto. La inscripción conmemora el accidente que tuvo lugar durante las obras de construcción del patio y ala occidental del convento., CSIC. Proyecto intramural: “Epigrafía latina inédita de los siglos XV al XVIII en monumentos civiles y eclesiásticos de la provincia de Cuenca (2006-2007). Referencia: 2006 | 0| 011., Peer reviewed

Inscripción realizada mediante la perforación en la espada que sostiene en su mano la figura que representa al apóstol Santiago y que corona la fachada sur del convento., CSIC. Proyecto intramural: “Epigrafía latina inédita de los siglos XV al XVIII en monumentos civiles y eclesiásticos de la provincia de Cuenca (2006-2007). Referencia: 2006 | 0| 011., Peer reviewed

Son dos inscripciones sobre piedra que se encuentran en la fachada oriental de la iglesia, en dos cartelas de piedra a ambos lados de la puerta, bajo sendas hornacinas. Texto en latín reelaborado a partir de citas bíblicas. la inscripción 1 contiene una reelaboración de 1 Pedro 2:4-5; la inscripción 2 texto de 1 Corintios 3:11. la hierba que ha nacido sobre la piedra impide leer algunas letras, pero se pueden reconocer fácilmente., CSIC. Proyecto intramural: “Epigrafía latina inédita de los siglos XV al XVIII en monumentos civiles y eclesiásticos de la provincia de Cuenca (2006-2007). Referencia: 2006 | 0| 011., Peer reviewed

Cuadro de gran tamaño con una escena de la batalla de Clavijo. Tiene dos inscripciones: una (Inscripción 2) en el extremo inferior, en latín, con el pasaje de Josué 10:12-13, referido a la batalla de Israel contra los amorreos: el sol y la luna se detuvieron hasta que Israel se vengó de sus enemigos. Situación parecida, según la leyenda, se dio en la batalla de Clavijo, que es la que se representa en esta escena. La Virgen escuchó la súplica de los cristianos y detuvo por unas horas el Sol, consiguiendo con ello los cristianos ganar la batalla a los moros. Ésta es, precisamente, la otra inscripción (Inscripción 1) que encontramos en el cuadro, en una filacteria que ocupa el centro de la escena. En algunos lugares, se venera a la Virgen de Tentudía el mismo día que el apóstol Santiago. El cuadro se encuentra en la nave de la iglesia del Convento, en el lado de la epístola., CSIC. Proyecto intramural: “Epigrafía latina inédita de los siglos XV al XVIII en monumentos civiles y eclesiásticos de la provincia de Cuenca (2006-2007). Referencia: 2006 | 0| 011., Peer reviewed

Inscripción que forma parte de un escudo situado sobre el arco de la "Puerta del Agua". Únicamente contiene una fecha., CSIC. Proyecto intramural: “Epigrafía latina inédita de los siglos XV al XVIII en monumentos civiles y eclesiásticos de la provincia de Cuenca (2006-2007). Referencia: 2006 | 0| 011., Peer reviewed