Person: Ortiz García, María Josefa
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First Name
María Josefa
Last Name
Ortiz García
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Químicas
Department
Química Orgánica
Area
Química Orgánica
Identifiers
5 results
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Now showing 1 - 5 of 5
Item Rational molecular design enhancing the photonic performance of red-emitting perylene bisimide dyes(Physical Chemistry Chemical Physics, 2017) Avellanal Zaballa, Edurne; Durán Sampedro, Gonzalo; Prieto Castañeda, Alejandro; Rodríguez Agarrabeitia, Antonia; García Moreno, Inmaculada; López Arbeloa, Íñigo María; Bañuelos Prieto, Jorge; Ortiz García, María JosefaWe report the synthesis of novel multichromophoric organic architectures, where perylene red is decorated with BODIPY and/or hydroxycoumarin dyes acting as light harvesters and energy donors. The computationally-aided photophysical study of these molecular assemblies reveals a broadband absorption which, regardless of the excitation wavelength, leads solely to a bright red-edge emission from perylene bisimide after efficient intramolecular energy transfer hops. The increase of the absorbance of these molecular antennas at key pumping wavelengths enhances the laser action of the commercial perylene red. The herein applied strategy based on energy transfer dye lasers should boost the use of perylene-based dyes as active media for red-emitting lasers.Item Preparation of dipyrrins from F-BODIPYs by treatment with methanesulfonic acids(RSC Advances, 2015) Urieta Mora, Javier; Lora Maroto, Beatriz; Moreno Jiménez, Florencio; Rodríguez Agarrabeitia, Antonia; Ortiz García, María Josefa; Moya Cerero, Santiago De LaAn alternative metal-free soft procedure for the preparation of dipyrrins from F-BODIPYs is reported. The new method makes possible to obtain certain dipyrrin derivatives that were unaccessible from F-BODIPYs to date. To demonstrate the ability of the new procedure, dipyrrins having highly reactive groups, such as chloro, cyano or acetoxyl, have been easily obtained from the corresponding F-BODIPY, which shows the synthetic utility of the reported methodology.Item Controlling Vilsmeier-Haack processes in meso-methylBODIPYs: A new way to modulate finely photophysical properties in boron dipyrromethenes(Dyes and Pigments, 2017) Palao Utiel, Eduardo; Montalvillo Jiménez, Laura; Esnal Martínez, Ixone; Prieto Montero, Ruth; Rodríguez Agarrabeitia, Antonia; García Moreno, Inmaculada; Bañuelos Prieto, Jorge; López Arbeloa, Íñigo María; Moya Cerero, Santiago De La; Ortiz García, María JosefaIn the herein work we report the fine and selective control of competitive processes when submitting meso-methylBODIPYs to Vilsmeier-Haack reaction conditions. These competitive processes generate BODIPYs with opposed photophysical properties, from highly fluorescent dyes enabling laser emission, to non-fluorescent singlet-oxygen photosensitizers. The synthetic control is exerted on the basis of the structure of the starting BODIPY, as well as the electrophilic character (hard or soft) of the formylating reagent.Item Circularly Polarized Luminescence from Simple Organic Molecules(Chemistry: a european journal, 2015) Márquez Sánchez-Carnerero, Esther María; Rodríguez Agarrabeitia, Antonia; Moreno Jiménez, Florencio; Lora Maroto, Beatriz; Muller, Gilles; Ortiz García, María Josefa; Moya Cerero, Santiago De LaThis article aims to show the identity of “circularly polarized luminescent active simple organic molecules” as a new concept in organic chemistry due to the potential interest of these molecules, as availed by the exponentially growing number of research articles related to them. In particular, it describes and highlights the interest and difficulty in developing chiral simple (small and non-aggregated) organic molecules able to emit left- or right-circularly polarized light efficiently, the efforts realized up to now to reach this challenging objective, and the most significant milestones achieved to date. General guidelines for the preparation of these interesting molecules are also presented.Item Exploring the Application of the Negishi Reaction of HaloBODIPYs: Generality, Regioselectivity, and Synthetic Utility in the Development of BODIPY Laser Dyes(Journal of Organic Chemistry, 2016) Palao Utiel, Eduardo; Durán Sampedro, Gonzalo; Moya Cerero, Santiago De La; Madrid, Miriam; García López, Carmen; Rodríguez Agarrabeitia, Antonia; Verbelen, Bram; Dehaen, Wim; Boens, Nöel; Ortiz García, María JosefaThe generality of the palladium-catalyzed C–C coupling Negishi reaction when applied to haloBODIPYs is demonstrated on the basis of selected starting BODIPYs, including polyhalogenated and/or asymmetrical systems, and organozinc reagents. This reaction is an interesting synthetic tool in BODIPY chemistry, mainly because it allows a valuable regioselective postfunctionalization of BODIPY chromophores with different functional groups. In this way, functional patterns that are difficult to obtain by other procedures (e.g., asymmetrically functionalized BODIPYs involving halogenated positions) can now be made. The regioselectivity is achieved by controlling the reaction conditions and is based on almost-general reactivity preferences, and the nature of the involved halogens and their positions. This ability is exemplified by the preparation of a series of new BODIPY dyes with unprecedented substitution patterns allowing noticeable lasing properties.