Person:
Durán Sampedro, Gonzalo

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First Name
Gonzalo
Last Name
Durán Sampedro
URI
https://hdl.handle.net/20.500.14352/106505
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Químicas
Department
Química Orgánica
Area
Química Orgánica
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2012 - 20154
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Author: Bañuelos, Jorge ×

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Now showing 1 - 4 of 4
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    Carboxylates versus Fluorines: Boosting the Emission Properties of Commercial BODIPYs in Liquid and Solid Media
    (Advanced Functional Materials, 2013) Durán Sampedro, Gonzalo; Rodríguez Agarrabeitia, Antonia; Cerdán, Luis; Pérez Ojeda, María Eugenia; Costela, Angel; García‐Moreno, Inmaculada; Esnal, Ixone; Bañuelos, Jorge; López Arbeloa, Iñigo; Ortiz García, María Josefa
    A new and facile strategy for the development of photonic materials is presented that fufi lls the conditions of being effi cient, stable, and tunable laser emitters over the visible region of spectrum, with the possibility of being easily processable and cost-effective. This approach uses poly(methyl methacrylate) (PMMA) as a host for new dyes with improved effi ciency and photostability synthesized. Using a simple protocol, fl uorine atoms in the commercial (4,4-difl uoro-4-bora-3a,4a-diaza-s-indacene) ( F -BODIPY) by carboxylate groups. The new O -BODIPYs exhibit enhanced optical properties and laser behavior both in the liquid and solid phases compared to their commercial analogues. Lasing effi ciencies up to 2.6 times higher than those recorded for the commercial dyes are registered with high photostabilities since the laser output remain at 80% of the initial value after 100 000 pump pulses in the same position of the sample at a repetition rate of 30 Hz; the corresponding commercial dye entirely loses its laser action after only 12 000 pump pulses. Distributed feedback laser emission is demonstrated with organic fi lms incorporating new O -BODIPYs deposited onto quartz substrates engraved with appropriated periodical structures. These dyes exhibit laser thresholds up to two times lower than those of the corresponding parent dyes with lasing intensities up to one order of magnitude higher.
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    Increased laser action in commercial dyes from fluorination regardless of their skeleton
    (Laser Physics Letters, 2014) Durán Sampedro, Gonzalo; Rodríguez Agarrabeitia, Antonia; Arbeloa Lopez, Teresa; Bañuelos, Jorge; López Arbeloa, Iñigo; Chiara, José Luis; Garcia Moreno, Inmaculada; Ortiz García, María Josefa
    The direct and simple fluorination of representative organic laser dyes with emission covering the entire visible spectrum, from blue to red, including Coumarin 460, Pyrromethene 546, Rhodamine 6G and Perylene Red, enhances laser efficiencies by a factor up to 1.8 with respect to the corresponding non-fluorinated parent dyes. More importantly, fluorination also significantly enhances the photostability of the dyes, even under drastic laser pumping conditions.
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    An asymmetric BODIPY triad with panchromatic absorption for high-performance red-edge laser emission
    (Chemmical Communications, 2015) Durán Sampedro, Gonzalo; Rodríguez Agarrabeitia, Antonia; Garcia-Moreno, Inmaculada ; Gartzia-Rivero, Leire; Bañuelos, Jorge; López-Arbeloa, Ínigo; Ortiz García, María Josefa; Moya Cerero, Santiago De La
    A rational design of an unprecedented asym. cassette triad based entirely on BODIPY chromophores allows efficient light harvesting over the UV-vis spectral region, leading to a bright and stable red-edge laser emission via efficient energy-transfer processes.
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    Chlorinated BODIPYs: Surprisingly Efficient and Highly Photostable Laser Dyes
    (European Journal of Organic Chemistry, 2012) Durán Sampedro, Gonzalo; Rodríguez Agarrabeitia, Antonia; García Moreno, Inmaculada; Costela, Angel; Bañuelos, Jorge; Arbeloa, Teresa; López Arbeloa, Iñigo; Chiara, Jose Luis; Ortiz García, María Josefa
    A series of mono‐ to hexachlorinated BODIPY dyes have been prepared in good to excellent yields through the use of chlorosuccinimide as an inexpensive halogenating reagent. This library of chlorinated dyes allowed analysis in detail, from the experimental and theoretical points of view, of the dependency of the photophysical and optical properties of the dyes on the number and positions of the chlorine substituents on their BODIPY cores. Quantum mechanical calculations predict the regioselectivity of the halogenation reaction and explain why some positions are less prone to chlorination. The new chlorinated BODIPYs exhibit enhanced laser action with respect to their non‐halogenated analogues, both in liquid solution and in the solid phase. In addition, chlorination is a facile and essentially costless protocol for overcoming important shortcomings exhibited by commercially available BODIPYs, which should favor their practical applications in optical and sensing fields.