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11 p, 809.8 KB |
Color-Tunable White-Light-Emitting Materials Based on Liquid-Filled Capsules and Thermally Responsive Dyes
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Vázquez Mera, Nuria Alexandra (Institut Català de Nanociència i Nanotecnologia) ;
Otaegui Rabanal, Jaume R. (Institut Català de Nanociència i Nanotecnologia) ;
Sánchez Sánchez, Rafael (Universitat Autònoma de Barcelona. Departament de Química) ;
Prats Álvarez, Gemma (Universitat Autònoma de Barcelona. Departament de Química) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química) ;
Ruiz Molina, Daniel (Institut Català de Nanociència i Nanotecnologia) ;
Roscini, Claudio (Institut Català de Nanociència i Nanotecnologia) ;
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Color-tunable white-light-emitting materials are currently attracting much attention because of their potential applications in artificial lighting, sensing, and imaging. However, preparation of these systems from organic emitters is often cumbersome due to the interchromophoric interactions occurring upon solvent drying in the final solid materials, which can be hardly predicted and may lead to detrimental effects. [...]
2019 -  10.1021/acsami.9b02169
ACS applied materials and interfaces, Vol. 11, Issue 19 (May 2019) , p. 17751-17758
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2.
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18 p, 2.6 MB |
Electrochromic self-electrostabilized polypyrrole films doped with surfactant and Azo Dye
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Bayat, Maryam (Isfahan University of Technology. Department of Textile Engineering) ;
Izadan, Hossein (Isfahan University of Technology. Department of Textile Engineering) ;
Molina García, Brenda Guadalupe (Universitat Politècnica de Catalunya. Department d'Enginyeria Química) ;
Sánchez Jiménez, Margarita (Universitat Politècnica de Catalunya. Departament d'Enginyeria Química) ;
Santiago, Sara (Universitat Autònoma de Barcelona. Departament de Química) ;
Semnani, Dariush (Isfahan University of Technology. Department of Textile Engineering) ;
Dinari, Mohammad (Isfahan University of Technology. Department of Chemistry) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química) ;
Estrany coda, Francesc (Universitat Politècnica de Catalunya. Department d'Enginyeria Química) ;
Alemán, Carlos (Barcelona Research Center for Multiscale Science and Engineering)
Two azo dyes, acid red 1 (AR1) and acid red 18 (AR18), were used alone or in combination with sodium dodecyl sulfate (SDS) for the electropolymerization of a pyrrole monomer. Polypyrrole (PPy) showed higher redox capacity when SDS and AR18 were used simultaneously as dopant agents (PPy/AR18-SDS) than when the conducting polymer was produced in the presence of SDS, AR18, AR1, or an AR1/SDS mixture. [...]
2019 - 10.3390/polym11111757
Polymers, Vol. 11, issue 11 (Nov. 2019) , art. 1757
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3.
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7 p, 1.1 MB |
An all-photonic full color RGB system based on molecular photoswitches
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Naren, Gaowa (Chalmers University of Technology. Chemistry and Chemical Engineering) ;
Hsu, Chien-Wei (Chalmers University of Technology. Chemistry and Chemical Engineering) ;
Li, Shiming (Chalmers University of Technology. Chemistry and Chemical Engineering) ;
Morimoto, Masakazu (Rikkyo University Nishi-Ikebukuro. Department of Chemistry and Research Center for Smart Molecules) ;
Tang, Sicheng (University of Miami. Department of Chemistry) ;
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química) ;
Irie, Masahiro (Rikkyo University Nishi-Ikebukuro. Department of Chemistry and Research Center for Smart Molecules) ;
Raymo, Françisco M. (University of Miami. Department of Chemistry) ;
Sundén, Henrik (Chalmers University of Technology. Chemistry and Chemical Engineering) ;
Andréasson, Joakim (Chalmers University of Technology. Chemistry and Chemical Engineering)
On-command changes in the emission color of functional materials is a sought-after property in many contexts. Of particular interest are systems using light as the external trigger to induce the color changes. [...]
2019 - 10.1038/s41467-019-11885-4
Nature communications, Vol. 10 (September 2019) , art. 3996
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4.
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4 p, 1.7 MB |
Enhanced photocatalytic activity of gold nanoparticles driven by supramolecular host-guest chemistry
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Padilla Barriento, Marc (Universitat Autònoma de Barcelona. Departament de Química) ;
Peccati, Francesca (Universitat Autònoma de Barcelona. Departament de Química) ;
Bourdelande, J. L. (José Luis) (Universitat Autònoma de Barcelona. Departament de Química) ;
Solans Monfort, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química) ;
Sodupe Roure, Mariona (Universitat Autònoma de Barcelona. Departament de Química) ;
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Functionalization of gold nanoparticles with supramolecular hosts allows their plasmon-based photocatalytic activity to be enhanced. This is mainly ascribed to the formation of labile host-guest complexes with the reagent molecules on the metal surface, thus promoting nanoparticle-substrate approximation without interfering with the light-induced catalytic process.
2017 - 10.1039/c6cc09600j
Chemical communications, Vol. 53, Issue 13 (February 2017) , p. 2126-2129
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9 p, 968.1 KB |
Electrocarboxylation of 1-chloro-(4-isobutylphenyl)ethane with a silver cathode in ionic liquids : an environmentally benign and efficient way to synthesize Ibuprofen
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Mena, Silvia (Universitat Autònoma de Barcelona. Departament de Química) ;
Sánchez, Jessica (Universitat Autònoma de Barcelona. Departament de Química) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química)
Electrocarboxylation of organic halides is one of the most widely used approaches for valorising CO. In this manuscript, we report a new greener synthetic route for synthesising 2-(4-isobutylphenyl)propanoic acid, Ibuprofen, one of the most popular non-steroidal anti-inflammatory drugs (NSAIDs). [...]
2019 - 10.1039/c9ra01781j
RSC advances, Vol. 9, Issue 26 (2019) , p. 15115-15123
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6 p, 487.8 KB |
Formation of cyclobutane thymine dimers by tiaprofenic acid and its photoproducts : approach to the photosensitizer triplet state energy limit value
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Michaud, Sandra (Université Paul Sabatier) ;
Bordeau, Guillaume (Université Paul Sabatier) ;
Sartor, Valérie (Université Paul Sabatier) ;
Bourdelande, J. L. (José Luis) (Universitat Autònoma de Barcelona. Departament de Química) ;
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química) ;
Chouini-Lalanne, Nadia (Université Paul Sabatier)
Cyclobutane thymine dimers, the major photoproducts produced in UV-irradiated DNA, are the main causative agents for mutagenesis and skin cancer. This lesion can also be initiated under UVA radiation, involving triplet-triplet energy transfer mechanism from a photosensitizer to the thymine nucleobase. [...]
2015 - 10.1039/c5ra11869g
RSC advances, Vol. 5, Issue 84 (2015) , p. 68595-68600
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12 p, 2.2 MB |
Electrocatalytic processes for the valorization of CO2 : Synthesis of cyanobenzoic acid using eco-friendly strategies
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Mena, Silvia (Universitat Autònoma de Barcelona. Departament de Química) ;
Gallardo Garcia, Iluminada (Universitat Autònoma de Barcelona. Departament de Química) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química)
Carbon dioxide (CO) is a known greenhouse gas, and is the most important contributor to global warming. Therefore, one of the main challenges is to either eliminate or reuse it through the synthesis of value-added products, such as carboxylated derivatives. [...]
2019 - 10.3390/catal9050413
Catalysts, Vol. 9, Núm. 5 (May 2019) , art. 413
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9.
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12 p, 4.9 MB |
Fluorescent "turn-Off" detection of fluoride and cyanide ions using zwitterionic spirocyclic meisenheimer compounds
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Benet, Marina (Universitat Autònoma de Barcelona. Departament de Química) ;
Villabona Pedemonte, Marc (Universitat Autònoma de Barcelona. Departament de Química) ;
Llavina, Carles (Universitat Autònoma de Barcelona. Departament de Química) ;
Mena, Silvia (Universitat Autònoma de Barcelona. Departament de Química) ;
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química) ;
Al-Kaysi, Rabih O. (King Abdullah International Medical Research Center. Riyadh (Arabia Saudi)) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química)
Stable zwitterionic spirocyclic Meisenheimer compounds were synthesized using a one-step reaction between picric acid and diisopropyl (ZW1) or dicyclohexyl (ZW3) carbodiimide. A solution of these compounds displays intense orange fluorescence upon UV or visible light excitation, which can be quenched or "turned-off" by adding a mole equivalent amount of F⁻ or CN⁻ ions in acetonitrile. [...]
2017 - 10.3390/molecules22111842
Molecules, Vol. 22, Issue 11 (November 2017) , art. 1842
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5 p, 518.3 KB |
Emission color tuning and white-light generation based on photochromic control of energy transfer reactions in polymer micelles
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Bälter, Magnus (Chalmers University of Technology. Chemistry and Chemical Engineering) ;
Li, Shiming (Chalmers University of Technology. Chemistry and Chemical Engineering) ;
Morimoto, Masakazu (Rikkyu University. Research Center for Smart Molecules) ;
Tang, Sicheng (University of Miami. Laboratory for Molecular Photonics) ;
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química) ;
Irie, Masahiro (Rikkyu University. Research Center for Smart Molecules) ;
Raymo, Françisco M. (University of Miami. Laboratory for Molecular Photonics) ;
Andréasson, Joakim (Chalmers University of Technology. Chemistry and Chemical Engineering)
We encapsulate a fluorescent donor molecule and a photochromic acceptor unit (photoswitch) in polymer micelles and show that the color of the emitted fluorescence is continuously changed from blue to yellow upon light-induced isomerization of the acceptor. [...]
2016 - 10.1039/c6sc01623e
Chemical science, Vol. 7, Num. 9 (June 2016) , p. 5867-5871
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