Exploració per autor "Díaz Díaz, David"

Ara es mostren els items 1-15 de 15

    • A pH-triggered polymer degradation or drug delivery system by light-mediated Cis/Trans isomerization of o-hydroxy cinnamates 

      Abramov, Alex; Maiti, Binoy; Keridou, Ina; Puiggalí Bellalta, Jordi; Reiser, Oliver; Díaz Díaz, David (2021-01-01)
      Article
      Accés obert
      A new methodology for the pH-triggered degradation of polymers or for therelease of drugs under visible light irradiation based on the cyclization ofortho-hydroxy-cinnamates (oHC) to coumarins is described. The keyoHCstructural ...

    • Advanced functional hydrogel biomaterials based on dynamic B-O bonds and polysaccharide building blocks 

      Aeridou, Eleni; Díaz Díaz, David; Alemán Llansó, Carlos; Pérez Madrigal, Maria del Mar (2020-10-12)
      Article
      Accés obert
      Dynamic covalent chemistry applied to polymers has attracted significant attention over the past decade. Within this area, this review highlights the recent research on polysaccharide-based hydrogels cross-linked by boronic ...

    • Antimicrobial activity of poly(3,4-ethylenedioxythiophene) n-doped with a pyridinium-containing polyelectrolyte 

      Sánchez Jiménez, Margarita; Estrany Coda, Francesc; Borràs Cristòfol, Núria; Maiti, Binoy; Díaz Díaz, David; Valle Mendoza, Luis Javier del; Alemán Llansó, Carlos (2019-08-30)
      Article
      Accés obert
      In spite of p-doped conducting polymers having been widely studied in the last decades and many applications having been developed, studies based on n-doped conducting polymers are extremely scarce. This fact is even more ...

    • Aromatic ionene topology and counterion-tuned gelation of acidic aqueous solutions 

      Bachl, Jürgen; Bertran Cànovas, Òscar; Mayr, Judith; Alemán Llansó, Carlos; Díaz Díaz, David (2017-04-28)
      Article
      Accés obert
      Unusual gelation of acidic solutions was achieved using polycations bearing quaternary ammonium moieties. These ionene polymers are based on a disubstituted phenylene dibenzamide core, which allows the construction of ...

    • Cationic ionene as an n-dopant agent of poly(3,4-ethylenedioxythiophene) 

      Saborío González, Maricruz; Bertran Cànovas, Òscar; Lanzalaco, Sonia; Häring, Marleen; Díaz Díaz, David; Estrany Coda, Francesc; Alemán Llansó, Carlos (Royal Society of Chemistry (RSC), 2018-03-12)
      Article
      Accés obert
      We report the reduction of poly(3,4-ethylenedioxythiophene) (PEDOT) films with a cationic 1,4-diazabicyclo[2.2.2]octane-based ionene bearing N,N0-(meta-phenylene)dibenzamide linkages (mPI). Our main goal is to obtain n-doped ...

    • Current status and challenges of biohydrogels for applications as supercapacitors and secondary batteries 

      Armelín Diggroc, Elaine Aparecida; Pérez Madrigal, Maria del Mar; Alemán Llansó, Carlos; Díaz Díaz, David (Royal Society of Chemistry, 2016-05-03)
      Article
      Accés obert
      Progress in the chemical sciences has formed the world we live in, both on a macroscopic and on a nanoscopic scale. The last decade witnessed the development of high performance materials that storage charge on many ways, ...

    • DNA-catalyzed Henry reaction in pure water and the striking influence of organic buffer systems 

      Häring, Marleen; Pérez Madrigal, Maria del Mar; Kühbeck, Dennis; Pettignano, Asja; Quignard, Françoise; Díaz Díaz, David (2015-03-04)
      Article
      Accés obert
      In this manuscript we report a critical evaluation of the ability of natural DNA to mediate the nitroaldol (Henry) reaction at physiological temperature in pure water. Under these conditions, no background reaction took ...

    • Expanding the limits of amide-triazole isosteric substitution in bisamide-based physical gels 

      Tautz, Markus; Torras Costa, Juan; Grijalvo Torrijo, Santiago; Eritja Casadellà, Ramon; Saldías, César; Alemán Llansó, Carlos; Díaz Díaz, David (Royal Society of Chemistry (RSC), 2019-01-01)
      Article
      Accés obert
      Gelation of organic solvents using N,N0-((1S,2S)-cyclohexane-1,2-diyl)didodecanamide (C12–Cyc) is driven by its self-assembly via antiparallel hydrogen bonds and van der Waals intermolecular interactions. In this work we ...

    • Isomeric cationic ionenes as n-dopant agents of poly(3,4-ethylenedioxythiophene) for in situ gelation 

      Saborío González, Maricruz; Bertran Cànovas, Òscar; Lanzalaco, Sonia; Häring, Marleen; Franco García, María Lourdes; Puiggalí Bellalta, Jordi; Díaz Díaz, David; Estrany Coda, Francesc; Alemán Llansó, Carlos (2018-01-01)
      Article
      Accés obert
      Three isomeric ionene polymers containing 1,4-diazabicyclo[2.2.2]octane (DABCO) and N,N’-(x-phenylene)dibenzamide (x= ortho- / meta- / para-) linkages have been used as dopant agents to produce n-doped poly(3,4-ethylened ...

    • Molecular dynamics simulations on self-healing behavior of ionene polymer-based nanostructured hydrogels 

      Bertran Cànovas, Òscar; Saldías, César; Díaz Díaz, David; Alemán Llansó, Carlos (Elsevier, 2020-12-21)
      Article
      Accés obert
      The microscopic mechanism accounting for the self-healing attribute of aromatic ionene-forming hydrogels derived from 1,4-diazabicyclo[2.2.2]octane (DABCO) and N,N’-(x-phenylene)dibenzamide (x= ortho- / meta- / para-) ...

    • Paradigm shift for preparing versatile M2+-free gels from unmodified sodium alginate 

      Pérez Madrigal, Mª del Mar; Torras Ambros, Joan; Casanovas, Jordi; Häring, Marleen; Alemán Llansó, Carlos; Díaz Díaz, David (2017-08-11)
      Article
      Accés obert
      This manuscript describes a new route to prepare rapidly Ca2+-free hydrogels from unmodified sodium alginate by simply mixing with small organic molecules such as poly(carboxylic acid) compounds as cross-linker agents ...

    • Protective coatings for aluminum alloy based on hyperbranched 1,4-polytriazoles 

      Armelín Diggroc, Elaine Aparecida; Whelan, Rory; Martinez Triana, Yeimy Mabel; Alemán Llansó, Carlos; Finn, M. G.; Díaz Díaz, David (2017-02-01)
      Article
      Accés obert
      Organic polymers are widely used as coatings and adhesives to metal surfaces, but aluminum is among the most difficult substrates because of rapid oxidative passivation of its surface. Poly(1,4-disubstituted 1,2,3-triazoles) ...

    • Self-assembled fibrillar networks of a multifaceted chiral squaramide: supramolecular multistimuli-responsive alcogels 

      Schiller, Jana; Alegre-Requena, Juan V.; Herrera, Raquel P.; Casanovas Salas, Jordi; Alemán Llansó, Carlos; Díaz Díaz, David (2016)
      Article
      Accés obert
      Chiral N, N'-disubstituted squaramide 1 has been found to undergo self-assembly in a variety of alcoholic solvents at low concentrations leading to the formation of novel nanostructured supramolecular alcogels. The gels ...

    • Thermoresponsive shape-memory hydrogel actuators made by phototriggered click chemistry 

      Maiti, Binoy; Abramov, Alexey; Enshaei, Hamidreza; Puiggalí Bellalta, Jordi; Alemán Llansó, Carlos; Díaz Díaz, David; Alemán Llansó, Carlos (2020-04-24)
      Article
      Accés obert
      This article describes the design and synthesis of a new series of hydrogel membranes composed of trialkyne derivatives of glycerol ethoxylate and bisphenol A diazide (BA-diazide) or diazide-terminated PEG600 monomer via ...

    • Towards sustainable solid-state supercapacitors: electroactive conducting polymers combined with biohydrogels 

      Pérez Madrigal, Maria del Mar; Estrany Coda, Francesc; Armelín Diggroc, Elaine Aparecida; Díaz Díaz, David; Alemán Llansó, Carlos (Royal Society of Chemistry, 2016-01-04)
      Article
      Accés obert
      Solid-state organic electrochemical supercapacitors (OESCs) have been fabricated using poly(3,4-ethylenedioxythiophene) (PEDOT) electrodes, a biohydrogel as electrolyte system, and polyaniline fibers as redox additive. The ...