Listar por autor "Charbonnière, Loïc J."
Mostrando ítems 1-11 de 11
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[C–H⋯anion] interactions mediate the templation and anion binding properties of topologically non-trivial metal–organic structures in aqueous solutions
Bilbeisi, Rana A.; Prakasam, Thirumurugan; Lusi, Matteo; El-Khoury, Roberto; Platas-Iglesias, Carlos; Charbonnière, Loïc J.; Olsen, John-Carl; Elhabiri, Mourad; Trabolsi, Ali (Royal Society of Chemistry, 2016-02-12)[Abstract] Two synthetic approaches—temperature variation and anion templation—allowed for the selective formation of a [2]catenane ([2]C4+) or a trefoil knot (TK6+), or for the enhanced formation of a Solomon link (SL8+), ... -
Definition of an intramolecular Eu‐to‐Eu energy transfer within a discrete [Eu2L] complex in solution
Nonat, Aline; Regueiro-Figueroa, Martín; Esteban-Gómez, David; Blas, Andrés de; Rodríguez-Blas, Teresa; Platas-Iglesias, Carlos; Charbonnière, Loïc J. (Wiley, 2012-06-25)[Abstract] Ligand L, based on two do3a moieties linked by the methylene groups of 6,6′‐dimethyl‐2,2′‐bipyridine, was synthesized and characterized. The addition of Ln salts to an aqueous solution of L (0.01 M Tris‐HCl, pH ... -
Highly relaxing gadolinium based MRI contrast agents responsive to Mg2+ sensing
Abada, Sabah; Lecointre, Alexandre; Elhabiri, Mourad; Esteban-Gómez, David; Platas-Iglesias, Carlos; Tallec, Gaylord; Mazzanti, Marinella; Charbonnière, Loïc J. (Royal Society of Chemistry, 2012-04-28)[Abstract] A Gd complex based on a polyphosphonated pyridyl ligand shows a very high stability in aqueous solution (logKEuL = 25.7), a high relaxivity (8.5 mM−1 s−1 at 25 °C and 20 MHz) and a marked and selective relaxivity ... -
Importance of outer-sphere and aggregation phenomena in the relaxation properties of phosphonated gadolinium complexes with potential applications as MRI contrast agents
Elhabiri, Mourad; Abada, Sabah; Sy, Mohamadou; Nonat, Aline; Choquet, Philippe; Esteban-Gómez, David; Cassino, Claudio; Platas-Iglesias, Carlos; Botta, Mauro; Charbonnière, Loïc J. (Wiley, 2015-04-10)[Abstract] A series composed of a tetra-, a tris- and a bisphosphonated ligand based on a pyridine scaffold (L4, L3 and L2, respectively) was studied within the frame of lanthanide (Ln) coordination. The stability constants ... -
Room temperature molecular up conversion in solution
Nonat, Aline; Chan, Chi Fai; Liu, Tao; Platas-Iglesias, Carlos; Liu, Zhenyu; Wong, Wing-Tak; Wong, Wai-Kwok; Wong, Ka-Leung; Charbonnière, Loïc J. (Springer Nature, 2016-06-15)[Abstract] Up conversion is an Anti-Stokes luminescent process by which photons of low energy are piled up to generate light at a higher energy. Here we show that the addition of fluoride anions to a D2O solution of a ... -
Self‐aggregated dinuclear lanthanide(III) complexes as potential bimodal probes for magnetic resonance and optical imaging
Regueiro-Figueroa, Martín; Nonat, Aline; Rolla, Gabriele A.; Esteban-Gómez, David; Blas, Andrés de; Rodríguez-Blas, Teresa; Charbonnière, Loïc J.; Botta, Mauro; Platas-Iglesias, Carlos (Wiley, 2013-08-26)[Abstract] Homodinuclear lanthanide complexes (Ln=La, Eu, Gd, Tb, Yb and Lu) derived from a bis‐macrocyclic ligand featuring two 2,2′,2′′‐(1,4,7,10‐tetraazacyclododecane‐1,4,7 triyl)triacetic acid chelating sites linked ... -
Sensing uranyl(VI) ions by coordination and energy transfer to a luminescent europium(III) complex
Harvey, Peter; Nonat, Aline; Platas-Iglesias, Carlos; Natrajan, Louise S.; Charbonnière, Loïc J. (Wiley, 2018-06-13)[Abstract] The release of uranyl(VI) is a hazardous environmental issue, with limited ways to monitor accumulation in situ. Here, we present a method for the detection of uranyl(VI) ions through the utilization of a unique ... -
Solution-State Cooperative Luminescence Upconversion in Molecular Ytterbium Dimers
Avecilla, Fernando; Soro, Lohona K.; Knighton, Richard C.; Thor, Waygen; Przybilla, Frédéric; Jeannin, Olivier; Esteban-Gómez, David; Platas-Iglesias, Carlos; Charbonnière, Loïc J. (Wiley, 2023)[Abstract] Two homometallic ytterbium dimers are prepared and their solution-state photoluminescence and upconversion properties are investigated. Both complexes exhibit two-photon cooperative luminescence upconversion in ... -
Spectroscopic properties of a family of mono‐ to trinuclear lanthanide complexes
Sy, Mohamadou; Esteban-Gómez, David; Platas-Iglesias, Carlos; Rodríguez-Rodríguez, Aurora; Tripier, Raphaël; Charbonnière, Loïc J. (Wiley, 2017-04-10)[Abstract] A series of mono‐, di‐, and trinuclear complexes of Eu and Tb was designed to study the influence of the number of Ln emitting centers on the luminescence properties of discrete polynuclear complexes. The complexes ... -
Sulphur-rich functionalized calix[4]arenes for selective complexation of Hg2+ over Cu2+, Zn2+ and Cd2+
Bensenane, Bachir; Asfari, Zouhair; Platas-Iglesias, Carlos; Esteban-Gómez, David; Djafri, Fatiha; Elhabiri, Mourad; Charbonnière, Loïc J. (Royal Society of Chemistry, 2016-08-16)[Abstract] The syntheses of two new ligands based on a calix[4]arene scaffold in the cone conformation functionalized on the phenolic positions 1 and 3 by diethylthiophosphonates (L1) or tetra(tri)thioethyleneglycol (L2) ... -
The role of ligand to metal charge-transfer states on the luminescence of Europium complexes with 18-membered macrocyclic ligands
Nonat, Aline; Esteban-Gómez, David; Valencia, Laura; Pérez-Lourido, Paulo; Barriada, José Luis; Charbonnière, Loïc J.; Platas-Iglesias, Carlos (Royal Society of Chemistry, 2019-02-27)[Abstract] We report a detailed study of the photophysical properties of EuIII and TbIII complexes with two ligands based on a 3,6,10,13-tetraaza-1,8(2,6)-dipyridinacyclotetradecaphane platform containing either four ...