Correction: Reactivity of a pyridinium-substituted dimethyldihydropyrene switch under aerobic conditions: self-sensitized photo-oxygenation and thermal release of singlet oxygen

Correction for 'Reactivity of a pyridinium-substituted dimethyldihydropyrene switch under aerobic conditions: self-sensitized photo-oxygenation and thermal release of singlet oxygen' by Saioa Cobo et al., Chem. Commun., 2015, 51, 13886–13889

Nouveaux matériaux polymères conjugués et métallés (études électrochimiques et photophysiques)

Les modifications, par synthèse chimique, de la structure conjuguée de polymères conducteurs électroniques à base d'oligothiophène et de bipyridine, par incorporation de groupes latéraux et/ou par complexation d'ions métalliques, permettent de moduler les propriétés électroniques et photophysiques du matériau. L'insertion directe d'un chromophore de type ruthénium trisbypiridine par l'intermédiaire de la bipyridine de la matrice autorise un transfert énergétique du semi-conducteur vers le complexe et confère de nouvelles propriétés au matériau. L'étude intensive de ces propriétés par des techniques spectroscopiques (absorption et émission UV-visible), et électrochimiques couplées (spectroscopies UV-visible, infra-rouge et RPE), souligne les relations structure/propriétés pour cette famille de polymères. L'application de ces matériaux comme couche active dans des transistors à effet de champ et des diodes a mis en évidence leurs propriétés en terme de transport et d'électroluminescence.GRENOBLE1-BU Sciences (384212103) / SudocSudocFranceF

Supramolecular Networks and Wires Dominated by Intermolecular BiEDOT Interactions

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A new surface-bound molecular switch based on the photochromic dimethyldihydropyrene with light-driven release of singlet oxygen properties

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Ultrathin Molecular Layer Junctions Based on Cyclometalated Ruthenium Complexes

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Multi-functional switches of ditopic ligands with azobenzene central bridges at a molecular scale

International audienceLigands are designed to have ditopic bipyridine terminal groups linked through photochromic azobenzene central units, which exhibit multi-switchable properties by different external stimuli. The molecule can switch between cis-and trans-conformations at their bipyridine terminal groups upon protonation and at their central azobenzene units upon irradiation of photons. As a result, the system shows four different isomeric states: cis–TRANS, trans–TRANS, cis–CIS and trans–CIS. The four conformers are switched and are visualized by scanning tunneling microscopy at the solid–liquid interface, which gives a direct demonstration of the multi-functional switches at a molecular level

RuII tris-bipyridine-modified electrode as a sensor for battery electrolyte

International audienceFunctionalization of a carbon electrode through the electrochemical reduction of ruthenium tris-bipyridine diazonium salts prepared in situ allows determination of the nature of the anions often present in commonly used lithium and sodium battery electrolyte (i.e. PF6− and ClO4−) and also the presence of fluoride anions arising from PF6− degradation. Surprisingly, although these “battery” anions are supposed to exhibit poor coordination ability, their interaction with the electrogenerated RuIII complex is sufficiently strong and reversible to selectively discriminate between the anions ClO4− and PF6− through the observed shift in E°. This study examined the impact of any fluoride present and found a linear relationship between the current response and the F− concentration. This has been applied to ageing LP30 battery electrolyte, confirming the low solubility of LiF in battery electrolyte. This overall behavior could help in the analysis of electrolytes from the recycling sector

Electrografted monolayer based on a naphthalene diimide–ruthenium terpyridine complex dyad: efficient creation of large-area molecular junctions with high current densities

International audienceAn electron donor-acceptor dyad has been designed for the creation of large-area molecular junctions (MJ). Diazonium cation electrografting was used to form well controlled monolayers. The robustness of the monolayer enabled the creation of MJs using direct topcoat evaporation with a high yield of operating devices. Given the number of potential applications in molecular electronics, including switches, memories, transistors and rectifiers, the development of new molecular systems with multifunctional properties is of great importance