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Publications

Affichage des publications 621 à 630 sur 748 au total

Chimie inorganique

Multinuclear NMR as a tool for studying local order and dynamics in CH3NH3PbX3 (X = Cl, Br, I) hybrid perovskites

We report on Pb, Br, N, H, C and H NMR experiments for studying the local order and dynamics in hybrid perovskite lattices. Pb NMR experiments conducted at room temperature on a series of MAPbX compounds (MA = CHNH; X = Cl, Br and I) showed that the…

Claire Roiland, Gaelle Trippé-Allard, Kaoula Jemli, Bruno Alonso, Jean-Claude Ameline, Regis Gautier, Thierry Bataille, Laurent Le Polles, Emmanuelle Deleporte, Jacky Even, Claudine Katan

Physical Chemistry Chemical Physics -

Chimie

Non-linear optical, electrochemical and spectroelectrochemical properties of amphiphilic inner salt porphyrinic systems

Three zwitterionic meso-substituted A(3)B- and AB(2)C-porphyrins containing one sulfonato alkylpyridinium substituent and three or two alkoxy-substituted phenyl groups were synthesized in good yield and fully characterized as to their…

Claude P. Gros, Clément Michelin, Griet Depotter, Nicolas Desbois, Koen Clays, Yan Cui, Lihan Zeng, Yuanyuan Fang, Hoang Minh Ngo, Colin Lopez, Isabelle Ledoux, Jean-François Nicoud, Frédéric Bolze, Karl M. Kadish

Journal of Porphyrins and Phthalocyanines -

Matériaux

Using Low Temperature Photoluminescence Spectroscopy to Investigate CH$_3$NH$_3$PbI$_3$ Hybrid Perovskite Degradation

Investigating the stability and evaluating the quality of the CH$_3$NH$_3$PbI$_3$ perovskite structures is quite critical both to the design and fabrication of high-performance perovskite devices and to fundamental studies of the photophysics of the…

Khaoula Jemli, Hiba Diab, Ferdinand Lédée, Gaelle Trippé-Allard, Damien Garrot, Bernard Geffroy, Jean‐sébastien Lauret, Pierre Audebert, Emmanuelle Deleporte

Molecules -

Chimie

Side-Chain Metallopolymers Containing Second-Order NLO-Active Bimetallic Ni-II and Pd-II Schiff-Base Complexes: Syntheses, Structures, Electrochemical and Computational Studies

Unsymmetric Schiff-base metalloligand precursor 2 is synthesized by condensation of phenol-functionalized ferrocenylenaminone 1 with 2-hydroxy-5-nitrobenzaldehyde. Heterobimetallic complexes 3 and 4 result from the N2O2-tetradentate coordination of…

Salvador Celedon, Mauricio Fuentealba, Thierry Roisnel, Isabelle Ledoux-Rak, Jean-René Hamon, David Carrillo, Carolina Manzur

European Journal of Inorganic Chemistry -

Matériaux

Thermodynamics study of the noncovalent functionalization of surfactant suspended graphene nanosheets with porphyrin molecules

We report on the noncovalent functionalization of graphene with hydrophobic tetraphenyl porphyrin (TPP) molecules in micellar aqueous suspensions. We study the thermodynamical parameters of the reaction using optical spectroscopy, and measure its…

Géraud Delport, Fabien Vialla, Stéphane Campidelli, Christophe Voisin, Jean‐sébastien Lauret

physica status solidi (b) -

Physique

Single layer nano graphene platelets derived from graphite nanofibres

Solutions of calibrated nanographenides (negatively charged nanographenes) are obtained by dissolution of graphite nanofibre intercalation compounds (GNFICs). Deposits show homogeneous unfolded nanographene platelets of 1 to 2 layers thickness and…

Kai Huang, Géraud Delport, Lucile Orcin-Chaix, Carlos Drummond, Jean‐sébastien Lauret, Alain Penicaud

Nanoscale -

Chimie

Room-temperature exciton coherence and dephasing in two-dimensional nanostructures

Electronic coherence has attracted considerable attention for its possible role in dynamical processes in molecular systems. However, its detection is challenged by inhomogeneous line broadening and interference with vibrational coherences. In…

Elsa Cassette, Ryan D Pensack, Benoît Mahler, Gregory D Scholes

Nature Communications -