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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20181003T143000
DTEND;TZID=Europe/Paris:20181003T160000
DTSTAMP:20180928T105028Z
CREATED:20180928T105028Z
LAST-MODIFIED:20180928T105028Z
UID:4810-1538577000-1538582400@www.is2m.uha.fr
SUMMARY:Complex π-conjugated architectures : From molecular design to device application
DESCRIPTION:Cyril Poriel\nInstitut des Sciences Chimiques de Rennes – UMR CNRS 6226 \nUniversité de Rennes 1\, 35000 Rennes\, France\nE-mail: cyril.poriel@univ-rennes1.fr \nOrganic electronics have imposed a strong demand on π-conjugated molecules and the synthesis of new materials with specific properties is strongly developed worldwide. Regioisomerism\, also called positional isomerism\, is an important concept in organic chemistry which can have remarkable consequences on the properties of molecules.1-3 Indeed\, a simple structural modification can drastically influence the electronic and physical properties of an organic semi-conductor (OSC)\, which in turn strongly modifies the performance and stability of the corresponding electronic device.4\,5 Although very promising\, this concept remains nevertheless rarely used in optoelectronics. Herein\, we will investigate the impact of regioisomerism to finely tune the singlet and triplet energies of different classes of materials\, from dihydroindenofluorene to fluorenes isomers\, leading to highly efficient optoelectronic devices.1\,2\,6\,7 Different molecular designs3\,8-12 of high triplet energy host materials incorporating various electron withdrawing and/or electron donating fragments for high performance green and blue Phosphorescent OLEDs will be presented. \nReferences\n(1) Romain\, M.; Thiery\, S.; Shirinskaya\, A.; Declairieux\, C.; Tondelier\, D.; Geffroy\, B.; Jeannin\, O.; Rault-Berthelot\, J.; Métivier\, R.; Poriel\, C. Angew. Chem. Int. Ed. 2015\, 54\, 1176.\n(2) Romain\, M.; Tondelier\, D.; Vanel\, J.-C.; Geffroy\, B.; Jeannin\, O.; Rault-Berthelot\, J.; Métivier\, R.; Poriel\, C. Angew. Chem. Int. Ed. 2013\, 52\, 14147.\n(3) Sicard\, L.; Quinton\, C.; Peltier\, J.-D.; Tondelier\, D.; Geffroy\, B.; Biapo\, U.; Métivier\, R.; Jeannin\, O.; Rault-Berthelot\, J.; Poriel\, C. Chem. Eur. J. 2017\, 23\, 7719\n(4) Thiery\, S.; Tondelier\, D.; Declairieux\, C.; Geffroy\, B.; Jeannin\, O.; Métivier\, R.; Rault-Berthelot\, J.; Poriel\, C. J. Phys. Chem. C 2015\, 119\, 5790.\n(5) Romain\, M.; Chevrier\, M.; Bebiche\, S.; Mohammed-Brahim\, T.; Rault-Berthelot\, J.; Jacques\, E.; Poriel\, C. J. Mater. Chem. C 2015\, 3\, 5742.\n(6) Romain\, M.; Quinton\, C.; Tondelier\, D.; Geffroy\, B.; Jeannin\, O.; Rault-Berthelot\, J.; Poriel\, C. J. Mater. Chem. C 2016\, 4\, 1692.\n(7) Romain\, M.; Tondelier\, D.; Geffroy\, B.; Jeannin\, O.; Jacques\, E.; Rault-Berthelot\, J.; Poriel\, C. Chem. Eur. J. 2015\, 21\, 9426.\n(8) Romain\, M.; Tondelier\, D.; Geffroy\, B.; Shirinskaya\, A.; Jeannin\, O.; Rault-Berthelot\, J.; Poriel\, C. Chem. Commun. 2015\, 51\, 1313.\n(9) Poriel\, C.; Rault-Berthelot\, J.; Thiery\, S.; Quinton\, C.; Jeannin\, O.; Biapo\, U.; Geffroy\, B.; Tondelier\, D. Chem. Eur. J. 2016\, 22\, 17930.\n(10) Poriel C;. Rault-Berthelot\, J. Acc. Chem. Res. 2018\, 51\, 1818\n(11) Thiery\, S.; Tondelier\, D.; Geffroy\, B.; Jacques\, E.; Robin\, M.; Métivier\, R.; Jeannin\, O.; Rault-Berthelot\, J.; Poriel\, C. Org. Lett. 2015\, 17\, 4682.\n(12) Quinton\, C.; Thiery\, S.; Jeannin\, O.; Tondelier\, D.; Geffroy\, B.; Jacques\, E.; Rault-Berthelot\, J.; Poriel\, C. ACS Appl. Mater. Interfaces. 2017\, 9\, 6194.
URL:https://www.is2m.uha.fr/event/complex-%cf%80-conjugated-architectures-from-molecular-design-to-device-application/
LOCATION:Amphithéâtre de l’IS2M\, 15 rue jean starcky\, Mulhouse\, Mulhouse\, 68057\, France
ATTACH;FMTTYPE=image/png:https://www.is2m.uha.fr/wp-content/uploads/2018/09/poriel.png
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20181011T140000
DTEND;TZID=Europe/Paris:20181011T153000
DTSTAMP:20181011T133840Z
CREATED:20181011T094952Z
LAST-MODIFIED:20181011T133840Z
UID:4824-1539266400-1539271800@www.is2m.uha.fr
SUMMARY:Fonctionnalisation du graphène pour une modification contrôlée de ses propriétés
DESCRIPTION:Yoan Teysanndier\nSteven De Feyter group\, KU Leuven – University of Leuven\, Department of Chemistry\, Division of Molecular Imaging and Photonics\, Celestijnenlaan 200F\, B-3001 Leuven (Belgium) \n  \nLa découverte du graphène\, couche monoatomique de carbone hybridé sp2\, et de ses propriétés physiques et électriques exceptionnelles a suscité un énorme intérêt auprès de la communauté scientifique. Une modulation de certaines de ses caractéristiques s’avère néanmoins nécessaire en vue de son intégration dans des dispositifs (opto)électroniques. \nLa physisorption de molécules fonctionnelles à sa surface est par exemple une méthode permettant de modifier la densité de porteurs de charges (c’est-à-dire le niveau de dopage) du graphène sans dégrader le matériau. La formation de monocouches de molécules auto-assemblées\, concept bien établi notamment sur le graphite\, permet de plus de contrôler avec exactitude l’arrangement et la densité des fonctions présentes en surface. Il sera démontré au cours de cette présentation comment la physisorption de couches auto-assemblées sur le graphène peut moduler avec précision son degré de dopage.1 La combinaison de méthodes de caractérisation structurale (microscopies en champ proche)\, spectroscopique (Raman) et électrique (transistors) permet de relier la modification des propriétés du graphène avec la nature et la structure des couches moléculaires. \nLa chimisorption de molécules offre de son côté certains avantages\, comme une plus grande robustesse\, mais sacrifie les qualités électroniques du graphène en introduisant des défauts dans sa structure. Les techniques de caractérisation évoquées précédemment offrent la possibilité d’étudier ces liaisons covalentes sous un nouvel angle et de révéler des possibilités de correction des défauts créés.2 De plus\, la décoration du graphène par ces molécules ouvre la voie à sa post-modification contrôlée. \nFinalement\, les perspectives d’étendre ces stratégies de fonctionnalisation moléculaire à d’autres matériaux bidimensionnels comme les dichalcogénures de métaux de transitions seront évoquées. \n  \n  \nRéférences \n  \n(1)        Phillipson\, R.; Lockhart de la Rosa\, C. J.; Teyssandier\, J.; Walke\, P.; Waghray\, D.; Fujita\, Y.; Adisoejoso\, J.; Mali\, K. S.; Asselberghs\, I.; Huyghebaert\, C.et al. Tunable doping of graphene by using physisorbed self-assembled networks. Nanoscale 2016\, 8 (48)\, 20017. \n(2)       Greenwood\, J.; Phan\, T. H.; Fujita\, Y.; Li\, Z.; Ivasenko\, O.; Vanderlinden\, W.; Van Gorp\, H.; Frederickx\, W.; Lu\, G.; Tahara\, K.et al. Covalent Modification of Graphene and Graphite Using Diazonium Chemistry: Tunable Grafting and Nanomanipulation. ACS Nano 2015\, 9 (5)\, 5520. \n 
URL:https://www.is2m.uha.fr/event/fonctionnalisation-du-graphene-pour-une-modification-controlee-de-ses-proprietes/
LOCATION:IRJBD 1er étage\, 3 bis rue Alfred Werner\, Mulhouse
ATTACH;FMTTYPE=image/jpeg:https://www.is2m.uha.fr/wp-content/uploads/2018/10/teyssandier.jpg
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20181026T100000
DTEND;TZID=Europe/Paris:20181026T113000
DTSTAMP:20181019T140413Z
CREATED:20181019T135708Z
LAST-MODIFIED:20181019T140413Z
UID:4862-1540548000-1540553400@www.is2m.uha.fr
SUMMARY:Mesoporous silica nanoparticles for intracellular target drug release
DESCRIPTION:Prof. Marcos A. Bizeto  \nHybrid Materials Laboratory Chemistry Department\, Federal University of São Paulo\, Brazil \nmabizeto@unifesp.br \nLysosomes are cellular organelles responsible for degrade captured extracellular matter and digest intracellular substances. These compartments became the target site of the treatment of some infections and of many inflammatory\, neurodegenerative and auto-immune diseases. These organelles have also an important influence on the effectiveness of gene therapy treatments applied to cancers and other genetic and acquired disorders. \nOur research group is involved in the developing of mesoporous silica nanocarriers for use in gene therapy as non-viral vectors for DNA transfection. These vectors must present three main features: (i) have the right size and surface charge for being efficiently captured by cells through endocytosis; (ii) have the capability of complexing DNA molecules and protect them from the enzymatic degradation in lysosomes; (iii) ensure a rapid escape from lysosomes and promote the DNA release in the citosol. The vectors prepared satisfied quite well the first two and the studies are now focused on elaborating different strategies of promoting the delivery of lysosomotropic factors to accelerate the escape from the lysosomes. Prototypes of pH responsive mechanisms were developed to allow the target drug release only in lysosomes and some of them will be presented in the seminar.
URL:https://www.is2m.uha.fr/event/mesoporous-silica-nanoparticles-for-intracellular-target-drug-release/
LOCATION:Amphithéâtre de l’IS2M\, 15 rue jean starcky\, Mulhouse\, Mulhouse\, 68057\, France
ATTACH;FMTTYPE=image/jpeg:https://www.is2m.uha.fr/wp-content/uploads/2018/10/m_bizeto.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20181026T143000
DTEND;TZID=Europe/Paris:20181026T160000
DTSTAMP:20181019T141326Z
CREATED:20181019T140830Z
LAST-MODIFIED:20181019T141326Z
UID:4866-1540564200-1540569600@www.is2m.uha.fr
SUMMARY:Nanoparticles supported on non-modified cellulose films
DESCRIPTION:Fernanda Ferraz Camilo\nUniversidade Federal de São Paulo – Brazil \nhttp://www.researcherid.com/rid/L-2591-2013 \nThe application of nanomaterials as a powder or dispersion has several limitations such as difficulty in solid-liquid separation and in reuse and aggregation in the medium. An alternative to overcome this problem is to anchor the nanoparticles in suitable matrices. Cellulose films\, obtained from renewable source\, is an interesting material for use as support for nanomaterials due to its low cost\, abundance\, biodegradability and non-toxicity. In this presentation\, we will show the production of conductive films based on a combination of cellulose film with silver nanoparticles and a conducting polymer\, polyaniline [1]. Also\, we will present the immobilization of other silver and manganese dioxide nanoparticles aiming the production of curatives with cicatrizing and bactericidal activities and catalysts for the degradation of indigo carmine\, respectively. \n***************************************************************** \n[1] R. da S. Oliveira\, M.A. Bizeto\, F.F. Camilo\, Production of self-supported conductive films based on cellulose\, polyaniline and silver nanoparticles\, Carbohydr. Polym. 199 (2018) 84–91. doi:10.1016/j.carbpol.2018.06.049.
URL:https://www.is2m.uha.fr/event/nanoparticles-supported-on-non-modified-cellulose-films/
LOCATION:Amphithéâtre de l’IS2M\, 15 rue jean starcky\, Mulhouse\, Mulhouse\, 68057\, France
ATTACH;FMTTYPE=image/jpeg:https://www.is2m.uha.fr/wp-content/uploads/2018/10/f_camilo.jpg
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