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Academic literature on the topic 'Couche auto-assemblées'
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Journal articles on the topic "Couche auto-assemblées"
Hauffman, T., J. B. Jorcin, Y. V. Ingelgem, T. Breugelmans, E. Tourwe, A. Hubin, and J. Vereecken. "Étude de la formation de couches organiques auto assemblées à l'aide de la spectroscopie d'impédance électrochimique "odd random phase multisine"." Matériaux & Techniques 95 (2007): 411–15. http://dx.doi.org/10.1051/mattech:2008037.
Full textDissertations / Theses on the topic "Couche auto-assemblées"
Marmont, Patrick. "Amélioration des performances de transistors organiques en couche mince à base de pentacene par des monocouches auto-assemblées." Paris 7, 2010. http://www.theses.fr/2010PA077042.
Full textThe goal of this study is to improve charge injection by inserting an oriented dipolar monolayer between the gold contact and the semi conductor in an organic thin film transistor OTFT (structure bottom-contact). The source/drain gold contacts were modified with alkanethiols and fluoroalkanethiols self-assembled monolayers. Consistent with the UPS measurements, we observe an increase and a decrease of the OTFT contact resistance respectively with the increase of the work function and the decrease of the work function with the alkanethiol ( SH-(CH₂)₂-(CH₂)₇-CH₃) with the fluorinated molecules ( SH-(CH2)2-(CH2)7-CH3 )and further decrease when the length of the fluorinated molecules is shortened SH- (CH₂)₂-(CF₂)₇-CF₃ )
Robert, Gaël. "Les nanotubes de carbone comme électrodes pour l'électronique moléculaire : connexion et étude de couches auto-assemblées et de molécules uniques." Paris 11, 2008. http://www.theses.fr/2008PA112235.
Full textConnecting a small number of molecules is an ongoing challenge in molecular electronics. During this thesis work, we have used carbon nanotubes as electrodes in two distinct configurations. In the first one, a single-walled metallic nanotube is used to build a nanometer-sized metal/self assembled monolayer/metal junction. The case of an insulating SAM is compared to the one of a σ-π-σ system. The characteristics obtained in the first case allow determining the insulating molecular barrier parameters. In the second one, we obtain structured electrical characteristics. For this system, we propose a model where the transport is modulated via the highest occupied molecular orbital. When a semiconducting nanotube is used, the proposed device geometry enables studying the behaviour o a nanotube transistor where the insulating SAM is used as an ultra-thin gate dielectric. The realized devices display excellent switching performances. We underline the major role of the SAM dipole on the transistor modulation properties. In the second configuration, we have studied and optimized a chemical synthesis to make a high number of single-molecule junctions in solution where the single molecule is connected through covalent bonds to carbon nanotubes. After deposition, we characterize a single molecule of ethylenediamine connected by two single-walled nanotubes
Soullier, Jérémie. "Monocouches auto-assemblées d'acides phosphoniques comme revêtements lubrifiants." Montpellier 2, 2007. http://www.theses.fr/2007MON20125.
Full textLenfant, Stéphane. "Monocouches organiques auto-assemblées pour la réalisation de diodes moléculaires." Lille 1, 2001. https://ori-nuxeo.univ-lille1.fr/nuxeo/site/esupversions/2ab011dd-aca5-48e7-ba3f-979ec0027e85.
Full textBoulas, Christophe. "Contribution à l'étude des propriétés isolantes de monocouches d'alkyltrichlorosilanes auto-assemblées sur substrat de silicium." Lille 1, 1996. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1996/50376-1996-420.pdf.
Full textFilippini, Gaëlle. "Simulation moléculaire de monocouches auto-assemblées sur l'or." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2013. http://tel.archives-ouvertes.fr/tel-00905250.
Full textMalytskyi, Volodymyr. "Synthèse et monocouches auto-assemblées de molécules "Push-Pull"." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4308.
Full textDuring the past decades, the synthesis of organic donor-acceptor (D/A) “push-pull” chromophores has been of considerable interest because of their potential use in nonlinear optics, LEDs, field effect transistors, and photovoltaics (PV). As a part of the design of the PV cells, these molecular structures correctly arranged on a surface should improve the donor/acceptor interface, the optical absorption, and increase the volume of the active layer. We have developed a multi-step synthesis of new “push-pull” molecules bearing a thiol reactive group enabling to form self-assembled monolayers (SAM) on gold or ITO surfaces. Combining various donor, acceptor, and spacer moieties we could tune the “push-pull” optical and electronic properties. The obtained “push-pull” products exhibit a high light absorption and can thus be effective in PV applications. Final SAMs with and without nanoparticles were studied mainly by contact angles, UV-vis, IR and XPS spectroscopy, ellipsometry and near-field microscopy (STM and AFM). As-obtained organic layers were then electrically and optically characterized to assess their potential use in the field of PV energy conversion
Hou, Yanxia. "Elaboration et caractérisation de biofilms pour micro- et nanobiocapteurs olfactifs." Ecully, Ecole centrale de Lyon, 2005. http://bibli.ec-lyon.fr/exl-doc/yhou.pdf.
Full textThe objective of this work is to elaborate and characterize biofilms of odorant-binding proteins and olfactory receptors on electrodes for construction of olfactory micro- and nanobiosensors. Mixed Langmuir-Blodgett (LB) films of IgG/amphiphile and the corresponding immunosensor were first studied in order to validate the immobilization technique of Langmuir-Blodgett. Then, LB technique was applied to construct odorant biosensor based on mixed odorant-binding proteins/amphiphile LB films which were characterized by AFM and electrochemical impedance spectroscopy (EIS). However, we found that LB technique is not suitable for immobilization of G-protein coupled receptors on the electrode. Therefore, a novel immobilization technique of self-assembled multilayer was developed and characterized by electrochemical impedance spectroscopy and AFM. It was demonstrated that rhodopsin and olfactory receptors I7 can
Hieulle, Jeremy. "Structures et propriétés électroniques de monocouches organiques auto-assemblées, caractérisée par STM et XPS." Palaiseau, Ecole polytechnique, 2014. http://www.theses.fr/2014EPXX0070.
Full textDinh, Duy Hai. "Nouvelles couches monomoléculaires auto-assemblées possédant des fonctions glycidyle : application aux immunocapteurs à ondes de Love." Bordeaux 1, 2007. http://www.theses.fr/2007BOR13467.
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