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Littérature scientifique sur le sujet « Molecular organic conductors »

Auteur : Grafiati
Publié le 28 mars 2023

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Articles de revues sur le sujet "Molecular organic conductors"

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Donaldson, Laurie. « Excluding molecular dopants improves organic conductors ». Materials Today 36 (juin 2020) : 3–4. http://dx.doi.org/10.1016/j.mattod.2020.04.023.

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Kadoya, Tomofumi. « Molecular conductors composed from Organic-Transistor Materials ». Impact 2020, no 4 (13 octobre 2020) : 38–39. http://dx.doi.org/10.21820/23987073.2020.4.38.

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Assistant Professor Tomofumi Kadoya is part of a team within the Graduate School of Material Science at the University of Hyogo in Japan. He is engaged with a range of different investigations related to conductive organic materials. One of the main focuses of Kadoya's research is organic transistors and organic charge-transfer (CT) complexes. CT complexes achieve conductivity by chemical doping but in organic transistors, conduction carriers are generated by field effect, where an electric field is used to control the flow of current. Among the many goals of the research, Kadoya and his team want to increase the methods and types of organic doping.
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KHODORKOVSKY, V., et J. Y. BECKER. « ChemInform Abstract : Molecular Design of Organic Conductors ». ChemInform 26, no 28 (17 août 2010) : no. http://dx.doi.org/10.1002/chin.199528328.

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Bechgaard, K., et D. Jérome. « Organic Conductors and Organic Superconductivity ». Physica Scripta T39 (1 janvier 1991) : 37–44. http://dx.doi.org/10.1088/0031-8949/1991/t39/004.

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KOBAYASHI, Hayao, Reizo KATO et Akiko KOBAYASHI. « Molecular conductors - From isolated molecule to organic superconductor. » Nihon Kessho Gakkaishi 27, no 5 (1985) : 314–23. http://dx.doi.org/10.5940/jcrsj.27.314.

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Hasegawa, Hiroyuki, Susumu Takano, Nobuhiko Miyajima et Tamotsu Inabe. « Molecular Conductors Comprised of Organic Cations and Phthalocyanines ». Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 285, no 1 (1 juillet 1996) : 113–18. http://dx.doi.org/10.1080/10587259608030787.

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Caro, Jaume, Susana Garelik et Albert Figueras. « Anisotropic materials prepared by OCVD : Organic molecular conductors ». Chemical Vapor Deposition 2, no 6 (novembre 1996) : 251–53. http://dx.doi.org/10.1002/cvde.19960020609.

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Cassoux, P., L. Brossard, M. Tokumoto, H. Kobayashi, A. Moradpour, D. Zhu, M. Mizuno et E. Yagubskii. « New results on molecular inorganic and organic conductors ». Synthetic Metals 71, no 1-3 (avril 1995) : 1845–48. http://dx.doi.org/10.1016/0379-6779(94)03076-i.

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Yoshida, Zen-Ichi, et Toyonari Sugimoto. « New Donors for Molecular Organic (Super)Conductors and Ferromagnets ». Angewandte Chemie 100, no 11 (novembre 1988) : 1633–37. http://dx.doi.org/10.1002/ange.19881001148.

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Yoshida, Zen-ichi, et Toyonari Sugimoto. « New Donors for Molecular Organic(Super)Conductors and Ferromagnets ». Angewandte Chemie International Edition in English 27, no 11 (novembre 1988) : 1573–77. http://dx.doi.org/10.1002/anie.198815731.

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Thèses sur le sujet "Molecular organic conductors"

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ASHOKA, SAHADEVAN SUCHITHRA. « Anilate-based Molecular Building Blocks for Metal-Organic Frameworks and Molecular Conductors ». Doctoral thesis, Università degli Studi di Cagliari, 2019. http://hdl.handle.net/11584/260592.

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This work reports on the design, synthesis and characterization of novel anilate-based functional molecular materials showing luminescent, magnetic and/or conducting properties. The family of anilate ligands comprises several derivatives obtained by introducing various substituents (H, F, Cl, Br, I, CN, etc.) at the 3 and 6 positions of the common 2,5-dihydroxy-1,4-benzoquinone framework. Their electronic/structural features, coordination modes, ability to mediate magnetic exchange interactions between coordinated d and/or f-metal centers, and to work as efficient antenna ligands towards NIR lanthanide ions, make them suitable candidates for the preparation of the materials reported. In Chapter 1, the synthesis of a multifunctional mixed-valence FeIIFeIII anilate-based coordination polymer, obtained by using the chlorocyanilate ligand (ClCNAn2-), formulated as [TAG][FeIIFeIII(ClCNAn)3]•(solvate) (TAG = tris(amino)-guanidinium) is reported. This compound is characterized by single crystal X-Ray, at 150K and 10K, magnetic, mössbauer and conductivity measurements. Moreover, correlation of conductivity difference between anilate and pioneer oxalate based FeIIFeIII 2D coordination polymers are explained using theoretical calculations (small-polaron hopping model). In Chapter 2, the series of 2D layered coordination polymers based on chlorocyanilate ligand as building blocks formulated as [Ln2(ClCNAn)3(DMF)6]•(DCM)x (LnIII = Yb (1) (x = 0), Nd (2) and Er (3) (x = 2)) are reported. The synthesis, structural characterization, photophysical studies, time-resolved photoluminescence studies performed on both the bulk and nanosheets, effects induced by the exfoliation process on the photo-physical properties of the nanosheets are discussed. In Chapter 3, the new family of NIR-emitting lanthanide coordination polymers based on chlorocyanilate ligand and carboxylate ligands (di-hydroxy-terephthalic acid (DOBDC) and tetrafluoroterephthalic acid (F4-BDC)), which are the commonly used ligands to obtain 2D layered materials are reported. These systems are formulated as [Ln4(ClCNAn)5(DOBDC)1(DMSO)10]•(DMSO)2 (LnIII - Yb (1), Er (2)) [Ln2(ClCNAn)2(F4-BDC)(DMSO)6] (LnIII – Yb (3), Er (4)). Structural characterizations along with time-resolved photoluminescence studies on these compounds are described. In Chapter 4, series of 2D layered coordination polymers based on chlorocyanilate ligand and DyIII are reported. These compounds are formulated as [Dy2(ClCNAn)3(DMSO)6] (1), [Dy2(ClCNAn)6(DMSO)6] (1'), [Dy2(ClCNAn)3(DMF)6](CH2Cl2) (3), (Me2NH2)2[Dy2(ClCNAn)4(H2O)2]•(DMF) (4). The synthesis, structural characterization along with its magnetic characterization is described. In Chapter 5, using the above-mentioned anilate ligands with the BEDT-TTF organic donor, purely organic semiconductors formulated as [BEDT-TTF]2[HClCNAn] (1) and [BEDT-TTF][HCl2An] (2) are obtained by electrocrystallization. Their structural characterization, transport properties and band structure calculation are reported. In Chapter 6, structural diversity and physical properties of П-d hybrid multifunctional paramagnetic molecular conductors obtained by combining BEDT-TTF and [Fe(ClCNAn)3]3- as conducting and magnetic carrier respectively are reported. These compounds are formulated as [BEDT-TTF]4[Fe(ClCNAn)3]•3H2O (1) and [BEDT-TTF]5[Fe(ClCNAn)3]2•2CH3CN (2). Their structural characterization, transport properties and magnetic properties are described. The framework of the thesis is as follows: Part I - General Introduction on Molecular Materials, State of the Art on Anilate-based MOFs and Coordination Polymers and Molecular Conductors together with aim of the work. Part II - Results and discussions, which is divided into 6 Chapters whose content has been summarized above. Part III - Conclusions and the Perspectives. Part IV - Annexes for additional information
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Taniguchi, Masateru. « Studies on Structures and Physical Properties of Organic Molecular Conductors ». Kyoto University, 2001. http://hdl.handle.net/2433/150659.

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Branton, Philip Michael. « Molecular design of inorganic materials ». Thesis, University of Surrey, 1998. http://epubs.surrey.ac.uk/844618/.

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Work on modelling compounds possessing die tetraaza[14]annulene (TAA) fragment is described. Modelling studies have been conducted to investigate both structural and electronic properties, of both single molecules and extended arrays of these compounds. The structural aspects have been investigated using molecular mechanics and crystallographic database investigations. Molecules based on the tetraaza[14] annulene structure have been found to adopt one of four conformations. The geometries of these conformations are planar, saddle-shaped, slightly twisted, and dome-shaped. The complexed metal centre and the arrangement of substituents on the periphery of the ligand, have been found to determine which conformation a molecule adopts. In order to model the compounds, three new atom types have been created for the Universal Force Field. The electronic aspects have been investigated using Hartree Fock based calculations for single molecules and Extended Huckel based calculations for extended systems. The electronics of die single molecules have shown there to be a linear trend in the LUMO energies, although die HOMO energies vary very little. The reason for this trend in the LUMOs is unknown, but appears not to be related to any obvious structural feature.
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Ashoka, Sahadevan Suchithra. « Anilate-based molecular building blocks for metal-organic frameworks and molecular conductors Conducting Anilate-Based Mixed-Valence Fe(II)Fe(III) Coordination Polymer : Small-Polaron Hopping Model for Oxalate-Type Fe(II)Fe(III) 2D Networks Nanosheets of Two-Dimensional Neutral Coordination Polymers Based on Near-Infrared-Emitting Lanthanides and a Chlorocyananilate Ligand ». Thesis, Angers, 2019. http://bu.univ-angers.fr/Contact.

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Ce travail porte sur la synthèse et la caractérisation de matériaux moléculaires fonctionnels basés sur la molécule anilate et présentant des propriétés de conductivité, de magnétisme et de luminescence. Les anilates sont des dérivés de la 2,5-dihydroxy-1,4-benzoquinone substitués en positions 3 et 6 par une variété d’éléments (H, F, Cl, Br, I, CN, etc). Parmi eux, le seul composé hétérosubstitué ClCNAn2- a été choisi pour préparer une nouvelle famille de polymères de coordination bidimensionnels (PC 2D) avec des métaux de transition ou des ions lanthanides : i) un PC à valence mixte FeIIFeIII, de formule [TAG][FeIIFeIII(ClCNAn)3], contient pour la première fois le cation triaminoguanidinium dans un réseau de coordination.ii) Des PC basés sur le ligand ClCNAn2- et des ions lanthanides émettant dans le proche infrarouge (YbIII, NdIII, ErIII). Ces composés ont été exfoliés en monocouches, et des études de photoluminescence ont été menées à la fois sur les cristaux et les monocouches. iii) Une famille de PC hétéroleptiques basés sur des ions lanthanides et sur deux types de ligands pontants, le ligand ClCNAn2- et des ligands de type carboxylates (DOBDC et F4-BDC). iv) Une famille de PC basés sur des ions DyIII ont été préparés afin d’étudier leur propriétés magnétiques. v) Finalement, la capacité des ligands anilates à se combiner à des conducteurs moléculaires basés sur le BEDT-TTF a été démontrée à travers la synthèse et l’électrocristallisation de semiconducteurs organiques et de conducteurs magnétiques hybrides avec l’anion [Fe(ClCNAn)3]3-
This work reports on the design, synthesis and characterization of novel anilate-based functional molecular materials showing luminescent, magnetic and/or conducting properties. The family of anilate ligands comprises several derivatives obtained by introducing various substituents (H, F, Cl, Br, I, CN, etc.) at the 3 and 6 positions of the common 2,5-dihydroxy-1,4-benzoquinone framework. Among the anilate ligands, the only known heterosubstituted anilate with Cl/CN substituents at the 3,6 positions, ClCNAn2-, have been selected for preparing a novel family of 2D layered coordination polymers (2D CP) with both 3d metal ions and 4f lanthanide ions, through a general and straightforward synthetic strategy. i) Mixed-valence FeIIFeIII 2D CP, formulated as [TAG][FeIIFeIII(ClCNAn)3], containing, the tris(amino)-guanidinium (TAG) cation for the first time in such 2D networks has been synthesized and thoroughly characterized. ii) 2D CPs based on NIR-emitting lanthanides (YbIII, NdIII, ErIII) and the ClCNAn2- ligand, have been prepared and characterized. These layered compounds were exfoliated to nanosheets, by sonication-assisted solution synthesis. Time-resolved photoluminescence studies performed on both the bulk and nanosheets are also highlighted. iii) Novel family of heteroleptic 2D CPs based on NIR-emitting lanthanides and mixed ligands (ClCNAn2- and carboxylate ligands (DOBDC and F4-BDC)), were prepared and characterized. vi) Novel family of 2D CPs based on DyIII and ClCNAn2- were prepared in order to investigate their magnetic properties. v) Furthermore, the ability of anilate ligands to work as components of BEDT-TTF- based molecular conductors have been demonstrated through the synthesis, via electrocrystallization technique. vi) П-d hybrid multifunctional paramagnetic molecular conductors BEDT-TTF and [Fe(ClCNAn)3]3-) were also studied
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Allain, Magali. « Études structurales par diffraction des rayons X appliquées à des cages supramoléculaires et à des conducteurs moléculaires ». Electronic Thesis or Diss., Rennes 1, 2022. http://www.theses.fr/2022REN1S081.

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Les structures discrètes auto-assemblées dirigées par les métaux sont des édifices de grande taille qui cristallisent difficilement et se décomposent rapidement. De plus, la résolution de ces structures est compliquée par des données de diffraction de moyenne qualité. Différentes techniques de sélection de cristaux et une méthode d’affinement de structure, appliquée aux cages, sont discutées avec notamment l’utilisation détaillée du programme Squeeze qui permet de supprimer la contribution des atomes et molécules désordonnés ou non visibles dans ces grandes structures. Deux types de cages isolées et entrelacées sont décrites structuralement. Dans la deuxième partie, une série de nouveaux matériaux conducteurs organiques à base de TMTSF et de dérivés du TTF, et incorporant un nouvel anion fluorotantalate, est décrite et les relations structure-propriétés de conduction sont discutées. La première phase de Bechgaard avec l’anion magnétique hexafluoro-rhénate a été caractérisée et différentes études de stabilité en température et de conduction sont présentées. Le TMTSF et le BEDT-TTF ont été associés à plusieurs anions mixtes hexafluorés de tantale, de rhénium et de phosphore pour former de nouveaux alliages conducteurs. Ces synthèses ont également générées des matériaux avec des anions originaux. Deux méthodes de détermination de la charge sur les TMTSF ont été comparées sur plusieurs conducteurs organiques, issus de ce travail ou d’une base de données cristallographiques
The discrete self-assembled metal assisted structures are big size edifices which do not crystallize easily and decompose rapidly. Moreover, the resolution of these structures is difficult because of the medium quality of the diffraction data sets. Different crystals selection techniques and a refinement method, applied to the supramolecular cages, are discussed, with a particular focus on the use of the Squeeze program which allows the suppression of the disordered atoms and molecules contributions. Two types of isolated and interlocked cages are structurally described. In the second part, a series of new organic conducting materials based on TMTSF and on TTF derivatives, incorporating a novel fluoro-tantalate anion, is described. The structure-conducting properties relationship is discussed. The first Bechgaard phase with a magnetic anion, namely hexafluororhenate, is described, together with its temperature dependent stability and conducting properties. TMTSF and BEDT-TTF have been associated to several mixed tantalum, rhenium or phosphorous hexafluoro anions to provide new conducting alloys. These syntheses also afforded crystalline materials with original anions. Two methods to estimate the oxydation state of the TMTSF donors are compared for several radical cation salts, either prepared during this PhD work or selected from a crystallographic data base
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Dhakal, Pashupati. « Angular Magnetoresistance Oscillations in the Molecular Organic Conductor (DMET)2I3 : Experiment and Calculation ». Thesis, Boston College, 2010. http://hdl.handle.net/2345/1566.

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Thesis advisor: Michael J. Naughton
Quasi-one dimensional (Q1D) molecular organic conductors are among the most exciting materials in condensed matter physics, exhibiting nearly every known ground state. They are highly anisotropic, structurally and electronically, and show large oscillatory phenomena in conductivity for magnetic field rotated in different crystalline planes. Several theoretical works have been published to explain these angular magnetoresistance oscillation (AMRO) effects, but the underlying physics remains illunderstood. Here, we present measurements and calculations of magnetotransport in the molecular organic (super)conductor (DMET)2I3 which detect and simulate all known AMRO phenomena for Q1D systems. Employing, for the first time, the true triclinic crystal structure in the calculations, these results address the mystery of the putative vanishing of the primary AMRO phenomenon, the Lebed magic angle effect, for orientations in which it is expected to be strongest. They also show a common origin for Lebed and so-called "Lee-Naughton" oscillations, and confirm the generalized nature of AMRO in Q1D systems. Furthermore, we report the temperature dependence of the upper critical magnetic field in (DMET)2I3, for magnetic field applied along the intrachain, interchain, and interplane directions. The upper critical field exhibits orbital saturation at low temperature for field in all directions, implying that superconductivity in (DMET)2I3 is conventional spin singlet
Thesis (PhD) — Boston College, 2010
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Physics
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Galbiati, Marta. « Molecular Spintronics : from Organic Semiconductors to Self-Assembled Monolayers ». Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112158/document.

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Cette thèse s’inscrit dans le domaine de la spintronique moléculaire. Elle s’intéresse plus précisément aux nouvelles opportunités de façonnage de la polarisation de spin qui découlent de l'hybridation métal ferromagnétique/molécule à l'interface : le nouveau concept de « spinterface ».Dans une première partie nous présentons l’étude de nanojonctions tunnel magnétiques à base de monocouches auto-assemblées (SAMs). Ce système est un des plus prometteur dans l’optique de moduler les propriétés des dispositifs de spintronique par ingénierie chimique, tel un LEGO moléculaire. Nous y présentons la fonctionnalisation de la manganite demi-métallique (La,Sr)MnO3 (LSMO) avec des SAMs d’acides alkylphosphoniques et la fabrication de nanojonctions LSMO/SAMs/Co avec une surface de quelque 10 nm2. Une magnétorésistance de 30% à 50% est observée dans la majorité des dispositifs avec une magnétorésistance tunnel (TMR) jusqu'à 250 % à basse température. Un point remarquable est aussi le comportement très robuste du signal avec la tension: environ 20% de TMR est encore observée au-dessus d’une tension de 1 V. L'influence de la longueur de la chaîne moléculaire a été aussi étudiée et représente un premier pas vers la modulation des dispositifs au niveau moléculaire. Dans une deuxième partie nous présentons l’étude des dispositifs organiques à base de métaux ferromagnétiques à haute TC (température de Curie) et semi-conducteurs organiques. Nous avons réalisé des vannes de spin de Co/Alq3/Co avec des sections de 50 ou 100 µm et fabriquées in-situ par « shadow mask ». Des mesures à température ambiante ont permis d’observer -4% de magnétorésistance (MR) dans une vanne de spin Co/Alq3/Co et +8% MR dans une vanne de spin de Co/MgO/Alq3/Co. Le rôle des deux interfaces sur les propriétés de polarisation de spin des dispositifs est aussi étudié et détaillé. Une forte hybridation métal/molécule dépendant du spin à l'interface inferieure de Co/Alq3, présentant un effet de spinterface (inversion de la polarisation en spin), est observée. Ces études montrent que les effets de spinterface, comme l’inversion de la polarisation de spin, peuvent persister dans un dispositif jusqu’à température ambiante
This thesis targets the field of molecular spintronics and more particularly the new spin polarization tailoring opportunities, unachievable with inorganic materials, which arise from the ferromagnetic metal/molecule hybridization at the interface.: the new concept of Spinterface.In a first part we investigate Self-Assembled Monolayers (SAMs) based magnetic tunnel nanojunctions. This system appears to be a highly promising candidate to engineer the properties of spintronics devices at the molecular level since SAMs are the equivalent of a molecular LEGO building unit. We present the functionalization of the half-metallic manganite (La,Sr)MnO3 (LSMO) with alkyl phosphonic acids SAMs and the fabrication of LSMO/SAMs/Co magnetic tunnel nanojunctions with an area of few 10 nm2. MR of 30% to 50% is observed in most of the devices, while we report even up to 250% tunnel magnetoresistance (TMR) at low temperature. The most striking point is the robustness of the signal with bias voltage with still 20% TMR observed in the volt range. The influence of the molecular chain length is also investigated and represents a first step towards achieving molecular tailoring.In a second part we develop organic spintronics devices relying on high Curie temperature metallic ferromagnetic electrodes and standard organic semiconductor such as Co/Alq3/Co organic spin valves (OSVs). Junctions have a large area (section of 50 or 100 µm) and are fabricated in-situ by shadow mask. Magnetoresistance (MR) effects at room temperature are investigated with -4% MR observed in Co/Alq3/Co OSVs and +8% MR in Co/MgO/Alq3/Co OSVs. The role of the two interfaces on the spin polarization properties of the devices is also investigated. A stronger spin-dependent hybridization is found to occur at the bottom Co/Alq3 interface inverting the spin polarization on the first molecular layer. The observation of spin polarization inversion at room temperature demonstrates that spinterface effects can strive up to room temperature
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Lattach, Youssef. « Development and characterization of sensing layers based on molecularly imprinted conducting polymers for the electrochemical and gravimetrical detection of small organic molecules ». Phd thesis, Conservatoire national des arts et metiers - CNAM, 2011. http://tel.archives-ouvertes.fr/tel-00699628.

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In the field of chemical and biological sensors, the increased need for better sensitivity, faster response and higher selectivity during an analysis process, requires the development of more and more efficient transducing sensing layers. In this context, and with the aim to detect small non-electroactive molecules, such as atrazine (ATZ), we designed, characterized and developed sensing layers constituted by functionalized Molecularly Imprinted Conducting Polymers (MICP) and we integrated them into electrochemical and gravimetrical sensors. Starting from acetonitrile pre-polymerization media containing ATZ as template molecules in the presence of thiophene-based functional monomers (FM, namely TMA, TAA, EDOT, TMeOH or Th), differently functionalized and structurally different polythiophene-based FM-MICP films were electrosynthesized onto gold substrates and used for ATZ detection. The sensing properties of FM-MICP layers were shown to result from the presence in their backbones of pre-shaped FM-functionalized imprinted cavities which keep the memory of the targets. Nevertheless, non-specific adsorption onto the surface of the sensing layers takes place systematically, which affects the selectivity of the recognition process. Thanks to surface characterization techniques, we highlighted the influence of the thickness and of the structural properties of the layers on the efficiency of the recognition process. Besides, this latter was shown to operate in the bulk of the polymer matrixes thanks to layers porosity. On another hand, electrochemical measurements correlated with semi-empirical calculations demonstrated the influence of the nature of FM on the strength of the ATZ-FM interaction in the pre-polymerization medium, and then on the number of ATZ molecular imprints and on the sensitivity towards ATZ of the FM-MICP layers. We showed that TAA-MICP, which presents a low limit of detection (10-9 mol L-1) and a large dynamic range (10-8 to 10-4 mol L-1), is the best sensing layer since it offers the best compromise between high level of specific detection of ATZ and low level of non-specific adsorption. Finally, TAA-MICP was used as sensitive layer in an original Electrochemical Surface Acoustic Wave sensor (ESAW) which enabled simultaneous coupled gravimetric and electrochemical measurements.
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Dahlstedt, Emma. « Synthesis of Electroactive Molecules Based on Benzodioxins and Tetrathiafulvalenes ». Doctoral thesis, KTH, Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3601.

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This thesis deals with the synthesis of electroactiveorganic compounds. The synthesis of ethylenedioxy-benzodioxinstri-dioxin and tetra-dioxin are described. These molecules wereprepared with the aim of creating donor molecules for cationicradical salts. The symmetric analogs of tri-dioxin,methylenedioxy-derivative and ethylenedioxy-naphthalene werealso synthesized. Three different cation radical salts with 2:1stoichiometries were obtained from tri-dioxin, whiletetra-dioxin merely provided polycrystalline materials.Tri-dioxin and tetra-dioxin were also successful as operationalmatrixes in PALDI-TOF.

Tetrathiafulvalenes with the2-dialkyl-amino-1,3-dithiolium-4-thiolate mesoion asbuilding-block was also synthesized. A series of doublyalkylthiol-substituted TTFs were prepared with the aim offorming self-assembly monolayers on gold surfaces in theapplication of organic thin film field-effect transistors.Film-formation for two TTFs were studied and they providedrelatively dense packed monolayers with a discrete distance ofthe TTF moiety from the gold surface.

The mesoionic compound was also for the first time used inanumpolungreaction. The electrophile obtained in situ bytreatment of mesoion with sulfuryl chloride was reacted with avariety of electron-rich aromatic compounds. From the receivedproducts three new arylthio-substituted TTFs weresynthesized.

Keywords:Synthesis, Benzodioxin, Tetrathiafulvalene,Mesoion, Organic Conductor, Cation Radical Salt, CyclicVoltammetry, Electrocrystallization, Self-Assembly Monolayer,SAM, Organic Field-Effect Transistor, OFET

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Magri, Andrea. « Multifunctional complexes for molecular devices ». Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE036/document.

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Les semi-conducteurs organiques à base d’aluminium ont été systématiquement synthétisés et caractérisés par méthodes photo-physiques et électrochimiques. Une étude de leur relation structure-propriétés électroniques a été menée. Les orbitales frontières ont été comparées à celles obtenues par calcul. De nouvelles méthodes ont été utilisées permettant une description de la morphologie des SCOs et un calcul de mobilité des porteurs de charges associés. La mobilité des trous dans Al(Op)3 a été mesurée sur des transistors en film minces: 0.6-2.1×10−6cm2V−1s−1. Par des techniques de spectroscopie en photoémission, la surface de l’hybride Co/Al(Op)3 a été sondée, révélant deux états d’interfaces hybrides, où la polarisation de spin de HIS1 est 8% plus élevée comparée au cobalt nu, et 4% plus faible dans HIS2. Enfin, des aimant moléculaires à base de phénalényle ont été étudiés. [Dy(Op)2Cl(HOp)(EtOH)] présente notamment un gap énergétique de 43.8K et un temps de relaxation de 5x10-4 s
Aluminum-based organic semiconductors (OSCs) were systematically synthesized and studied by photophysical and electrochemical methods to identify a relationship between their chemical structure and electronic properties, using Alq3 as benchmark. Experimental HOMO and LUMO were compared to those computed. In addition, newly developed methods were implemented to generate morphologies and calculate charge carrier mobilities. The hole mobility of Al(Op)3 was measured in thin film transistors: 0.6-2.1×10−6 cm2V−1s−1. By photoemission spectroscopy techniques, the Co/Al(Op)3 hybrid interface was probed. Two hybrid interface states (HISs) were unraveled; the SP (spin polarization) of HIS1 is 8% higher than bare cobalt, whereas the SP of HIS2 is 4% lowered. At last, phenalenyl-based dysprosium SMMs (single-molecule magnet) were investigated. [Dy(Op)2Cl(HOp)(EtOH)] showed an energy gap of 43.8K and a quantum relaxation time of 5x10-4s
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Livres sur le sujet "Molecular organic conductors"

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Ouahab, Lahcène, et Eduard Yagubskii, dir. Organic Conductors, Superconductors and Magnets : From Synthesis to Molecular Electronics. Dordrecht : Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-1027-6.

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Ouahab, Lahcène. Organic Conductors, Superconductors and Magnets : From Synthesis to Molecular Electronics. Dordrecht : Springer Netherlands, 2004.

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Roth, S. One-dimensional metals : Conjugated polymers, organic crystals, carbon nanotubes. 2e éd. Weinheim : Wiley-VCH, 2004.

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Bruce, Duncan W., Dermot O'Hare et Richard I. Walton. Molecular materials. Hoboken, N.J : Wiley, 2010.

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Molecular materials. Hoboken, N.J : Wiley, 2010.

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1945-, Saito G., et Pacifichem 2005 (2005 : Honolulu, Hawaii), dir. Multifunctional conducting molecular materials. Cambridge : RSC Publishing, 2007.

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1954-, Nalwa Hari Singh, dir. Handbook of organic conductive molecules and polymers. Chichester : Wiley, 1997.

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Enoki, Toshiaki, Gunzi Saito, Fred Wudl, Robert C. Haddon et Katsumi Tanigaki. Multifunctional Conducting Molecular Materials. Royal Society of Chemistry, The, 2007.

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(Editor), R. Farchioni, et G. Grosso (Editor), dir. Organic Electronic Materials : Conjugated Polymers and Low Molecular Weight Organic Solids (Springer Series in Materials Science) (Springer Series in Materials Science). Springer, 2001.

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Carroll, David, et Siegmar Roth. One-Dimensional Metals : Conjugated Polymers, Organic Crystals, Carbon Nanotubes. Wiley & Sons, Limited, John, 2005.

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Chapitres de livres sur le sujet "Molecular organic conductors"

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Khodorkovsky, Vladimir, et James Y. Becker. « Molecular Design of Organic Conductors ». Dans Organic Conductors, 75–114. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9780367811907-3.

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Matsumoto, Mutsuyoshi, Hiroaki Tachibana et Takayoshi Nakamura. « Applications of Organic Conductors : Molecular Electronics ». Dans Organic Conductors, 759–90. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9780367811907-16.

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de Caro, Dominique, Christophe Faulmann et Lydie Valade. « Nanoparticles of Organic Conductors ». Dans Molecular Materials, 127–51. Boca Raton, FL : CRC Press, [2017] : CRC Press, 2017. http://dx.doi.org/10.1201/9781315118697-6.

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Akai-Kasaya, Megumi. « Coulomb-Blockade in Low-Dimensional Organic Conductors ». Dans Molecular Architectonics, 111–34. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57096-9_6.

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Delhaes, P., et L. Ducasse. « Magnetic Properties of Organic Conductors and Superconductors ». Dans Molecular Magnetism : From Molecular Assemblies to the Devices, 473–502. Dordrecht : Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-2319-0_18.

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Kartsovnik, M. V. « Interlayer Magnetoresistance in Layered Organic Conductors ». Dans Molecular Low Dimensional and Nanostructured Materials for Advanced Applications, 159–68. Dordrecht : Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0349-0_15.

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Coronado, E., J. R. Galán-Mascarós, A. Murcia-Martínez, F. M. Romero et A. Tarazón. « Multifuctionality in Molecular Conductors and Magnets ». Dans Organic Conductors, Superconductors and Magnets : From Synthesis to Molecular Electronics, 127–42. Dordrecht : Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-1027-6_8.

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Kurmoo, M., D. R. Talham et P. Day. « Electron Paramagnetic Resonance of Organic Conductors (BEDT-TTF)2X ». Dans Lower-Dimensional Systems and Molecular Electronics, 169–73. Boston, MA : Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2088-1_12.

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Kobayashi, Hayao, Yoshinori Okano, Hideki Fujiwara, Hisashi Tanaka, Madoka Tokumoto, Wakako Suzuki, Emiko Fujiwara et Akiko Kobayashi. « Development of Single-Component Molecular Metals and Magnetic Molecular Superconductors ». Dans Organic Conductors, Superconductors and Magnets : From Synthesis to Molecular Electronics, 81–98. Dordrecht : Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-1027-6_5.

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Enoki, Toshiaki, Masashi Aimatsu, Hisashi Yamazaki, Kazuki Okabe, Junichi Nishijo, Kengo Enomoto, Akira Miyazaki et al. « Unconventional Properties of TTF-Based Organic Magnetic Conductors ». Dans Organic Conductors, Superconductors and Magnets : From Synthesis to Molecular Electronics, 113–26. Dordrecht : Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-1027-6_7.

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Actes de conférences sur le sujet "Molecular organic conductors"

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Cassoux, P., L. Brossard, M. Tokumoto, H. Kobayashi, A. Moradpour, D. Zhu, M. Mizuno et E. Yagubskii. « New results on molecular inorganic and organic conductors ». Dans International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.835657.

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Laukhina, Elena, Victor Lebedev, Vladimir Laukhin, Gerard Oncins, Raphael Pfattner, Concepcio Rovira et Jaume Veciana. « Lightweight biocompatible physical sensors : Polymeric films “self-metallized” ; with organic molecular conductors ». Dans TRANSDUCERS 2011 - 2011 16th International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2011. http://dx.doi.org/10.1109/transducers.2011.5969193.

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Fork, R. L., C. H. Brito Cruz, P. C. Becker et C. V. Shank. « Continuum spectroscopy using optical pulses of 6-fs duration ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.thd5.

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A principal problem in obtaining optical pulses with bandwidths approximating that of the visible spectrum and durations approaching the transform limit has been the uncompensated cubic phase distortion of pulses compressed by grating pairs. We describe the use of combined prism and grating sequences to compensate not only the quadratic, but also the cubic, phase distortion of optical pulses frequency broadened in an optical fiber. We obtain pulses of 6-fs duration which can be used on a routine basis for time-resolved spectroscopy. We have used these pulses to study the dynamics of spectral hole burning in organic dye molecules and in semiconductor materials. Examples are given of recent work on molecules, such as cresyl violet and Nile blue, and on semi-conductor materials, such as GaAs. We have also used these 6-fs pulses to examine the optical Stark effect in organic dye molecules such as rhodamine B and rhodamine 6G. We obtain, in particular, direct observations of the dynamic shift of the rhodamine B absorption spectrum on a femtosecond time scale. We also use the intensity dependence of these shifts as an alternate means of measuring the molecular dipole moment.
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Lee, R. A., et T. R. Lundquist. « Low Resistivity FIB Depositions Within High Aspect Ratio Holes ». Dans ISTFA 1996. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.istfa1996p0085.

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Abstract The latest IC modification requirement is to decrease the resistivity of Focused Ion Beam (FIB) deposits, especially deposits within a FIB machined hole. The resistivity of platinum conductor deposited by FIB within a hole is much greater (5000-50000 (μΩ-cm) than that deposited on a surface (~200 |μΩ-cm) (1). Auger analysis of surface deposited platinum conductor gives the composition ratios as ~ 50% platinum, ~34% carbon, ~15% gallium and ~1 % Oxygen. The escape solid angle of the organic carrier is much less from a hole than from a surface; therefore, we find more of the non-conductive organic material is trapped inside the hole which increases the fill resistivity. With its planarization and multiple metal levels, advanced IC process technology forces contact to lower level metal to be through high aspect ratio holes. To make a low resistance contact through such a hole, deposited material must have a high ratio of platinum to carbon and Oxygen. An improved technique is needed to remove the organic carrier molecules and deposit material containing this higher platinum percentage. The way to achieve such deposition is to adjust gas arrival rate and beam current to produce a deposition rate that allows sufficient time for the organic carrier molecules to escape. Using this method, we can to obtain fill resistivity of about 1000-2500 (μΩ-cm within high aspect ratio holes. This paper discusses in detail the technique to achieve such low resistivity in high aspect ratio holes. On the surface where space is not so limited, a greater deposition rate yields shorter times to resistance as well as better step coverage, but within a hole a lower resistivity material is needed to result in good conductance to lower level metal.
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Laukhina, Elena, Raphael Pfattner, Marta Mas-Torrent, Concepcio´ Rovira, Jaume Veciana et Vladimir Laukhin. « Flexible Film-Based Sensors Structured with a High Piezoresistive Organic Molecular Conductor as an Active Component ». Dans 2010 First International Conference on Sensor Device Technologies and Applications (SENSORDEVICES). IEEE, 2010. http://dx.doi.org/10.1109/sensordevices.2010.9.

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