Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"oligothiophene"”.
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End-capped oligothiophene dimers incorporating TTF, metal dithiolene and spirocentric cores
… technologies, particularly those based on oligothiophenes and small molecules, including characterisation and device structures. Chapter 2 describes the synthesis, design and characterisation of oligothiophene precursors for unique tetrathiafulvalene, metal dithiolene, and spirocyclic …
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Singlet oxygen generating luminescent lanthanide complexes with naphthalimide-based and oligothiophene-based sensitizers
Luminescent lanthanide (LnIII) complexes that also generate singlet oxygen (1O2) are of interest to medical, biological, and analytical fields, as they can provide cytotoxicity and luminescence using light excitation. Because of the interest in these compounds, systematic studies were used to help …
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Strategien zur Optimierung organischer Solarzellen: Dotierte Transportschichten und neuartige Oligothiophene mit reduzierter Bandlücke
Organische Solarzellen besitzen das Potential für leichte und zugleich flexible photovoltaische Anwendungen, die kostengünstig hergestellt werden können und damit einen Beitrag zur Verminderung der Emission von Kohlendioxid, Methan und Stickoxiden leisten können. Zur Herstellung von organischen …
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Synthesis, multiscale-multiphase characterization and applications of thiophene-based biohybrids
… of this Ph. D thesis has been the development of oligothiophene-oligonucleotide hybrid derivatives as tools, on one side, to detect DNA hybridisation events and, on the other, as model compounds to investigate thiophene-nucleobase interactions in the solid state. To obtain oligothiophene …
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Synthesis and Optical Properties of Four Oligothiophene-Ruthenium Complexes and Synthesis of a Bidentate Ligand for C-F Bond Activation
… the study of optical devices. A series of four oligothiophene-ruthenium complexes has been synthesized. Variation in oligothiophene length and bipyridine substitution allowed comparison of these variables on electronic properties. The longer oligothiophenes display lower energy absorption and …
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Tunable Electronic Excitations in Hybrid Organic-Inorganic Materials: Ground-State and Many-Body Perturbation Approaches
… and tunability, a series of 2D HOIPs with oligothiophene derivative as the organic cations and lead halide is investigated in the first part of this work. Initial computational models with variable organic and inorganic components are constructed from the experimental structure of …
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Design and synthesis of molecular actuators and sensors
… their characterization, including signatures of oligothiophene interactions, are described. Due to its chirality, we examined the possibilities of the binaphthol polymer as a chiral amine sensor. To create actuators that make use of the expanding model, we propose new conjugated seven-membered …
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Small molecules based on novel electron-deficient acceptor units for organic electronic applications
… organic semiconductors, including a summary of oligothiophene based materials and common electron-deficient acceptor units used, the principles behind OPV and OFET devices and how organic semiconductors can be optimised in order to produce the best working devices.The synthesis, physical …
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Electronic Structure Based Investigations of Hybrid Perovskites and Their Nanostructures
… 2) taking the conjugation length in different oligothiophene cations and the inorganic layer thickness as two independent factors, the author confirmed a gradual change of quantum well types. Second, to gain an in-depth understanding of the spin properties of the energy bands (specifically, the …
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Computer simulation of ordering and dynamics in liquid crystals in the bulk and close to the surface
… transition properties of a prototype of the oligothiophene semiconductor family: sexithiophene (T6). T6 forms two crystalline polymorphs largely studied, and possesses liquid crystalline phases still not well characterized, From simulations we detected a phase transition from crystal to …
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Photoinduzierte Absorptionsspektroskopie an organischen, photovoltaisch aktiven Donor-Akzeptor-Heteroübergängen
… reduziert werden. Eine Reihe von Dicyanovinyl-Oligothiophenen (DCVnT, n=3-6) wurden als Donor im Heteroübergang zu Fulleren C60 verwendet. Das Ionisationspotenzial der DCVnT nimmt mit zunehmender Kettenlänge ab, während die Elektronenaffinität, die weitestgehend durch die …