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Showing 1 to 20 of 162 for “"Donor-Acceptor"”.
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Mechanistic Studies of Donor-Acceptor Cyclopropanes
… have been investigated as a source of donor-acceptor cyclopropanes, providing an understanding of the mechanism of reaction between these cyclopropanes and nitrosoarenes, as well as azo dicarboxylates. Cross-over experiments have been utilized to provide key pieces of experimental …
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Donor-Acceptor Interactions of Triorganotin Halides
Made available in DSpace on 2014-12-09T17:35:31Z (GMT). No. of bitstreams: 1 6612292.pdf: 3791681 bytes, checksum: 6bade07078fb2ab6782d074fa71081dc (MD5) Previous issue date: 1966
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Dynamic combinatorial synthesis of donor-acceptor catenanes
… 2 describes the discovery of a new generation of donor-acceptor [2]catenanes in aqueous dynamic combinatorial systems. The assembly of these [2]catenanes is promoted by a high salt concentration (1 M NaNO3), which raises the ionic strength and encourages hydrophobic association. More importantly, …
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Electrical characterization of large-area donor-acceptor molecular junctions
The electrical properties of five different donor – bridge – acceptor large-area monolayer molecular junctions show current rectification. Langmuir-Blodgett deposition onto thermally evaporated gold yielded four out of the five monolayers. The fifth system was as a monolayer formed by self-assembly …
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Donor-Acceptor Block Copolymers for Charge Separation at Nanostructured Interfaces
… a series of functionalized block copolymers, acceptor labeled polymers and low molecular weight model compounds were synthesized in which hole transport (donor), electron transport (acceptor) and light absorbing functionalities were incorporated. My approach was to use functionalized block …
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Nitrosoarenes: magnetic anisotropy, donor-acceptor bonding and host-guest chemistry
… NMR spectroscopy. Also studied is the electron donor-acceptor (DA) bonding ability of the N=O group of N,N-dimethyl-4-nitrosobenzene (DMANB) and N,N-diethyl-4-nitrosobenzene (DEANB), in the monomeric state, as they complex and co-crystallize with electron-poor alkenes such as …
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Describing Charge Transfer in Extended Donor-Acceptor Systems with Density Functional Theory
… In particular, the theoretical description of donor-acceptor (DA) systems is plagued by this shortcoming. DA systems are frequently used as light absorbing components in organic photovoltaic devices. The lowest electronic excitation in these molecules is usually influenced by CT. In order to …
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Donor-Acceptor Cyclobutanes and Their Application for Heterocycle Synthesis and Progress Towards Biselide A
… of each other. Under Yb(OTf)3 catalysis donor-acceptor cyclobutanes undergo a formal [4+2] cycloaddition with aldehydes to generate tetrahydropyrans exclusively in a cis disposition. Activated aldehydes were generally well tolerated giving tetrahydropyrans in moderate to good yields (51 - …
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Donor-Acceptor Block Copolymers in Organic Electronics - Spectroscopy, Charge Transport, Morphology and Device Application
… work deals with the characterisation of novel donor-acceptor block copolymers and their constituent polymer blocks that are well-suited for organic photovoltaics. Block copolymers phase-separate and self-assemble into nanostructured morphologies due to the covalent linkage of the two blocks. …
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Molecular Photoswitches: Towards the Rational design of Donor-Acceptor Stenhouse Adducts and Photoswitchable Transmembrane Peptides
… de interruptores moleculares tipo DASA (donor-acceptor Stenhouse adduct) y en lograr fotocontrolar por primera vez péptidos transmembrana utilizando azobencenos. En concreto, la presente tesis se divide en siete capítulos. El primer capítulo ofrece una introducción histórica a la …
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Facilitating an Integrated Data-Centric Approach to Optimize Donor-Acceptor Copolymer Based Organic Field Effect Transistors
… accelerate the development of OFETs derived from donor-acceptor (D-A) copolymers. The chapters of this dissertation exemplify the benefits of integrating data-centric approaches into the established polymer electronics framework to streamline the advancement of these materials. Throughout this …
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Enhancing the Photovoltaic Performance of P3HT/PDIB Silsesquioxane Donor-Acceptor System Using Spray Deposition Fabrication Technique
… which consists of multiple layers of different donor and acceptor blends with inorganic transition metal oxides such as zinc oxide and molybdenum oxides.</p>
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Stress relief: Exercising Lewis acid catalysis for donor-acceptor cyclopropane ring-opening annulations, a basis for new reaction methodologies
… In order to assemble diverse polycycles, donor-acceptor cyclopropanes are useful, versatile synthetic equivalents for C-C bond formations. By taking advantage of the strain within these unique, polarized systems, differing molecular architectures can be accessed directly to perform …
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Studying the properties of conjugated donor acceptor complexes with naphthaleneimide acceptors and dialkoxybenzene donors linked by a triple bond
The self-assembly of aromatic electron donor and acceptor units into alternating stacks has been studied extensively by the Iverson research group as well as others. As an extension of previous research in this area, novel conjugated donor/acceptor molecules made from …
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Elementary processes in layers of electron transporting Donor-acceptor copolymers : investigation of charge transport and application to organic solar cells
Donor-acceptor (D-A) copolymers have revolutionized the field of organic electronics over the last decade. Comprised of a electron rich and an electron deficient molecular unit, these copolymers facilitate the systematic modification of the material's optoelectronic properties. The ability to tune …
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Quantum mechanical analysis of donor-acceptor interactions in organometallic complexes and comparative analysis of class size and teacher experience on student satisfaction and learning
… functional and ab initio methods to analyze donor-acceptor complexes of transition metals. Chapter 1 gives background for the theories used in this work. In chapter 2, density functional theory (DFT) is used to investigate the geometries and metal-ligand bonding in nickel complexes of …
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Quantum Mechanical Analysis of Donor -Acceptor Interactions in Organometallic Complexes and Comparative Analysis of Class Size and Teacher Experience on Student Experience Satisfaction and Learning
Chapter 6 discusses the results of a year long research project studying student perceptions and success in two types of general chemistry courses. This study uses three ways to determine if student performance and satisfaction were different between the two types of sections: exam scores, …
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