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Showing 1 to 16 of 16 for “"Conjugated System"”.
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The Preparation of: 1. 1-(p-Methoxyphenyl)-2,6-dicarbethoxy-5-amino-cyclohexenone-3. 2. 1-(p-Methoxyphenyl)-2,6-dicarbethoxy-4-cinnamoyl-cyclohexane-dione-3,5. 3. diidodo derivative of 1-(p-Hydroxyphenyl)-2,6-dicarbethoxy-cyclohexane-dione-3,5.
… A heterocyclic, or an aromatic group, or a conjugated system have the same effect.
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Borafluorenes and polyborafluorenes boron doped varients of fluorene
… reactions. This incorporation of boron into a conjugated system imparted Lewis acidic and electron deficient properties into a conjugated system. It is our hope that this will dope fluorene and create novel n-type semiconductors. A novel polymer of borafluorene, poly(9-borafluorene) (P9BF) was …
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DERIVATIVES OF 2-BENZYLIDENECYCLOHEXANONE AS POTENTIAL ANTINEOPLASTIC AGENTS
… to study the degree of coplanarity of the conjugated system for some of the benzylidene derivatives. The mass spectra of the substituted (E)-2-benzylidenecyclo-hexanones and the substituted (E,E)-2,6-bis-benzylidenecyclohexanones were examined in detail. One of the major fragmentation …
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A valence bond for several perturbations
… spectra of molecules related to a parent conjugated hydrocarbon molecule. A spectral perturbation reflects the change in pi electron transition energy of the parent hydrocarbon as a result of heteroatom replacement of one or more carbon atoms or introducing substituents. Such spectral …
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Preparation of benzoenyne -allenes, enyne -isocyanates and enyne -carbodiimides and their applications in the synthesis of polycyclic aromatic hydrocarbons and heterocycles
… to the efficient assembly of the phenanthrene system. The buttressing effects due to the indeno-fused rings and the two tert-butyl groups at the 1- and 8-positions are responsible for increasing the activation barrier for the helix inversion of the resulting 4,5-diarylphenanthrenes.;Thermolysis …
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FROM SYNTHESIS TO APPLICATION:PORPHYRINS AS VERSATILE COMPOUNDS IN ENERGY, SENSING, AND CATALYSIS
… forming a flat macrocycle with an extensive conjugated system comprising 18 π-electrons. Their central cavity readily accommodates metal cations, forming stable complexes with transition metal ions. This PhD Thesis delves into the synthesis, characterization, and varied applications of …
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Synthesis and functionalization of novel meso-substituted tetrabenzotriazaporphyrins
… TBTAPs has been achieved. Expansion of the π-conjugated system of TBTAPs has been attempted as first experimental examinations in this field through several chemical and photochemical cyclisation methods, but the desired products were not isolated. Finally, transformations of the …
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Exciton behaviour at organic solar cell interfaces
… to investigate several oligomer-fullerene systems. In order to study the potential energy surfaces guiding the dynamics of electron transfer, the nuclear and electron dynamics of large systems need to be simulated. To make these calculations computationally feasible, a mixed quantum …
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Synthetic efforts toward the eastern hemisphere of theonellamide C
… condensation. Results from individual model systems indicated that the levels of diastereo- and enantioselectivity for each approach were not acceptable. The most recent approach to Apoa and Aboa utilized a key Horner-Wadsworth Emmons reaction followed by two conceptual sets of protecting …
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Thiophene Based Semiconductors: Synthesis and Characterizations
… pure [Beta]-substituted sexithiophene were systematically studied. It was found that [Beta, Beta´]-DH6T possesses moderate PR-TRMC charge carrier mobility, but rather low field-effect mobility. The investigation showed that such a poor macroscopic electrical properties of [Beta, Beta´]-DH6T …
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Conjugation of Anti-HER2 Monoclonal Antibody onto a PLGA-PEG Nanoparticle Using CuAAC Click Chemistry
… click chemistry. The targeting ability of the conjugated system was analyzed via flow cytometry and fluorescent microscopy to determine its effectiveness and activity.</p> <p>Perhaps the most important pieces of information that will allow for a controlled system are being able to determine the …
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Determining The Excited State Properties of Novel Aryleneethynylenes
… of phenyleneethynylenes. The parent of the novel systems presented here, 1,4-bis(phenylethynyl)benzene (BPEB), is an ex- tended π–conjugated system, known for its interesting structural, optical and elec- tronic properties. Derivatives of this system have demonstrated great potential in the field …
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Tailoring Fluoride/Fluorine Bond Activity for High-Energy Li and Li-ion Batteries
… that underlie electrochemical energy storage systems is of fundamental and practical importance to improving mobility, autonomy, medical devices and electronics. Most of the cathode materials developed so far are oxide-based: all commercial Li-ion cathodes utilize lithium transition metal …
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Novel Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes
… been opened up. For white emission monochrome systems of the three primary colours red, green and blue need to be combined. The major issue from the materials’ point of view is still the lack of stable host-emitter systems for blue emission. This thesis deals with the development of new host …