Search for dissertations about: "organic carbon"

Showing result 1 - 5 of 494 swedish dissertations containing the words organic carbon.

  1. 1. Lowcoordinated Silicon and Hypercoordinated Carbon Structure and Stability of Silicon Analogs of Alkenes and Carbon Analogs of Silicates

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anders M. Eklöf; Uppsala universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; silenes; zwitterionic silenes; silenolates; reverse polarization; natural resonance theory; hypervalent carbon; hypercoordinated carbon; thermolysis; lowcoordinated silicon; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Abstract : Quantum chemical studies on lowcoordinated group 14-16 compounds have been performed. This thesis focuses particularly on silenes influenced by reverse Siδ-=Cδ+ bond polarization. Hypercoordinated carbon compounds are also studied. READ MORE

  2. 2. Chemistry of Carbon Nanostructures Functionalization of Carbon Nanotubes and Synthesis of Organometallic Fullerene Derivatives

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Claes-Henrik Andersson; Uppsala universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbon nanotubes; Fullerenes; Purification; Functionalization; Organometallic complexes; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Abstract : This thesis is based on two main parts. The first part concerns purification and functionalization of carbon nanotubes (papers I-III), and the second part is related to the synthesis of organometallic fullerene derivatives (papers IV-VII):Two oxidative methods involving aqueous nitric acid were compared with respect to their capability to introduce carboxylic groups into single walled carbon nanotubes, and several literature methods for esterification and amidation of these groups have been evaluated with focus on efficiency and reproducibility in forming covalently functionalized products soluble in organic media. READ MORE

  3. 3. Fabrication and Functionalization of Graphene and Other Carbon Nanomaterials in Solution

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Erika Widenkvist; Uppsala universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Graphene; Functionalization; Carbon nanotubes; Carbon nanosheets; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi; Organisk kemi; Organic Chemistry;

    Abstract : In the last decades several new nanostructures of carbon have been discovered, including carbon nanotubes (CNTs), and the recently discovered 2-dimensional graphene. These new materials exhibit extraordinary and unique properties—making them extremely interesting both for fundamental science and for future applications. READ MORE

  4. 4. Design and Synthesis of 11C-Labelled Compound Libraries for the Molecular Imaging of EGFr, VEGFr-2, AT1 and AT2 Receptors Transition-Metal Mediated Carbonylations Using [11C]Carbon Monoxide

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ola Åberg; Uppsala universitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; [11C]carbon monoxide; isotopic labelling; PET; acrylamide; EGFR; VEGFR-2; 11C; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi; Organisk kemi; Organic Chemistry; Organisk farmaceutisk kemi; Organic Pharmaceutical Chemistry;

    Abstract : This work deals with radiochemistry and new approaches to develop novel PET tracers labelled with the radionuclide 11C.Two methods for the synthesis of 11C-labelled acrylamides have been explored. READ MORE

  5. 5. Photoinitiated Radical Carbonylation Using [11C]Carbon Monoxide 11C-Labelling of Aliphatic Carboxylic Acids, Esters, and Amides

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Oleksiy Itsenko; Uppsala universitet.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; 11C-labelling; radicals; carbonylation; carbon monoxide; solvent effects; sensitizers; sulfoxides; WAY-100635; PET; Organisk kemi; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Abstract : One-step photoinitiated free radical carbonylation was employed for the rapid (5–7 min) labelling of aliphatic carboxylic acids, esters, and amides with a short-lived positron emitter 11C (t½ = 20.3 min) at the carbonyl position. The labelled compounds were synthesized from alkyl iodides (0.05–0. READ MORE