Sökning: "Carbon"

Visar resultat 1 - 5 av 2095 avhandlingar innehållade ordet Carbon.

  1. 1. Carbon Nitride Characterization and Protein Interactions

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Torun Berlind; Linköpings universitet.; Linköpings universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : This thesis concerns synthesis and characterization of carbon-based materials and theinvestigation of the possible use, of a selection of these materials, in biomedicalapplications. Protein adsorption and blood plasma tests were used for this purposeutilizing a surface sensitive technique called spectroscopic ellipsometry. LÄS MER

  2. 2. Nanostructured carbon-based thin films prediction and design

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Cecilia Goyenola; Linköpings universitet.; Linköpings universitet.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon; carbon-based; thin films; fullerene-like; modeling; dft;

    Sammanfattning : Carbon-based thin films are a vast group of materials of great technological importance. Thanks to the different bonding options for carbon, a large variety of structures (from amorphous to nanostructured) can be achieved in the process of film synthesis. LÄS MER

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

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Anders M. Eklöf; Uppsala universitet.; [2008]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  4. 4. Carbon-based magnetic nanomaterials

    Detta är en avhandling från Umeå University

    Författare :Valeria Zagaynova; Umeå universitet.; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbon nanotube; fullerene; single molecular magnet; Mn12; graphite fluoride; nanoporous carbon; molecular magnetism; magnetic properties; SQUID magnetometry; x-ray diffraction; Raman spectroscopy; Materials Science; materialvetenskap;

    Sammanfattning : Magnetism of carbon-based materials is a challenging area for both fundamental research and possible applications. We present studies of low-dimensional carbon-based magnetic systems (fullerene-diluted molecular magnets, carbon nanotubes, graphite fluoride, and nanoporous carbon) by means of SQUID magnetometer, X-ray diffraction and vibrational spectroscopy, the latter techniques used as complementary instruments to find a correlation between the magnetic behaviour and the structure of the samples. LÄS MER

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

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

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

    Sammanfattning : 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. LÄS MER