Search for dissertations about: "CHARGE SEPARATION"

Showing result 1 - 5 of 129 swedish dissertations containing the words CHARGE SEPARATION.

  1. 1. Extending Photoinduced Charge Separation. Molecular-semiconductor assemblies for solar energy conversion

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Valeria Saavedra; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Artificial photosynthesis; Back-electron transfer; Ruthenium complexes.; Dye-sensitized; Charge recombination; Charge separation; Conduction band mediated;

    Abstract : The conversion of solar energy into chemical energy by harvesting visible-light with synthetic molecules presents several scientific and technological challenges. This thesis is dedicated to the investigation of approaches to long-lived charge separation, one of the crucial aspects for the photochemical generation of solar fuels. READ MORE

  2. 2. Aspects of Optimisation of Separation of Drugs by Chemometrics

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Valérie Harang; Uppsala universitet.; [2003]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical chemistry; optimisation; separation; chemometrics; high performance liquid chromatography; electrodriven techniques; microemulsion electrokinetic chromatography; statistical experimental design; molecular modelling; chiral separation; cellobiohydrolase; Farmaceutisk kemi; PHARMACY Pharmaceutical chemistry; FARMACI Farmaceutisk kemi;

    Abstract : Statistical experimental designs have been used for method development and optimisation of separation. Two reversed phase HPLC methods were optimised. READ MORE

  3. 3. Dynamics of Excitation Transfer and Charge Separation in Polymeric Semiconductors

    University dissertation from Arvydas Ruseckas, Chemical Physics, Chemical Center, Lund University

    Author : Arvydas Ruseckas; Lunds universitet.; Lund University.; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Anisotropy; Photoinduced absorption; Femtosecond spectroscopy; Polythiophene; Conjugated polymers; Donor-Acceptor Complexes; Carbazole; Charge separation; Excitation transfer; Recombination; Physics; Fysik;

    Abstract : Dynamics of optically excited electronic states have been studied in solid films and solutions of semiconducting polymers and model compounds. Transient absorption, monitored in the spectral range from 0.9 eV to 2.5 eV with a time resolution of about 100 fs, was the main experimental technique. READ MORE

  4. 4. Studies of Charge Separation in Molecular and Molecular-Inorganic Materials Assemblies for Solar Energy Conversion

    University dissertation from Arvydas Ruseckas, Chemical Physics, Chemical Center, Lund University

    Author : Valeria Saavedra; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; water oxidation; charge-separation; photoinduced electron transfer; solar fuel; dye-sensitized;

    Abstract : Conversion of solar energy and its storage in the form of chemical bonds is a current scientific and technological challenge. Different approaches to achieve light-harvesting followed by efficient charge separation are the focus on this thesis. READ MORE

  5. 5. Zwitterionic Separation Materials for Liquid Chromatography and Capillary Electrophoresis Synthesis, Characterization and Application for Inorganic Ion and Biomolecule Separations

    University dissertation from Arvydas Ruseckas, Chemical Physics, Chemical Center, Lund University

    Author : Wen Jiang; Umeå universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Zwitterionic; stationary phase; separation; liquid chromatography; capillary electrophoresis; sulfobetaine; modification; covalently bonded; graft polymerization; ζ-potential; Analytisk kemi; NATURAL SCIENCES Chemistry Analytical chemistry; NATURVETENSKAP Kemi Analytisk kemi;

    Abstract : Liquid Chromatography (LC) and Capillary Electrophoresis (CE) are modern analytical techniques that play very important roles in many areas of modern science such as life science, biotechnology, biomedicine, environmental studies, and development of pharmaceutics. Even though these two techniques have existed and been subjected to studies for several decades, the developments of new separation materials for them are still very important till now in order to meet the different new demands for improvement from other disciplines in science. READ MORE