Sökning: "Direct electron transfer"

Visar resultat 1 - 5 av 56 avhandlingar innehållade orden Direct electron transfer.

  1. 1. Tuning of Energy and Electron Transfer Rates in Donor-Bridge-Acceptor Systems

    Författare :Karin Pettersson; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron transfer; electronic coupling; paramagnetic species; superexchange; Donor-bridge-acceptor system; spectroscopy.; porphyrin; sequential electron transfer; Förster energy transfer; energy transfer;

    Sammanfattning : The intramolecular processes of Donor-Bridge-Acceptor (D-B-A) systems have been investigated by spectroscopic methods. The systems consist of porphyrin donors and acceptors linked by oligo-p-phenyleneethynylene bridges. LÄS MER

  2. 2. The Fate of Electronically Excited States Ultrafast Electron and Energy Transfer in Solvated Donor-Acceptor Systems

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Staffan Wallin; Uppsala universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Electron transfer; Energy transfer; Anisotropy; Porphyrin; Ruthenium tris-bipyridine; Superexchange; Supramolecular; Donor-Acceptor; Charge transfer state; S2 state; Ultrafast; Fysikalisk kemi; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi;

    Sammanfattning : Processes where a molecule absorbs visible light and then disposes of the excess energy via electron/energy transfer reactions have an important role both in nature (e.g. in photosynthesis) and in many technical applications (e.g. LÄS MER

  3. 3. Direct electron transfer based biofuel cells : operating in vitro and in vivo

    Detta är en avhandling från Malmö University, Faculty of Health and Society

    Författare :Magnus Falk; Malmö University.; Malmö University.; [2014]
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Sciences; biofuel cell; direct electron transfer; enzymes; gold nanoparticles; implantable biomedical devices;

    Sammanfattning : The focus of this thesis is the development and design of direct electron transfer based enzymatic fuel cells, with the possible use in biomedical applications. For biodevice fabrication, macro- and micro-scaled nanostructured gold electrodes were fabricated and characterized in detail, employing electrochemical techniques, as well as atomic force microscopy and scanning electron microscopy. LÄS MER

  4. 4. Heterogeneous electron transfer studies with ligninolytic redox enzymes and living bacteria. Applications in biosensors and biofuel cells

    Detta är en avhandling från Lund University

    Författare :Vasile Coman; Lund University.; Lunds universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cellobiose dehydrogenase; direct electron transfer; mediated electron transfer; self-assembled monolayer; flow injection analysis; amperometric biosensor; E. coli; succinate:quinone reductase; biofuel cell; B. subtilis; whole-cell biosensor;

    Sammanfattning : The catalytic properties and the inter-domain electron transfer of cellobiose dehydrogenase (CDH) from the ascomycete fungus Myriococcum thermophilum adsorbed on graphite and thiol (SAM) modified gold electrodes were investigated using cyclic voltammetry, flow injection amperometry and UV-Vis spectroelectrochemistry. The fabrication and characterisation of a noncompartmentalised, mediator and cofactor free glucose–oxygen biofuel cell well-operating in glucose-containing buffers and human blood serum was performed. LÄS MER

  5. 5. Graphene Hot-electron Transistors

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Sam Vaziri; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Graphene; hot-electron transistors; graphene base transistors; GBT; cross-plane carrier transport; tunneling; ballistic transport; heterojunction transistors; graphene integration; graphene transfer; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : Graphene base transistors (GBTs) have been, recently, proposed to overcome the intrinsic limitations of the graphene field effect transistors (GFETs) and exploit the graphene unique properties in high frequency (HF) applications. These devices utilize single layer graphene as the base material in the vertical hot-electron transistors. LÄS MER