Search for dissertations about: "conjugated oligomer"

Showing result 1 - 5 of 9 swedish dissertations containing the words conjugated oligomer.

  2. 1. Computational Predictions of Conjugated Polymer Properties for Photovoltaic Applications

    Author : Svante Hedström; Beräkningskemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Conjugated polymers; density functional theory; organic photovoltaics; light-harvesting capabilities; quantum chemistry; absorption spectra; electronic structure; computational predictions;

    Abstract : Organic solar cells employing fullerenes blended with conjugated polymers as the main light-absorbing material have achieved power conversion efficiencies exceeding 10%. They hold promise as an alternative energy source with many advantages in terms of long-term sustainability and reduced greenhouse gas emissions. READ MORE

  4. 2. Synthesis and properties of pi-conjugated polymers for organic photovoltaics

    Author : Renee Kroon; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; organic photovoltaics; structure-property relationships; Conjugated polymers; energy level engineering;

    Abstract : Organic photovoltaics is a renewable energy technology able to solve global warming and the upcoming energy gap, issues that both originate from fossil fuel consumption. Out of all renewable energy sources, the Sun is the only source that produces enough energy to fulfill all our energy needs, now and in the future. READ MORE

  5. 3. Influence of Bridge Structures on the Electron Transfer in Donor-Acceptor Systems

    Author : Mikael Winters; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; molecular wire; electron transfer; porphyrin; conjugated oligomer;

    Abstract : In this Thesis, porphyrin-based donor-acceptor systems have been used to study photoinduced electron transfer processes. Principally, two different sets of systems have been investigated. READ MORE

  6. 4. Photoinduced Electron and Energy Transfer in Π-Conjugated Systems

    Author : Melina Gilbert Gatty; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fs spectroscopy; exciton coupling; conjugated porphyrin oligomers; ps spectroscopy; molecular wire; electron transfer; conformational analysis; self‒assembly; anthracene dendrimers; energy transfer; fluorescence anisotropy;

    Abstract : Photosynthesis is a fascinating process that provides food and oxygen. In this thesis, focus is on understanding and controlling the early processes of photosynthesis, namely photoinduced energy and electron transfer. READ MORE

  7. 5. Conformational and Dynamical Aspects of Conjugated Polymers and Oligomers of Interest for Photoluminescence

    Author : Mette Grage; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; femtosecond spectroscopy; conformations; anisotropy; excitation transfer; oligothiophene radical cations; MEH-PPV; Conjugated polymers; polythiophene; resonance Raman spectroscopy.; Chemistry; Kemi; Physics; Fysik;

    Abstract : Transient absorption laser spectroscopy and resonance Raman spectrscopy have been used to study conjugated polymers and oligomers. To extract more information the measurements have been compared to computer simulations and calculations. READ MORE