Sökning: "triplet state"

Visar resultat 6 - 10 av 77 avhandlingar innehållade orden triplet state.

  1. 6. Catalysis of Quantum Chain Photoisomerizations: Calculations of Triplet Energy Surfaces and Measurements of Quantum Yields

    Författare :Maria Brink; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; triplet state; density functional theory; potential energy surface; cis-trans isomerization; adiabatic isomerization; catalysis;

    Sammanfattning : Triplet state cis-trans photoisomerizations of olefins is the theme of this thesis, and the goal is to make the isomerizations as efficient as possible. The shape of the triplet potential energy surface (T1 PES) is essential for this, and the possibility of calculating these T1 PESs for two smaller olefins, using the computationally inexpensive density functional theory (DFT) methods, was investigated. LÄS MER

  3. 7. Synthesis and Photophysical Characterization of Annihilator-Sensitizer Pairs for Triplet-Triplet Annihilation Based Photon Upconversion

    Författare :Victor Gray; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Triplet-Triplet Annihilation; Photon Upconversion; Anthracene;

    Sammanfattning : Transitioning to a future society, independent of fossil fuels, will denitely require the use of solar radiation for power and fuel production. Due to energy mismatch betweendevice absorption and the broad band irradiation provided by the sun there are severe limitations to how efficient devices for direct conversion of solar radiation can be. LÄS MER

  4. 8. Triplet state cis-trans photoisomerizations : catalysis and calculations

    Författare :Maria Brink; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 9. Transfer of triplet state energy in fluid solutions

    Författare :Kjell Sandros; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  7. 10. Systematic Studies of Triplet Annihilating Species for Photochemical Upconversion

    Författare :Axel Olesund; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; triplet-triplet annihilation; solar energy conversion; photochemical upconversion;

    Sammanfattning : With climate change already setting new temperature records and causing more extreme weather events, transitioning to clean and renewable energy sources is more urgent than ever. Solar energy harvesting arguably holds the most promise with the abundance of terrestrial sunlight available. LÄS MER