Sökning: "excited-state dynamics"

Visar resultat 1 - 5 av 49 avhandlingar innehållade orden excited-state dynamics.

  1. 1. Excited state dynamics in the strong coupling regime

    Författare :Jürgen Mony; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Strong exciton-photon coupling; Excited state dynamics; light-matter interactions; photoswitch; aggregated states;

    Sammanfattning : Strong exciton-photon coupling exhibits the possibility to modify photophysical and photochemical properties of organic molecules without changing their structure. This is due to the formation of hybrid light-matter states, called polaritons, which are created when the strong coupling regime is achieved. LÄS MER

  3. 2. Excited-state dynamics of small organic molecules studied by time-resolved photoelectron spectroscopy

    Författare :Ting Geng; Richard D. Thomas; Ben Whitaker; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; time-resolved photoelectron spectroscopy; excited-state dynamics; organic molecules; kemisk fysik; Chemical Physics;

    Sammanfattning : Ultra-violet and visible light induced processes in small organic molecules play very important roles in many fields, e.g., environmental sciences, biology, material development, chemistry, astrophysics and many others. Thus it is of great importance to better understand the mechanisms behind these processes. LÄS MER

  4. 3. Theoretical Studies of Ground and Excited State Reactivity

    Författare :Pooria Farahani; Marcus Lundberg; Hans Karlsson; Isabelle Navizet; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemical Reactivity; Computational Chemistry; Dynamics; Ground and Excited States; Chemiluminescence; Atmospheric Chemistry;

    Sammanfattning : To exemplify how theoretical chemistry can be applied to understand ground and excited state reactivity, four different chemical reactions have been modeled. The ground state chemical reactions are the simplest models in chemistry. To begin, a route to break down halomethanes through reactions with ground state cyano radical has been selected. LÄS MER

  5. 4. Excited state dynamics in low-dimensional perovskite nanocrystals

    Författare :Weihua Lin; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Two-dimensional perovskite; Ultrafast spectroscopy; Single crystal; Nanocrystals; Hot carrier cooling;

    Sammanfattning : Two-dimensional (2D) perovskites have emerged as promising building blocks for optoelectronic applications. To fabricate high-performance devices, the relation between the material structures and their function in terms of excited state and charge carrier dynamics need to be well understood. LÄS MER

  7. 5. Core Level Spectroscopy of Water and Ice

    Författare :Dennis Nordlund; Anders Nilsson; Martin Wolf; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; x-ray adsorption spectroscopy; photoemission spectroscopy; x-ray photoelectron spectroscopy; platinum; x-ray emission spectroscopy; density functional theory; hydrogen-bonded; H-bond; water; ice; electronic structure; excited state dynamics; proton dynamics; water adsorption; liquid water; Physics; Fysik;

    Sammanfattning : A core level spectroscopy study of ice and water is presented in this thesis. Combining a number of experiments and spectrum calculations based on density functional theory, changes in the local valence electronic structure are shown to be sensitive to the local H-bonding configurations. LÄS MER