Sökning: "photochemical"

Visar resultat 26 - 30 av 137 avhandlingar innehållade ordet photochemical.

  1. 26. Synthesis and photochemical properties of cis-trans isomeric 1,2-di(9-phenanthryl)ethylene and 9- phenanthrylpropenones

    Författare :Annika Vannerberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phenanthrene; 2-Di 9-phenatryl ethylene; 9-phenanthryacetalehyde; 10-dihydrophenanthrene; 9-phenanthraldehyde; trans-9-phenanthrylpropene; reduction with LiAlH4< sub>; cis-1; cycloaddition; 9-hydromethyl-10- 9-phenathrylmethyl -9; trans-cis isomerization; dehydrocyclization;

    Sammanfattning : .... LÄS MER

  3. 27. Comparison of experimentally and theoretically determined oxidation and photochemical transformation rates of some organohalogens to promote prediction of persistence

    Författare :Patricia Moreira Bastos; Åke Bergman; Leif Kronberg; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oxidation; Persistence; Photolysis; QSPR; BFRs; PBDEs; OH-PBDEs; Chemistry; Kemi; miljökemi; Environmental Chemistry;

    Sammanfattning : The diversity of choices we have to make everyday influence our environment and ourselves in more ways than most of us realise. Anthropogenic substances, such as flame retardants, date back as early as 450 BC when the Egyptians used alum to reduce flammability. LÄS MER

  4. 28. Synthesis and photochemical properties of 1,3-Di-9-anthrylalkanols, 1,3.Di-9-anthrylalkanones, and related enol methyl ethers

    Författare :Kosrat A. Amin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 29. Unconventional Modulation of Diarylethene Photoswitches

    Författare :Wera Larsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; photochromic molecules; photochemistry; photon upconversion; molecular photoswitches; triplet-triplet annihilation; diarylethene; nanocrystals; triplet sensitization;

    Sammanfattning : Light can be manipulated and modulated to fit a particular need or application, such as overcoming a spectral mismatch when facilitating a high energy photochemical reaction. This can be of use in various applications, including solar energy conversion and biological contexts. LÄS MER

  7. 30. Accumulative Charge Separation in Photocatalysis : From Molecules to Nanoparticles

    Författare :Mariia Pavliuk; Jacinto Sá; Leif Hammarström; Gary Brudvig; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Accumulative charge separation; Electron transfer; Plasmon dynamics; Time-resolved spectroscopy; Photocatalysis.; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Sammanfattning : Photochemical energy conversion into solar fuel involves steps of light absorption, charge separation and catalysis. Nature has taught us that the effective accumulation of redox equivalents and charge separation are the key steps in sunlight conversion. LÄS MER