Sökning: "cis trans-isomerization"
Visar resultat 1 - 5 av 14 avhandlingar innehållade orden cis trans-isomerization.
1. Experimental and Theoretical Studies of Cis-Trans Photoisomerizations and Conditions for Effective Catalysis
Sammanfattning : Triplet-sensitized cis-trans photoisomerizations have been investigated both experimentally and theoretically. Mapping of the reaction path for isomerization of 1,4-bis(1-propenyl)benzene (1) on the triplet state energy surface has been done by quantum yield measurements and laser flash photolysis. LÄS MER
2. Catalysis of Quantum Chain Photoisomerizations: Calculations of Triplet Energy Surfaces and Measurements of Quantum Yields
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. Thiol−ene Coupling of Renewable Monomers : at the forefront of bio-based polymeric materials
Sammanfattning : Plant derived oils bear intrinsic double-bond functionality that can be utilized directly for the thiol–ene reaction. Although terminal unsaturations are far more reactive than internal ones, studies on the reversible addition of thiyl radicals to 1,2-disubstituted alkenes show that this is an important reaction. LÄS MER
4. A flash photolysis study of the thermal cis-trans isomerization of some aromatic Schiff bases in solution
Sammanfattning : .... LÄS MER
5. Thermal cis-trans isomerization in the vapour phase of stilbene, azobenzene, N-benzylideneaniline and some of their derivatives : a flash photolysis study
Sammanfattning : .... LÄS MER