Sökning: "photoisomerization"

Visar resultat 1 - 5 av 18 avhandlingar innehållade ordet photoisomerization.

1. 1. Collision- and photon-induced dynamics of complex molecular ions in the gas phase

   Författare :Linda Giacomozzi; Henning Zettergren; Jason Greenwood; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PAHs; Porphyrins; Adenine; Flavins; Biomolecules; Collisions; Experiments; Reactions; Non-Statistical Fragmentation; Molecular Dynamics; Photon-Induced Fragmentation; Luminescence; Photoisomerization; Proton Transfer; fysik; Physics;

   Sammanfattning : In this thesis, I report experiments probing collision- and photon-induced molecular dynamics in the gas phase. Excited molecules formed in such interactions may relax by emitting electrons or photons, isomerization or fragmentation. LÄS MER

3. 2. Homochiral crystals for selective synthesis

   Författare :Theonitsa Kokoli; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Absolute asymmetric synthesis; total spontaneous resolution; optical activity; coordination compounds; coordination polymers; photoisomerization; enantioselective sulfide oxidation; single crystal X-ray crystallography; co-crystallization of diastereomers;

   Sammanfattning : Six new coordination compounds were prepared from monodentate sulfide ligands and copper(I) halides and their crystal structures were determined by single-crystal X-ray diffraction. The aim was to prepare coordination polymers that crystallize as conglomerates in order to use them in total spontaneous resolution. LÄS MER

4. 3. Cis-trans photoisomerization : mechanisms and catalysis

   Författare :Helene Jonsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

5. 4. 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. 5. Design, Synthesis and Evaluation of Photoswitches for Molecular Solar Thermal Energy Storage Systems

   Författare :Maria Quant; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Solar fuels; Norbornadiene; Tetracyclooctane.; Quadricyclane; Energy storage and release; Solar energy; Photoswitches; Molecular solar thermal energy storage; Diels-Alder reaction; Bicyclooctadiene; Energy conversion;

   Sammanfattning : To meet the future energy demands and handle climate changes, new sustainable energy sources must be developed. Over the last decades, great scientific progress on harvesting solar energy has been made, but storing the energy is still a challenge. LÄS MER