Sökning: "Oligomers"

Visar resultat 26 - 30 av 176 avhandlingar innehållade ordet Oligomers.

1. 26. Conjugated Porphyrin Oligomers - Influence of Conformation and Topology on the Electronic Communication

   Författare :Joakim Kärnbratt; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

3. 27. Innate Confinement Effects in PCL Oligomers as a  Route to Confined Space Crystallisation

   Författare :Nima Sanandaji; Ulf W. Gedde; Mikael Hedenqvist; Lars Kloo; Ulrica Edlund; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Crystallisation; Polycaprolactone; PCL; Confined state crystallisation; Metastable Phases; Chemistry; Kemi;

   Sammanfattning : In this work, an in-depth analysis of crystalline characteristics has been performed for a unique set of strictly monodisperse poly-ε-caprolactone (PCL) oligomers. The molecules have different sets of end groups with various degrees of bulkiness and hydrogen bonding potential, affecting their aptitude to pack in ordered crystal structures. LÄS MER

4. 28. Conformational and Dynamical Aspects of Conjugated Polymers and Oligomers of Interest for Photoluminescence

   Författare :Mette Grage; Kemisk fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; femtosecond spectroscopy; conformations; anisotropy; excitation transfer; oligothiophene radical cations; MEH-PPV; Conjugated polymers; polythiophene; resonance Raman spectroscopy.; Chemistry; Kemi; Physics; Fysik;

   Sammanfattning : Transient absorption laser spectroscopy and resonance Raman spectrscopy have been used to study conjugated polymers and oligomers. To extract more information the measurements have been compared to computer simulations and calculations. LÄS MER

5. 29. Making Analogues of Tröger's Base – Fused oligomers, endo/exo isomers and twisted amides

   Författare :Josep Artacho Ruiz; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The centenarian Tröger’s base (TB) was envisaged as scaffold for the construction of tubular-shaped cleft molecules due to its the remarkable structural properties. This endeavor started with the synthesis of the three possible diastereomers of a linear symmetrically fused tris-TB analogue, the anti-anti, the syn-syn, and the syn-anti. LÄS MER

7. 30. Influence of Conformations and Geometries on the Photophysical Properties of Conjugated Porphyrin Oligomers

   Författare :Joakim Kärnbratt; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER