Sökning: "fullerene c60"

Visar resultat 1 - 5 av 35 avhandlingar innehållade orden fullerene c60.

1. 1. Fullerene γ-Cyclodextrin Complexes

   Författare :Thomas Andersson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; C60; a-cyclodextrin; aggregates; FAB LSIMS; Buckminsterfullerene; g-cyclodextrin; b-cyclodextrin; ring-currents; fullerene; host-guest; C70;

   Sammanfattning : The fullerenes, C60 and C70, can form inclusion complexes with .gamma.-cyclodextrin as the host. The complexes are formed by refluxing a water solution of . LÄS MER

3. 2. Hydroarylation of Fullerene C60 Using Arylboronic Acids via Rhodium Catalysis : Improving the Outcomes and Simplifying the Conditions

   Författare :Merve Ergun Dönmez; Helena Grennberg; Luke Odell; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fullerene; C60; hydroarylation; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

   Sammanfattning : Hydroarylation with arylboronic acids is one of the functionalization methods for synthesis of modified fullerenes. In this work, we provide a fast and reproducible one-phase method for hydroarylation of fullerene using boronic acids and an analytical HPLC method that efficiently separates unreacted C60 and product from a hydroarylation reaction mixture as well as a fulleropyrrolidine reaction mixture. LÄS MER

4. 3. Fabricating designed fullerene nanostructures for functional electronic devices

   Författare :Christian Larsen; Ludvig Edman; René Janssen; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Organic electronics; Organic field-effect transistor; Organic photovoltaics; Fullerene C60; PCBM; Photochemical transformation; Resist-free lithography; C60 Nanorod; Solution processable; nanomaterials; nanomaterial; Physical Chemistry; fysikalisk kemi; fysik; Physics; Materials Science; materialvetenskap;

   Sammanfattning : A long-term goal within the field of organic electronics has been to developflexible and functional devices, which can be processed and patterned withlow-cost and energy-efficient solution-based methods. This thesis presents anumber of functional paths towards the attainment of this goal via thedevelopment and demonstration of novel fabrication and patterningmethods involving the important organic-semiconductor family termedfullerenes. LÄS MER

5. 4. Photo-polymerization as a tool for engineering the active material in organic field-effect transistors

   Författare :Andrzej Dzwilewski; Ludvig Edman; Xavier Crispin; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Field-effect transistor; photo-polymerization; PCBM; C60; Fullerene; Physics; Fysik; fasta tillståndets fysik; Solid State Physics;

   Sammanfattning : The emergence of organic semiconductors is exciting since it promises to open up for straightforward and low-cost fabrication of a wide range of efficient and novel electronic devices. However, in order for this promise to become reality it is critical that new and functional fabrication techniques are developed. LÄS MER

7. 5. Electron transfer and fragmentation in fullerene collisions

   Författare :Henning Zettergren; Henrik Cederquist; Paul-Antoine Hervieux; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fullerene; Physics; Fysik;

   Sammanfattning : In this thesis, we present results from detailed gas phase studies of intrinsic properties of fullerenes (C60) and clusters of fullerenes as probed by slow multiply charged (atomic or cluster) ions in combination with coincidence time-of-flight mass spectrometry. We have investigated the structures, stabilities, and the electron mobilities of multiply charged clusters of fullerenes, (C60)nr+ (r=2-5). LÄS MER