Polymeric fullerenes: from C60 to C70
1999 (English)In: Electronic properties of novel materials - science and technology of molecular nanostructures: XIII international winterschool, Kirchberg, Tirol, Austria, February - March 1999 / [ed] Hans Kuzmany, Woodbury, NY: American Institute of Physics (AIP), 1999, 12-15 p.Conference paper (Refereed)
For the first time polymerization of both powder and single crystals of C70 fullerene was established after their subjection to high pressure (1.1-2.0 GPa) at elevated temperature (500-580 K). High-resolution capacitance dilatometry, FTIR/Raman spectroscopy and thermal conductivity were employed to characterize the polymeric phase of C70. The results demonstrate drastic changes in the physical properties of C70 on polymerization. We report on a reverse transformation to the monomeric state on heating the polymer to 500 K at ambient pressure. The activation energy of depolymerization was determined to be 1.8(1) eV. We discuss our results in terms of existing structural models for polymerization of C70 and compare the physical properties of C70 and C60 polymers.
Place, publisher, year, edition, pages
Woodbury, NY: American Institute of Physics (AIP), 1999. 12-15 p.
, A I P Conference Proceedings Series, ISSN 0094-243X ; 486
Research subject Fysik
IdentifiersURN: urn:nbn:se:ltu:diva-35571DOI: 10.1063/1.59770Local ID: a25e6370-f3fa-11db-ac9f-000ea68e967bISBN: 1563969009OAI: oai:DiVA.org:ltu-35571DiVA: diva2:1008824
International Winterschool on Electronic Properties of Novel Materials : 27/02/1999 - 06/03/1999
Upprättat; 1999; 20070426 (ysko)2016-09-302016-09-30