High-pressure synthesis, structural and Raman studies of a two-dimensional polymer crystal of C60.
2000 (English)In: European Physical Journal B: Condensed Matter Physics, ISSN 1434-6028, Vol. 15, no 2, 253-263 p.Article in journal (Refereed) Published
Two-dimensional polymerisation of a C60 single crystal has been obtained under high-pressure high temperature conditions (700 K - 2 GPa). Crystalline order is preserved but the crystal splits into variants (orientational domains). The analysis of X-ray diffraction and Raman spectroscopy data reveals that the polymer crystal is primarily tetragonal with some admixture of rhombohedral phase. Furthermore, Raman spectroscopy gives evidence for additional C60-C60 dimers, which are probably disordered. For the tetragonal phase, it is shown that successive polymer layers are rotated by about the stacking axis, according to the P42/mmc space group symmetry. The structure of the rhombohedral phase is also clarified. The role of the interlayer interactions in stabilising the two-dimensional polymer phases of C60 is discussed.
Place, publisher, year, edition, pages
Springer , 2000. Vol. 15, no 2, 253-263 p.
Fullerenes, C60, high pressure synthesis, fullerene polymer, two-dimensional polymer, tetragonal structure, rhombohedral structure, X-ray diffraction, single crystal, Raman spectroscopy, orientational domain, variant
Condensed Matter Physics
Research subject Physics
IdentifiersURN: urn:nbn:se:umu:diva-22606DOI: 10.1007/PL00011040OAI: oai:DiVA.org:umu-22606DiVA: diva2:217301