Pressure-temperature phase diagram of the rotor-stator compound C60-cubane
2007 (English)In: Solid State Communications, ISSN 0038-1098, E-ISSN 1879-2766, Vol. 143, no 4-5, 208-212 p.Article in journal (Refereed) Published
When the rotor–stator compound C60·C8H8 is treated at temperatures above about 450 K under high-pressure conditions, fullerene-based copolymers are formed. Earlier results have shown the existence of two types of polymers, a “low-pressure” pseudo-cubic copolymer similar to that formed at atmospheric pressure, and a “high-pressure” phase tentatively identified as a pseudo-orthorhombic copolymer structurally based on the known low-temperature phase. In this communication we show that the reaction boundary between the polymers occurs at pressures near 1 GPa. From this result it follows that the slope of the cubic–orthorhombic phase line in the pristine material is 305 K GPa−1, significantly larger than the slope observed for the corresponding rotational transition in pure C60.
Place, publisher, year, edition, pages
2007. Vol. 143, no 4-5, 208-212 p.
Fullerenes, Raman spectroscopy, X-ray diffraction, high pressure, cubane, rotor-stator compound, fullerene co-polymer
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:umu:diva-16867DOI: 10.1016/j.ssc.2007.05.029OAI: oai:DiVA.org:umu-16867DiVA: diva2:156540