Extended polymerization in ABC-stacked C-70 fullerite

abstract

This letter reports on the extended polymerization occurring in ABC-stacked C-70 fullerite, which up to now was thought to occur only in the AB-stacked phase. Frustration effects on ABC close-packing of C-70 molecules were believed to prevent extended polymerization based on 2 + 2 cycloaddition bonds, but here we show that an extended polymeric phase is obtained at 10 GPa and 270 degrees C. Its structure, obtained by Rietveld analysis of the X-ray diffraction data combined with density functional theory methods, consists of zigzag chains running within the dense hexagonal (101) pyramidal planes. (C) 2014 Elsevier Ltd. All rights reserved.

keywords

PHOTOINDUCED POLYMERIZATION; PHASE-TRANSITIONS; SOLID C-70; C-60; POLYMERS; FILMS

subject category

Chemistry; Materials Science

authors

Marques, L; Skorokhod, Y; Soares, R

our authors

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