Ordering mechanism in high-pressure polymerization of C-60: Avoiding geometrical frustration by stress-driven bond selection

abstract

The mechanism of bond ordering in high-pressure C-60 polymerization was clarified by following the polymerization process through in situ synchrotron angular-dispersive diffraction. The bonding directions correspond to the maximum applied stress directions and are therefore selected by stress. The bond-selecting stress field prevents the isotropic propagation of the polymerization in three-dimensional space, which would give a disordered frustrated structure as in photopolymerization, and leads to an ordered arrangement of polymerized molecules that causes a symmetry reduction.

keywords

CRYSTAL; PHASE; DIMERIZATION; FULLERENE; TUNGSTEN; DETECTOR; DIAMOND; SYSTEM; STRAIN; STATE

subject category

Physics

authors

Marques, L; Mezouar, M; Hodeau, JL; Nunez-Regueiro, M

our authors

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