Comparative study of pressure-induced polymerization of C60 nanorods and single crystals

• In this paper, we report a comparative study of pressure-induced polymerization in C60 nanorods and bulk single crystals, treated simultaneously under various pressures and temperatures in the same experiment. For both materials, orthorhombic, tetragonal and rhombohedral phases have been produced under high pressure and high temperature. The structures have been identified and compared between the two sample types by Raman and photoluminescence spectroscopy. There are differences between the Raman and photoluminescence spectra from the two types of materials for all polymeric phases, but especially for the tetragonal phase. From the comparison between nanorods and bulk samples, we tentatively assign photoluminescence peaks for various polymeric phases.

Nyckelord

C60

polymer

nanorod

Raman scattering

Photoluminescence

orthorhombic

tetragonal

rhombohedral

high pressure

NATURAL SCIENCES Physics Condensed matter physics

NATURVETENSKAP Fysik Kondenserade materiens fysik

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art (ämneskategori)

ref (ämneskategori)