C60 tetragonal crystal sheet grown from evaporated C60 solution

Abstract

C60 tetragonal crystal sheets (C60TCS) were selectively synthesized on different substrates through evaporation of chloroform, which was used as the solvent of C60. Structural analysis results indicated that C60TCS, with lateral sizes in microns, was a single crystal with a face-centered cubic (fcc) lattice structure and a larger Bragg d-spacing than that of pristine C60. The existence of residual chloroform in C60TCS might partake in the C60 lattice sites through interaction between C60 and CHCl₃. C60 could also form hexagonal sheets when CCl₄ or the mixture of CHCl₃ and CCl₄ in a volume ratio of 3 : 4 was used as the solvent.