CÁC BÀI BÁO KHOA HỌC 01:54:42 Ngày 06/12/2019 GMT+7
Bond switching from two- to three-dimensional polymers of C60 at high pressure

In situ high pressure x-ray diffraction experiments revealed that a transformation from the two-dimensional (2D) tetragonal C60 polymer to a three-dimensional (3D) polymer takes place via a highly anisotropic deformation of C60 molecules along the c axis, as an irreversible first-order transformation above 20 GPa. In the 3D polymer phase, the 2+2 bonds remain in the 2D plane, while neighboring layers are connected by the 3+3 bonds. The bulk modulus of the 3D polymer was 407 GPa, being slightly smaller than that of diamond.


 Chi D.H., Iwasa Y., Takano T., Watanuki T., Ohishi Y., Yamanaka S.
   824.pdf    Gửi cho bạn bè
  Từ khóa : alcohol; carbon; diamond; helium; methanol; polymer; anisotropy; article; chemical bond; chemical modification; chemical structure; molecule; polymerization; pressure; X ray diffraction