Dispersion of metallofullerene Y@C82 on bare, C60-modified, and iodine-modified Au(111) surfaces investigated with ECSTM.
Two-dimensional (2D) assembling behaviors of the endohedral metallofullerene Y@C(82) on bare, C(60)-modified, and iodine-modified Au(111) surfaces have been investigated in 0.1 M HClO(4) solution employing electrochemical scanning tunneling microscopy (ECSTM). The results show that Y@C(82) molecules are mobile and aggregate to the terrace edges on bare and C(60)-modified Au(111) surfaces, but monodispersion of the Y@C(82) molecules is achieved on the iodine-modified Au(111) surface. The improvement of Y@C(82) dispersion on an iodine-modified gold surface is due to the strong Y@C(82)-substrate interactions. The modified-substrate method provides an effective strategy to disperse endohedral metallofullerenes.
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China.
Gui-Jin
GJ
Su
Li-Hua
LH
Gan
Zhi-Yong
ZY
Yang
Ge-Bo
GB
Pan
Li-Jun
LJ
Wan
Chun-Ru
CR
Wang