Chain-length effects on conformations of methyl methacrylate-oligomer thin films on an Au(111) substrate.
Molecular dynamics simulations were employed to investigate chain-length effects on conformations of methyl methacrylate (MMA)-oligomer thin films on an Au(111) substrate. Some observations were obtained from the present research. For short chain films, there is a sharp peak in the density profile of the MMA monomers for the adsorption region and the thin films exhibit a flattened conformation in the adsorption and the surface regions. For long chain films, however, there is no sharp peak in the whole density profile and a snake-like conformation appears in the adsorption region, which shrinks and convolutes gradually in the bulk region and even more in the surface region of the thin film.
Department of Aircraft Engineering, Air Force Institute of Technology, Kaohsiung 82063, Taiwan, R.O.C.
Ming-Liang
ML
Liao
Wen-Jay
WJ
Lee
Shin-Pon
SP
Ju
Jee-Gong
JG
Chang
Ching-Ho
CH
Cheng