writer：Xiaolin Lu*, John N. Myers, Zhan Chen*
keywords：Molecular ordering, SFG, PS, interface
source：期刊
specific source：Langmuir 2014, 30, 9418-9422
Issue time：2014年
Understanding molecular structures of buried polymer/metal interfaces is important for the design and development of polymer adhesives used in advanced microelectronic devices and polymer anti-corrosion coatings for metals. The buried interfacial molecular structure between polystyrene (PS) and silver (Ag) was investigated using infrared-visible sum frequency generation (SFG) vibrational spectroscopy via a “sandwiched” sample geometry. SFG resonant signals from the phenyl C-H stretching vibrational modes were detected from the PS/Ag interface, suggesting that the PS phenyl groups at this buried polymer/metal interface are ordered. Spectral analysis indicated that the phenyl groups at the buried PS/Ag interface tilt towards the interface, pointing away from the Ag side.
http://pubs.acs.org/doi/abs/10.1021/la502037h