The adsorption and bonding of ω-mercaptoalkanols on HNO3 etched copper

ω-Mercaptoalkanols (HO(CH2)nSH, n=2, 6, 10) could cleave and were chemisorbed in trans and gauche conformation on HNO3 etched copper foils to form self-assembled monolayers. The orientation of the molecules in the film was characterized by Fourier transform surface enhanced Raman scattering spectroscopy (FT-SERS0. In the liquid state the above compounds tend to be in the gauche conformation, however, in the adsorption state they inclined to be in the trans conformation. In the adsorption state the ratio of trans to gauche conformation increased with the chain length.