Angle-resolved XPS Studies of Self-assembled Monolayers on the Quantitative and Quanlitative Determination of Location of Function Groups and the Thickness of Monolayers

Self-Assembled Monolayers （SAMs） formed by molecular （Ⅰ） HS （CH₂） 10 COOH,（Ⅱ）HS（CH₂）₃OC₆H₄N=NC₆H₄（CH₂）₇CH₃ and （Ⅲ） HS （CH₂）₆HS on gold film are investigated by Angle-Resolved XPS.The thickness from S and N atom to the surface of SAMs,molecular orientation and tilt angle are determined in molecular （Ⅰ）and（Ⅱ）.We also find that when molecular（Ⅲ）is exposed to UV-light,the oxidetion of S atom is selective.The oxidetion reaction is mainly occured on the S atom in the bottom of the Monolayers.