The results also indicate that MTU is vertically adsorbed on Ag electrode surface via S atom, while ATU is adsorbed on the surface via S atom and the molecules leaned to the electrode surface.

• MTU以S端且垂直吸附在电极表面；ATU也以S端和表面发生化学吸附；但整个分子斜躺吸附在电极表面上.