A New Superlattice of Cyclohexanethiol Self-assembled Monolayers on Au(111)Formed at a Low Solution Temperature

摘要

High-resolution scanning tunneling microscopy(STM)imaging revealed that cyclohexanethiols(CHTs)on Au(111)form high-density self-assembled monolayers(SAMs)with a(5 x 2√3)R35° superlattice at a low solution temperature of -20 deg C.This packing structure is comparable to a(5 x 2√10)R48° superlattice formed at room temperature.From this result,it was found that the two-dimensional structure of CHT SAMs on Au(111)was strongly influenced by the solution temperature,unlike alkanethiol SAMs.