STM Studies of LB Deposited Alkyl Substituted Polyaniline and Its Corresponding Monomer
FLORIDA UNIV GAINESVILLE DEPT OF CHEMISTRY
Pagination or Media Count:
STM investigations were carried out on monolayers of polyo- pentadecyl aniline, o-pentadecyl aniline monomer and p-hexadecyl aniline. The polymer was prepared by Langmuir polymerization on a 0.1 M H2SO4 sub phase, containing ammonium persulfate as the oxidizing agent. Monolayers of all the compounds were transferred by the LB technique from the airliquid interface to a MoS 2 substrate. After annealing, molecular resolution images were obtained for all three compounds. The o-pentadecyl aniline monomer showed a decreased mean molecular area on the MoS 2 surface, compared to that at the liquidair interface, while the polymer images showed similar packing at both interfaces. The p-hexadecyl aniline showed similar ordering on the substrate as the ortho substituted monomer. The polymer images showed evidence of backbone connectivity. After annealing all monolayers showed high positional and orientational order.
- Physical Chemistry
- Polymer Chemistry
- Electricity and Magnetism