Abstract
One of the most peculiar characteristics of dendritic macromolecules is their controlled molecular structure and orientation, which means that they have a practical application in achieving a highly organized molecular arrangement. We attempted to fabricate the G4-48PyP dendrimer Langmuir-Blodgett (LB) films containing 48 pyridinepropanol functional end group that could form a complex structure with metal ions. Also, we have investigated the surface activity at the air-water interface as well as the electrical properties for the monolayers of pure G4-48PyP dendrimer and its complex with Fe 2+ ions. The electrical properties of the ultra-thin dendrimer LB films were investigated by studying the current-voltage characteristics of metal/dendrimer LB films/metal (MIM) structure. The calculated conductivity σ values and barrier height Φ b values of pure G4-48PyP dendrimer and its complexes with Fe 2+ ions are 9.56×10 -16 and 1.46×10 -14 S/cm, 1.18 and 1.10 eV, respectively. As a result, the metal ion around G4-48PyP dendrimer can contribute to the formation of network structure among dendrimers and the change of electrical properties.
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