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Patterned monolayers of neutral and charged functionalized manganese arene complexes on a highly ordered pyrolytic
Sang Bok Kim1, Robert D Pike, Jason S D'Acchioli
1Department of Chemistry, Brown University, Providence, RI 02912, USA.
Angewandte Chemie (International Ed. in English)
|January 29, 2009
Summary
Manganese complexes form complex, patterned monolayers on graphite surfaces. These ordered arrays result from specific molecular interactions, creating a 2D structure of manganese atoms.
Area of Science:
- Organometallic Chemistry
- Materials Science
- Surface Science
Background:
- Arene manganese tricarbonyl complexes are known for their unique electronic and structural properties.
- Self-assembly of organometallic compounds on surfaces is crucial for developing advanced materials.
- Understanding the interactions governing molecular assembly is key to controlling nanoscale patterns.
Purpose of the Study:
- To investigate the formation of patterned monolayers using specific arene manganese tricarbonyl complexes.
- To elucidate the driving forces behind the self-assembly of these complexes on highly ordered pyrolytic graphite (HOPG).
- To characterize the resulting 2D array of manganese species.
Main Methods:
- Synthesis of arene manganese tricarbonyl complexes: [Mn(eta(5)-2,5-didodecoxy-1,4-semiquinone)(CO)(3)] and [Mn(eta(6)-1,4-dioctyloxybenzene)(CO)(3)] BF(4).
- Deposition of complexes onto HOPG surfaces.
- Characterization of patterned monolayers using surface science techniques (e.g., scanning probe microscopy).
Main Results:
- Formation of well-defined, patterned monolayers of manganese complexes on HOPG.
- Identification of hydrogen-bonding, hydrophobic, and electrostatic interactions as key factors in pattern formation.
- Observation of an ordered 2D array of manganese atoms or ions within the monolayer.
Conclusions:
- Arene manganese tricarbonyl complexes can self-assemble into ordered monolayers on HOPG.
- The observed patterns are governed by a combination of intermolecular forces.
- This work demonstrates a method for creating ordered nanoscale arrays of metal-containing molecules.
