Nanostructured Thin Films Obtained from Fischer Aminocarbene Complexes

Area of Science:

• Organometallic Chemistry
• Materials Science
• Supramolecular Chemistry

Background:

• Amphiphilic organometallic complexes offer unique electronic and self-assembly properties.
• Push-pull systems with donor-acceptor moieties are crucial for advanced materials.

Purpose of the Study:

• Synthesize novel amphiphilic organometallic complexes.
• Investigate their self-assembly at the air-water interface.
• Evaluate their potential for organic electronic devices.

Main Methods:

• Synthesis of four RC=M(CO)₅NH(CH₂)₁₅CH₃ complexes (M=Cr, W; R=ferrocenyl or phenyl).
• Formation and characterization of Langmuir monolayers using surface pressure isotherms and Brewster angle microscopy.
• Transfer of monolayers onto substrates via Langmuir-Blodgett (LB) method to form Z-type multilayers.
• Characterization of LB films using UV-Vis spectroscopy, AFM, and XRD.

Main Results:

• All four complexes formed stable Langmuir monolayers.
• The [(Ferrocenyl)(hexadecylamine)methylidene]pentacarbonyl tungsten (0) complex (2b) yielded the most stable and homogeneous LB films.
• LB films exhibited properties suitable for integration into electronic devices.

Conclusions:

• The synthesized amphiphilic organometallic complexes self-assemble into ordered monolayers.
• Complex 2b demonstrates superior film stability and homogeneity, highlighting its potential for organic electronics.