Preparation and characterization of Langmuir–Blodgett films of endohedral metallofullerene Gd@C82

Monolayer Langmuir–Blodgett (LB) films of metallofullerene Gd@C82 mixed with stearic acid (Gd@C82/SA) were deposited onto mica substrates from the air/water interface. The structural characteristics of these films were studied by atomic force microscopy (AFM) and contact angle (CA). The results showed that the metallofullerene Langmuir–Blodgett (LB) films with SA (Gd@C82/SA) were easily fabricated by vertical dipping method compared to the pure metallofullerene film. When the molar ratio of SA:Gd@C82 was up to 4:1, the corresponding LB films exhibited a uniform and ordered layer structure.