Optical characterization of polymethylmetacrylate-poly(3-alkylthiophene) Langmuir Blodgett films.

We have synthesized a highly regioregular poly(3-alkylthiophene) containing an oxygen atom in the side chain, poly(3-pentylmethoxythiophene) (P5OMe). We have studied the formation of Langmuir-Blodgett (LB) multilayer structures prepared by mixing P5OMe with highly isotactic polymethylmethacrylate (PMMA), and we have characterized the structure obtained by means of UV-Visible absorption, photoluminescence measurements and AFM. A certain degree of orientation of the macromolecules in the dipping direction was observed.