The P3HT and P3OT polymers were scattered on a water-air surface of a Langmuir trough. • Through isotherms (π-A) one can identify the organization phases of the molecules. • The thin films presented linear growth through of Langmuir Schaefer technique. • The thin films on the interdigitated electrode quickly detected the organic vapor. • Raman mapping detected the physical interactions between organic polymers and vapors.
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