An amphiphilic helicene derivative, 9-hydroxy-oxa[9]helicene (HO9H), was used for the fabrication of Langmuir-Blodgett (LB) films at the air-water interface. The deposited film was characterized by different experimental techniques, and its photochemical properties were investigated. It was demonstrated that the compound HO9H forms multilayers film or aggregates at the air-water interface due to insufficient hydrophilicity. This result was confirmed by Brewster angle microscopic (BAM), atomic force microscopic (AFM), and X-ray reflectivity (XR) analysis. The experimental findings confirm the perpendicular orientation of helicene molecules with respect to the plane of substrate in the film. Furthermore, it was found that upon light irradiation, HO9H generated a considerable amount of photocurrent, highlighting its potential as an organic photoelectronic material

doi.org/10.32737/0005-2531-2025-4-70-77