Optical, morphological and structural characterization of Langmuir–Schaefer films of a functionalized copper phthalocyanine

Langmuir–Schaefer (LS) films of copper(II) tetrakis-(isoprpoxy-carbonyl)-phthalocyanine (TiPCuPc) have been deposited onto various solid supports. Its floating film have been characterized at the air–water interface by means of Brewster Angle Microscopy and Langmuir curves. Vibrational modes of multilayer transferred LS film have been studied by Raman spectroscopy and the optical parameters (refractive index n and extinction coefficient k) have been determined in the visible range of the electromagnetic spectrum. Linearly polarized light absorbance measurements have been performed at room temperature in the 400–800 nm spectral range and the average orientation of the phthalocyanine rings have been estimated. Transmission electron microscopy has been also used to characterize the morphological properties of the LS film and a close packed arrangement of the deposited molecules has been observed.

Derivatized copper phthalocyanine floating film formation on water subphase and transfer onto solid substrate by means of Langmuir-Schaefer technique.Figure optionsDownload high-quality image (51 K)Download as PowerPoint slideHighlights
► Floating films of a Cu derivative phthalocyanine were deposited on solid supports.
► Solid films were deposited by means Langmuir–Schaefer method.
► The thin films were characterized by Raman and visible spectroscopy.
► TEM measurements suggested a close packed arrangement of the deposited molecules.
► Consistent data have been obtained by different characterization techniques.