Copper phthalocyanine nanocrystals embedded into polymer host: Preparation and structural characterization

Copper phthalocyanine Cu-Pc nanocrystals (NCs) dispersed in thin films of polystyrene (PS) matrix were fabricated by spin coating method at room temperature under normal atmospheric pressure on glass substrate. The films have been characterized by several characterization techniques. X-ray diffraction diagrams confirmed the incorporation of Cu-Pc nanocrystals in polystyrene matrix and determined the structure of the CuPc-NCs. Raman and FT-IR spectra of PS/Cu-Pc nanocomposite were also recorded. The observed Raman and FT-IR bands were assigned to phonon modes on the basis of their symmetry. The optical absorption spectra of PS/Cu-Pc nanocomposite films showed three absorption bands, one band positioned at 718 nm, another one located at 611 nm with a shoulder at 645 nm known as the Q-band, and the B-band was located at 336 nm. Discussion of the obtained results and their comparison with the previous data were also given.