Copper phthalocyanine nanoparticles and nanoflowers

Molecular organization of copper phthalocyanine (CuPc) thin films deposited at room temperature (30 °C) on quartz and post annealed gold-coated quartz substrates have been studied. The thin films have been characterized by optical absorption, X-ray diffraction, atomic force microscopy and field emission scanning electron microscopy (FESEM). The FESEM images have shown densely packed nanoparticles and nanoflower like structure for the gold-coated quartz substrates annealed at 500 and 750 °C, respectively. The fractal dimension of the assembly of nanostructures in the films has been estimated from FESEM images. The effect of substrates on the surface morphology, optical properties and the fractal dimension have been discussed.