Electronic and Optical Properties of 3,3´,3´´,3´´´- and 4,4´,4´´,4´´´-Tetraaminophthalocyantocopper(II) Grafted with Different Polymers

Abstract

Phthalocyanines and other related compounds are an important class of macrocyclic with many commercial applications. Therefore, their electronic and optical properties of  3,3',3'',3'''-tetraaminophthalocyaninatocopper(II), and 4,4',4'',4'''-tetraaminophthalocyaninatocopper(II) compounds and their grafted polymers based on poly(ethylene glycol) with adipic acid or sebacic acid were studied. Their absorption spectra resulted from UV-Visible measurements showed the characteristic phthalocyanine peaks (Q and B bands). In general, the two bands exhibit blue shifts of both bands for polymers grafted-compounds in comparison with 3,3',3'',3'''- (NH₂)₄PcCu(II) and 4,4',4'',4'''-(NH₂)₄PcCu(II) alone. The energy gaps of tetraaminophthalocyaninatocopper(II)  compounds and with grafted polymers were calculated from optical measurements and showed an increasing in the energy gap due to grafted polymers in comparison with the ungrafted tetraaminophthalocyaninatocopper(II) and they were affected by their particle size.

Keywords: electronic properties, optical properties, tetraaminophthalocyanine, grafting polymer, energy gap.