Zirconium phosphonate/1,4,5,8-naphthalenediimides self-assembled films
The formation and characterization of self-assembled films of zirconium phosphonate/N,N'-di(2-phosphonoethyl)-1,4,5,8-naphthalenediimide (DPN) is presented. The films were produced on glass substrates by deposition of alternating layers of Zr+4 and DPN. Films containing up to 16 layers on each side of the substrate were obtained and monitored by absorption spectroscopy and ellipsometry. When irradiated, the initially colorless films turned to a persistent pinky color reminiscent of that of DPN anion radical. These films are a promising material to the development of photovoltaic devices.
Departamento de Quimica Fundamental, Universidade de Sao Paulo, Brazil.
MA
Rodrigues
DF
Petri
MJ
Politi
S
Brochsztain