title: Preparation of Luminescent Polyelectrolyte/Cu-Doped ZnSe Nanoparticle Multilayer Composite Films.
abstract: ZnSe and Cu-doped ZnSe nanoparticle aqueous suspensions were prepared in the presence of mercaptopropionic acid (MPA). Cu-doped ZnSe nanoparticles exhibited a strong blue emission that was strongly dependent upon the Cu dopant level and the chemical surface passivation produced by zinc-mercaptopropionic acid complexes. These Cu-doped ZnSe nanoparticles were further assembled into ultrathin polymer-supported films using electrostatic interactions and the layer-by-layer assembly method. UV-visible spectroscopy and X-ray photoelectron spectroscopy (XPS) provided evidence for the presence and optical activity of Cu-doped ZnSe nanoparticles within the polymer ultrathin films. Moreover, XPS data supported the presence of zinc mercaptopropionic acid complexes on nanoparticle surfaces and the presence of Cu(+) ions with high luminescent activity in the doped nanoparticles. Copyright 2001 Academic Press.
authors.affiliation: Department of Chemistry, Jilin University, Changchun, 130023, People's Republic of China
authors.forename: Encai
authors.initials: E
authors.lastname: Hao
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.forename: Bai
authors.initials: B
authors.lastname: Yang
authors.forename: Hui
authors.initials: H
authors.lastname: Ren
authors.forename: Jiacong
authors.initials: J
authors.lastname: Shen