title: Dynamics of the layer-by-layer assembly of a poly(acrylic acid)-lanthanide complex colloid and poly(diallyldimethyl ammonium).
abstract: Poly(acrylic acid) (PAA) and lanthanide (Ln) ions, such as Ce(3+), Eu(3+), and Tb(3+), were prepared as dispersed complex colloidal particles through three different protocols with rigorous control of the pH value and mixing ratio. The negatively charged PAA-Ln complex particles were layer-by-layer (LbL) assembled with positively charged poly(diallyldimethyl ammonium) (PDDA) to prepare a thin film. The film thickness growth is much quicker than PDDA/PAA film. Due to the incorporation of Ln(3+) ions, the film exhibits fluorescence. During LbL assembly, PDDA-PAA association based on electrostatic force and PAA-Ce association based on coordination are in competition, which leads to the LbL assembly of PDDA and PAA-Ln complex colloidal particles being a complicated dynamic process.
authors.affiliation: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China. shgyang@dhu.edu.cn.
authors.forename: Jiali
authors.initials: J
authors.lastname: Xu
authors.forename: Zhiliang
authors.initials: Z
authors.lastname: Wang
authors.forename: Lingang
authors.initials: L
authors.lastname: Wen
authors.forename: Xianju
authors.initials: X
authors.lastname: Zhou
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
authors.forename: Shuguang
authors.initials: S
authors.lastname: Yang