文献类型：期刊文献

英文题名：Odd-even effect during layer-by-layer assembly of polyelectrolytes inspired by marine mussel

作者：Wang, Weina[1,2];Xu, Yisheng[1];Han, Haoya[1,2];Micciulla, Samantha[2];Backes, Sebastian[2];Li, Ang[1];Xu, Jun[1];Shen, Weihua[1];von Klitzing, Regine[2];Guo, Xuhong[1,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Tech Univ Berlin, Stranski Lab Phys & Theoret Chem, D-10623 Berlin, Germany;[3]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bintuan, Xinjiang 832000, Peoples R China

年份：2017

卷号：55

期号：3

起止页码：245

外文期刊名：JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS

收录：;EI(收录号：20164803059956);WOS:【SCI-EXPANDED(收录号:WOS:000393756700003)】；

基金：Yisheng Xu and Xuhong Guo acknowledge the financial support from the National Natural Science Foundation of China (No. 51273063, 21476143, 21676089, and 21306049), 111 Project Grant (B08021), the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-14C01), Innovation Program of Shanghai Municipal Education Commission (15ZZ030), and Firmenich. This work is also sponsored by Shanghai Pujiang Program (No. 14PJ1402400). Weina Wang acknowledges the China Scholarship Council and Technische Universitat Berlin for Financial support. Samantha Micciulla and Sebastian Backes acknowledge Technische Universitat Berlin for Financial support.

语种：英文

外文关键词：adsorption kinetics; atomic force microscopy (AFM); biomimetic; crosslinking degree; films; layer growth; odd-even effect; QCM-D

摘要：Biomimetic polyelectrolyte of Dopa modified poly(acrylic acid) (PAADopa) was synthesized taking advantage of Dopa, the major unit of marine adhesive proteins. Zinc crosslinked PAADopa (PAADopa-Zn) were formed at acidic pH for more compact structure and assembled with the positively charged polyethylenimine (PEI) to build robust polyelectrolyte multilayers at high salt concentration. Effects of pH, crosslinking degree, and salt concentration on polymer structure, film building process, and morphology were investigated, respectively. An odd-even effect was observed by quartz crystal microbalance with dissipation and AFM in the presence of zinc ion, which becomes more obvious with an optimum crosslinking degree (Zn/Dopa=2.0) under high salt concentration (0.6 M NaCl). It indicates the different swollen properties of PEI chain and PAADopa-Zn complexes during the layer-by-layer building process under optimum crosslinking degree of PAADopa-Zn at high salt concentration. Such odd-even phenomenon of the biocompatible system is of critical importance for understanding the mechanism of layer formation and film structures. (c) 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 245-255