1. Polymer Brushes by Living Anionic Surface Initiated Polymerization on Flat Silicon (SiOx) and Gold Surfaces: Homopolymers and Block Copolymers
- Author
-
Nikos Hadjichristidis, Rigoberto C. Advincula, Shuangxi Wang, George Sakellariou, Stergios Pispas, Qingye Zhou, Jimmy W. Mays, and Mi-Kyoung Park
- Subjects
chemistry.chemical_classification ,Materials science ,technology, industry, and agriculture ,Surfaces and Interfaces ,Polymer ,Condensed Matter Physics ,Contact angle ,chemistry.chemical_compound ,Monomer ,Anionic addition polymerization ,chemistry ,Polymerization ,Polymer chemistry ,Monolayer ,Electrochemistry ,Copolymer ,General Materials Science ,Fourier transform infrared spectroscopy ,Spectroscopy - Abstract
The formation of homopolymer and block copolymer brushes grafted from Au and Si (SiOx) surfaces via living anionic surface-initiated polymerization (LASIP) is described. The initiator precursor 1,1-diphenylethylene (DPE) was functionalized with alkylsilane or alkylthiol and grafted onto planar Si wafer and Au surfaces, respectively, by self-assembled monolayer techniques. n-BuLi was used to activate the DPE initiator for anionic polymerization of monomers at the interface. A high-vacuum reactor was used for polymerization at surfaces under anhydrous solution conditions. By a careful sequence of monomer introduction, reaction, and termination, homopolymer and block copolymer tethered polymer brushes were obtained. The grafted polymer chains were investigated using surface sensitive techniques such as ellipsometry, contact angle measurements, atomic force microscopy, Fourier transform infrared spectroscopy, surface plasmon spectroscopy, and X-ray photoelectron spectroscopy. The importance of activation of t...
- Published
- 2002
- Full Text
- View/download PDF