title: N-hydroxymethyl acrylamide polymer brush and its application in catalyzing coupling reaction.
abstract: Poly (N-hydroxy methyl acrylamide)-grafted silicon, glass, and quartz surfaces were successfully prepared by surface-initiated atom transfer radical polymerization (SI-ATRP) with methyl alcohol/water mixtures as solvents and CuCl/2,2-dipyridyl as a catalyst. The modified surfaces were characterized by water contact angle, atomic force microscope (AFM), Fluorescence spectrophotometer, Low-angle X-ray diffraction (LAXRD), and X-ray Photoelectron Spectroscopy (XPS). The results showed that the homogeneous and well hydrophilic N-hydroxymethyl acrylamide polymer brushes (NHAM-brushes), which had high hydrophilic properties and the added advantage of providing 3-D coatings with higher binding capacities, were obtained successfully. Cyclopalladated arylimine functionalized polymer brushes were also obtained by reacting HAM-brushes with N,N'-Carbonyldiimidazole (CDI) and cyclopalladated arylimine. The catalyst functionalized PHAM-brushes had good catalytic activity in heterogeneous compared to homogeneous catalyst and exhibited much improved stability and recyclability over time in Suzuki cross-coupling reaction.
authors: The College of Chemistry and Molecular Engineering, The Key Lab of Chemical Biology and Organic Chemistry of Henan Province, Zhengzhou 450001, PR China.
authors: Zhihua
authors: Z
authors: Fu
authors: Na
authors: N
authors: Zhang
authors: Jie
authors: J
authors: Liu
authors: Tiesheng
authors: T
authors: Li
authors: Wenjian
authors: W
authors: Xu
authors: Fei
authors: F
authors: Wang
authors: Tao
authors: T
authors: Wang
authors: Zhen
authors: Z
authors: Zhai
authors: Linlin
authors: L
authors: Liu
authors: Luyan
authors: L
authors: Mao
authors: Yangjie
authors: Y
authors: Wu