title: Metal ion induced-assembly of amylose in aqueous solution.
abstract: Cu(2+)/amylose assemblies of various sizes were prepared through the Cu(2+) ion induced-assembly of amylose. These assembly structures were characterized via transmission electronic microscopy (TEM), scanning electronic microscopy (SEM), dynamic light scattering (DLS), (1)H NMR analysis, fluorescence spectroscopy (FL) and UV-vis absorption spectroscopy (UV-vis). The results from these characterizations revealed the existence of a complexation effect and/or a bridging effect between the hydroxyl groups of amylose and Cu(2+) ions, and that the formation of the hydrophobic domains promoted the formation of Cu(2+)/amylose assemblies. The use of other metal ions to induce the formation of spherical, flower- and wire-like amylose assemblies was investigated as well. A preliminary investigation on the ability of amylose to capture various metal ions was also performed, and the results of this work demonstrated that amylose could bind quantitatively metal ions that were at low concentrations. This work provided an alternative strategy for the recovery of precious metals from metal ion-containing aqueous solutions and the reduction of water pollution.
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences, 510650, People's Republic of China; Engineering Research Center of Seawater Utilization Technology, Ministry of Education, School of Marine Science and Engineering, Hebei University of Technology, Tianjin, People's Republic of China.
authors: Yinhui
authors: Y
authors: Li
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences, 510650, People's Republic of China.
authors: Shudong
authors: S
authors: Lin
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences, 510650, People's Republic of China. Electronic address: hjw@gic.ac.cn.
authors: Jiwen
authors: J
authors: Hu
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, Canada K7L 3N6.
authors: Guojun
authors: G
authors: Liu
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences, 510650, People's Republic of China.
authors: Gangwei
authors: G
authors: Zhang
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences, 510650, People's Republic of China.
authors: Yuanyuan
authors: Y
authors: Tu
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences, 510650, People's Republic of China.
authors: Hongsheng
authors: H
authors: Luo
authors: Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, People's Republic of China; Key Laboratory of Cellulose Lignocellulosics Chemistry, Chinese Academy of Sciences, 510650, People's Republic of China.
authors: Wei
authors: W
authors: Li
keywords: Amylose; Induced-assembly; Metal ion; Starch