Self-Assembly of Copper(II) Ion-Mediated Nanotube and Its Supramolecular Chiral Catalytic Behavior

doi:10.1021/la203110z

CORC > 化学研究所 > 中国科学院化学研究所

	Self-Assembly of Copper(II) Ion-Mediated Nanotube and Its Supramolecular Chiral Catalytic Behavior
	Jin, Qingxian 1; Zhang, Li 1; Cao, Hai 1; Wang, Tianyu 1; Zhu, Xuefeng 1; Jiang, Jian 2; Liu, Minghua 1
刊名	LANGMUIR
	2011-11-15
卷号	27 期号:22 页码:13847-13853
ISSN号	0743-7463
DOI	10.1021/la203110z
英文摘要	Self-assembly of several low-molecular-weight L-glutamic acid-based gelators, which individually formed helical nanotube or nanofiber structures, was investigated in the presence of Cu(2+) ion. It was found that, when Cu(2+) was added into the system, the self-assembly manner changed significantly. Only in the case of bolaamphiphilic glutamic acid, N,N'-hexadecanedioyl-di-L-glutamic acid (L-HDGA), were the hydrogel formation as well as the nanotube structures maintained. The addition of Cu(2+) ion caused a transition from monolayer nanotube of L-HDGA to a multilayer nanotube with the thickness of the tubular wall about 10 rim. For the other amphiphiles, the gel was destroyed and nanofiber structures were mainly formed. The formed Cu(2+)-containing nanostructures can function as an asymmetric catalyst for Diels-Alder cycloaddition between cyclopentadiene and aza-chalcone. In comparison with the other Cu(2+)-containing nanostructures, the Cu(2+)-mediated nanotube structure showed not only accelerated reaction rate, but enhanced enantiomeric selectivity. It was suggested that, through the Cu(2+) mediated nanotube formation, the substrate molecules could be anchored on the nanotube surfaces and produced a stereochemically favored alignment. When adducts reacted with the substrate, both the enantiomeric selectivity and the reaction rate were increased. Since the Cu(2+)-mediated nanotube can be fabricated easily and in large amount, the work opened a new way to perform efficient chiral catalysis through the supramolecular gel.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000296598300055
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/73099]
专题	中国科学院化学研究所
通讯作者	Liu, Minghua
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Inst Chem, Beijing 100190, Peoples R China 2.Natl Ctr Nanosci & Technol NCNST, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Jin, Qingxian,Zhang, Li,Cao, Hai,et al. Self-Assembly of Copper(II) Ion-Mediated Nanotube and Its Supramolecular Chiral Catalytic Behavior[J]. LANGMUIR,2011,27(22):13847-13853.
APA	Jin, Qingxian.,Zhang, Li.,Cao, Hai.,Wang, Tianyu.,Zhu, Xuefeng.,...&Liu, Minghua.(2011).Self-Assembly of Copper(II) Ion-Mediated Nanotube and Its Supramolecular Chiral Catalytic Behavior.LANGMUIR,27(22),13847-13853.
MLA	Jin, Qingxian,et al."Self-Assembly of Copper(II) Ion-Mediated Nanotube and Its Supramolecular Chiral Catalytic Behavior".LANGMUIR 27.22(2011):13847-13853.