ICCAS OpenIR
Self-Assembly of Copper(II) Ion-Mediated Nanotube and Its Supramolecular Chiral Catalytic Behavior
Jin, Qingxian1; Zhang, Li1; Cao, Hai1; Wang, Tianyu1; Zhu, Xuefeng1; Jiang, Jian2; Liu, Minghua1
2011-11-15
Source PublicationLANGMUIR
ISSN0743-7463
Volume27Issue:22Pages:13847-13853
AbstractSelf-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.
DOI10.1021/la203110z
Indexed BySCI
Language英语
WOS IDWOS:000296598300055
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:87[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73100
Collection中国科学院化学研究所
Corresponding AuthorLiu, Minghua
Affiliation1.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
Recommended Citation
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.
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