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Regulation of the Chiral Twist and Supramolecular Chirality in Co-Assemblies of Amphiphilic L-Glutamic Acid with Bipyridines
Zhu, Xuefeng; Duan, Pengfei; Zhang, Li; Liu, Minghua
2011-03-01
Source PublicationCHEMISTRY-A EUROPEAN JOURNAL
ISSN0947-6539
Volume17Issue:12Pages:3429-3437
AbstractA series of amphiphilic L-glutamic acid derivatives with various saturated alkyl chains has been designed and their co-assembly with 4,4'-bipyridine in aqueous media has been investigated. While the individual amphiphiles formed hydrogels with water and self-assembled into fine fiber networks, the addition of 4,4'-bipyridine caused significant changes in the co-assembled nanostructures such that twisted chiral ribbons were formed. In these supramolecular systems, either fine structural changes or adjustment of the stoichiometric ratio of the two components had crucial effects on the formation of the chiral twists. Based on detailed investigations by SEM and XRD analyses, FTIR, CD, and UV/Vis spectroscopies, and molecular simulation, it is considered that a delicate synergistic balance between pi-pi stacking, hydrophobic, and chiral interactions is responsible for the formation of the chiral twists. An interesting sandwich structure, in which an excess of 4,4'-bipyridine is inserted into the space of primary cages constructed from the amphiphile and 4,4'-bipyridine, is proposed. Remarkably, the handedness of these chiral twists is related not only to the chiral center of the glutamic unit, but also the chain length of the alkyl tails. This work provides a deeper understanding of the formation mechanism of chiral twists, and exemplifies a feasible shortcut to the rational design of chiral structures from basic molecular structures to supramolecular systems.
KeywordAmphiphiles Chirality Hydrogels Nanostructures Supramolecular Chemistry
DOI10.1002/chem.201002595
Indexed BySCI
Language英语
WOS IDWOS:000288099200019
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:66[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72134
Collection中国科学院化学研究所
Corresponding AuthorLiu, Minghua
AffiliationChinese Acad Sci, Inst Chem, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Xuefeng,Duan, Pengfei,Zhang, Li,et al. Regulation of the Chiral Twist and Supramolecular Chirality in Co-Assemblies of Amphiphilic L-Glutamic Acid with Bipyridines[J]. CHEMISTRY-A EUROPEAN JOURNAL,2011,17(12):3429-3437.
APA Zhu, Xuefeng,Duan, Pengfei,Zhang, Li,&Liu, Minghua.(2011).Regulation of the Chiral Twist and Supramolecular Chirality in Co-Assemblies of Amphiphilic L-Glutamic Acid with Bipyridines.CHEMISTRY-A EUROPEAN JOURNAL,17(12),3429-3437.
MLA Zhu, Xuefeng,et al."Regulation of the Chiral Twist and Supramolecular Chirality in Co-Assemblies of Amphiphilic L-Glutamic Acid with Bipyridines".CHEMISTRY-A EUROPEAN JOURNAL 17.12(2011):3429-3437.
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