ICCAS OpenIR
Hierarchical Self-Assembly of Bolaamphiphiles with a Hybrid Spacer and L-Glutamic Acid Headgroup: pH- and Surface-Triggered Hydrogels, Vesicles, Nanofibers, and Nanotubes
Wang, Tianyu1; Jiang, Jian1; Liu, Yu2; Li, Zhibo2; Liu, Minghua1
2010-12-21
Source PublicationLANGMUIR
ISSN0743-7463
Volume26Issue:24Pages:18694-18700
AbstractBolaamphiphiles with L-glutamic acid headgroups and hybrid linkers, each composed of two rigid benzene rings and different polymethylene units, were designed, and morphological controls of the hierarchical self-assemblies were realized via changing solution pH and application to solid surfaces. At a low pH of 3, bolaamphiphiles formed hydrogels with water and molecules with short and long spacers formed nanofibers and helical nanoribbon-nanotubes, respectively. In a pH 12 aqueous solution, vesicles were observed from cryo-TEM measurements for amphiphiles with short spacers that could transfer to huge vesicles when cast onto a mica surface. Amphiphiles with longer spacers self-assembled into nanoparticles in a pH 12 aqueous solution while micellar fibers were formed on a mica surface. Those assemblies were characterized with UV-vis, CD, and FT-IR spectroscopy and AFM and TEM observations. With molecular structure modification and the fine tuning of conditions, morphology transitions between various nanostructures were obtained from the self-assembled bolaamphiphiles. The environmental pH can induce different interaction modes between the headgroups, and at high pH, there are strong interactions between molecular assemblies and the mica surface. It is suggested that the active headgroups, rigid necks, and flexible linkers with different lengths render molecules with diverse aggregation morphologies.
DOI10.1021/la103435t
Indexed BySCI
Language英语
WOS IDWOS:000285217700020
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70414
Collection中国科学院化学研究所
Corresponding AuthorLiu, Minghua
Affiliation1.Chinese Acad Sci, Inst Chem, CAS Key Lab Colloid Interface & Chem Thermodynam, Beijing Natl Lab Mol Sci BNLMS, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Tianyu,Jiang, Jian,Liu, Yu,et al. Hierarchical Self-Assembly of Bolaamphiphiles with a Hybrid Spacer and L-Glutamic Acid Headgroup: pH- and Surface-Triggered Hydrogels, Vesicles, Nanofibers, and Nanotubes[J]. LANGMUIR,2010,26(24):18694-18700.
APA Wang, Tianyu,Jiang, Jian,Liu, Yu,Li, Zhibo,&Liu, Minghua.(2010).Hierarchical Self-Assembly of Bolaamphiphiles with a Hybrid Spacer and L-Glutamic Acid Headgroup: pH- and Surface-Triggered Hydrogels, Vesicles, Nanofibers, and Nanotubes.LANGMUIR,26(24),18694-18700.
MLA Wang, Tianyu,et al."Hierarchical Self-Assembly of Bolaamphiphiles with a Hybrid Spacer and L-Glutamic Acid Headgroup: pH- and Surface-Triggered Hydrogels, Vesicles, Nanofibers, and Nanotubes".LANGMUIR 26.24(2010):18694-18700.
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