Co-assembly behaviors and rheological properties of a salt-free catanionic tetrapeptide/surfactant system in water

被引：3
|
作者：
Wang, Dong [1 ]
Cao, Yueying [1 ]
Sun, Yawei [1 ]
Wang, Jiqian [1 ]
机构：
[1] China Univ Petr East China, State Key Lab Heavy Oil Proc, Ctr Bioengn & Biotechnol, Qingdao 266580, Peoples R China
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2017年 / 243卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
BETA-SHEET ASSEMBLAGE; PEPTIDE AMPHIPHILES; STRUCTURAL TRANSITION; SURFACTANT SOLUTIONS; NANOSTRUCTURES; ANTIBACTERIAL; NANOMATERIALS; DERIVATIVES; DIPEPTIDES; NANOFIBERS;
D O I：
10.1016/j.molliq.2017.08.060
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The co-assembly behavior of a short tetrapeptide (I3E) and a zwitterionic surfactant (dodecyldimethylamine oxide, C(14)DMAO) in water have been systematically investigated. The microstructures and properties of the I3E/C(14)DMAO mixture were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM) and a HAAKE rotational rheometer. Fourier transform infrared (FTIR), X-ray diffraction (XRD) and circular dichroism (CD) were used to explore the formation of different microstructures. It was found that, with the increasing of C(14)DMAO, the co-assembly of the I3E/C(14)DMAO mixture changed from nanofibers to nanosheets, and then finally to wormlike micelles and spherical micelles. And the rheological properties of the mixtures also changed with the increasing of C(14)DMAO concentration accordingly. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：406 / 413
页数：8
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