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Trimeric Supra‐Amphiphile with Diverse Lamellar Self‐Assemblies
Author(s) -
Li Jun,
Li Hui,
Wang Jie,
Jiang Hongshi,
Yao Chenzhong,
Wang Gaofeng,
Ma Huixuan,
Shi Lijuan
Publication year - 2019
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1002/jsde.12210
Subject(s) - amphiphile , vesicle , chemistry , lamellar structure , micelle , lamellar phase , stacking , phase (matter) , self assembly , crystallography , sodium , chemical engineering , membrane , copolymer , organic chemistry , aqueous solution , polymer , biochemistry , engineering
A new kind of trimeric supra‐amphiphile [M‐4‐M‐4‐M][DBS] 3 that exhibits diverse self‐assembly behaviours was fabricated through ion exchange between linear tricationic imidazolium chloride ([M‐4‐M‐4‐M]Cl 3 ) and sodium dodecyl benzene sulfonate (SDBS). Micelles are spontaneously transformed into unilamellar vesicles at a quite low concentration (1.5 mM), and then evolved to multilamellar vesicles and planar bilayers successively with a further increase in the concentration of [M‐4‐M‐4‐M][DBS] 3 in the absence of any additives. The presence of π‐π stacking interactions has been proved to promote the lamellar arrangement of the supra‐amphiphile. With increasing temperatures, [M‐4‐M‐4‐M][DBS] 3 exhibits interesting “clouding” and phase separation in the L a phase, behaving like common nonionic surfactants. Chain‐like aggregates are formed in the bottom phase, which are probably induced by the hierarchical assembly of vesicles. This work provides useful insights into the role of weak interactions in the fabrication and self‐assembly of oligomeric supra‐amphiphiles, and paves a way to enrich the structures and functions of self‐assemblies.