Gemini supra-amphiphiles with finely-controlled self-assemblies. Issue 20 (24th April 2015)

• Record Type: Journal Article
• Authors: Shi, Lijuan; Chen, Fuyu; Sun, Nan; Zheng, Liqiang
• Is Part Of: Soft matter. Volume 11:Issue 20(2015)
• Page Start: 4075
• Page End: 4080
• Publication Date: 2015-04-24
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c5sm00658a
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : A slight variation of building blocks can effectively modulate the driving forces for the fabrication of gemini supra-amphiphiles, thus leading to the fine control of subsequent self-assemblies. Abstract : Novel gemini supra-amphiphiles, [Mim-4-Mim][DBS]2 and [Mim-4-Mim][DS]2, were facilely constructed. A slight variation of building blocks can effectively modulate the driving forces for the fabrication of gemini supra-amphiphiles, thus leading to the fine control of subsequent self-assemblies. [Mim-4-Mim][DS]2, constructed via electrostatic attraction, tends to form micelles and hexagonal liquid crystals. Rich lamellar structures, including unilamellar and multilamellar vesicles, planar bilayers, and lamellar liquid crystals can be formed by [Mim-4-Mim][DBS]2, which is constructed through electrostatic and π–π stacking interactions. With increasing temperatures, [Mim-4-Mim][DBS]2 exhibits interesting phase separation in the La phase, behaving like common nonionic surfactants. The cross-linking between vesicles, where the "bola-type" [Mim-4-Mim] 2+ cations act as the bridges, was found to promote the elongation of aggregates until the occurrence of phase separation.