Zhong X, Hu C, Yan X, Zhu D, Chen Q, Li W, Feng L, Wei Y. Self-assembly of supra-amphiphiles building block fabricated by β-cyclodextrin and adamantane-based ionic liquid.
RSC Adv 2019;
9:17281-17290. [PMID:
35519893 PMCID:
PMC9064563 DOI:
10.1039/c9ra02738f]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 05/24/2019] [Indexed: 12/01/2022] Open
Abstract
A new adamantane-based ionic liquid, (11-(((-adamantane-1-carbonyl)oxy)undecyl)-1-methylimidazol-3-ium bromide (AD-C11im), was synthesized from 1-adamantanecarboxylic acid and observed that it can aggregate into micelles in aqueous solution. A number of experiments were conducted to understand the self-assembly of supra-amphiphiles building block fabricated by β-cyclodextrin (β-CD) and adamantane-based ionic liquid at diverse molar ratios. Studies revealed that host–guest interaction between the adamantane group and β-CD occurred and AD-C11im@1β-CD building block formed when same amount β-CD was added. Then the micelles aggregates formed by AD-C11im only turned into spherical vesicles, which was confirmed by AFM, DLS and TEM. Besides, according to the results of AFM, it can be confirmed that the vesicles were monolayer structure. When double amount β-CD was added, both the adamantane group and the hydrophobic chain were encapsulated by β-CD and AD-C11im@2β-CD building block formed. Thus the aggregations changed from vesicles to net-like nanofiber, which was observed by TEM. When the β-CD concentration increased to 40 mM, the formation of light blue hydrogel was observed during the self-assembling process of AD-C11im@2β-CD building block.
The self-assembly of supra-amphiphiles building block fabricated by β-CD and AD-C11im at diverse molar ratios was studied. The micelles of AD-C11im turned into monolayer vesicles, net-like nanofibers and hydrogel at different β-CD/AD-C11im system.![]()
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