胶束
原子转移自由基聚合
分散性
动态光散射
两亲性
单体
聚合
化学
高分子化学
水溶液
共聚物
乙二醇
聚合物
材料科学
有机化学
纳米颗粒
纳米技术
作者
Yi Wang,Alina M. Alb,Jibao He,Scott M. Grayson
出处
期刊:Polymer Chemistry
[The Royal Society of Chemistry]
日期:2014-01-01
卷期号:5 (2): 622-629
被引量:23
摘要
A novel neutral amphiphilic monomer bearing tri(ethylene glycol) monomethyl ether as the hydrophilic part and a decyl group as the hydrophobic part was successfully synthesized and its structure was confirmed by NMR. The monomer was readily polymerized via atom transfer radical polymerization (ATRP) resulting in control over the molecular weight and a narrow dispersity. As a result of the contrasting solubilities of the two side chains, the amphiphilic homopolymers readily self-assembled in a variety of solvents, forming micelles in polar environments and reverse micelles in non-polar environments. The critical micelle concentrations (CMCs) were determined by fluorescence spectroscopy as 0.12 mg mL−1 in hexanes solution and 0.002 mg mL−1 in aqueous solution. The average diameter of the self-assembled aggregates in aqueous solution was calculated by dynamic light scattering (DLS) to be ∼180 nm and this aggregate size was confirmed by transmission electron microscopy (TEM).
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