Development of Environmentally Responsive Antibacterial Materials Imparted by Fluorine

以过氧氟烷酰为关键中间体，制备了含铵单元和二甲基（辛基）铵单元等阳离子段的新型氟烷基端盖低聚物。这些含阳离子片段的氟化低聚物不仅易于溶于水，而且易于溶于普通有机溶剂，并且能够非常有效地降低水的表面张力，具有类似于临界胶束浓度的明确断点，与低分子量氟化表面活性剂相同。更有趣的是，用这些氟化阳离子低聚物处理过的改性聚甲基丙烯酸甲酯或纤维素表面显示出很强的亲水性和较高的抗菌活性。因此，这些端盖氟烷基低聚物不仅具有表面抗菌活性，而且具有氟赋予的表面活性，适用于新型功能材料。

New fluoroalkyl end-capped oligomers containing cationic segments such as ammonium andDimethyl (octyl)ammonium units were prepared by the use of fluoroalkanoyl peroxide as a key intermediate. These fluorinated oligomers containing cationic segments are easily soluble not only in water but also in common organic solvents, and were able to reduce the surface tension of water quite effectively with a clear breakpoint resembling a critical micelle concentration, the same as for low-molecular weight fluorinated surfactants. More interestingly, the modified poly (methyl methacrylate) or cellulose surface treated with these fluorinated cationic oligomers was shown to have a strong hydrophilicity with a high antibacterial activity. Therefore, these fluoroalkyl end-capped oligomers are applicable to new functional materials possessing not only the surface antibacterial activity but also the surface active property imparted by fluorine.