Development of Environmentally Responsive Antibacterial Materials Imparted by Fluorine

以过氧化氟代烷酰为关键中间体，合成了含铵和二甲基（辛基）铵等阳离子链段的新型氟烷基封端齐聚物。这些含阳离子链段的氟化低聚物不仅易溶于水，而且易溶于普通有机溶剂，并且能够相当有效地降低水的表面张力，具有类似于临界胶束浓度的明显断点，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的改性聚（甲基丙烯酸甲酯）或纤维素表面显示出具有强亲水性和高抗菌活性。因此，这些氟烷基封端的低聚物可应用于不仅具有表面抗菌活性而且具有由氟赋予的表面活性性质的新功能材料。

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.