改性脂类分子自组装微管模板的制备及金属化

Preparation of Modified Lipid Molecular Self-assembly Microtubule Template and Its Metallization

利用联乙炔基甘油磷脂酰乙二醇分子自组装制备了脂类微管,并以该脂类微管为模板,在其表面化学沉积制备了镀镍金属微管。SEM和TEM观察表明,自组装微管的生成率很高,脂类微管呈弯曲螺旋结构,具有很高的长径比,平均长度为380μm,平均直径为110 nm;金属微管表面相对致密,平均长度为120μm,平均直径为210 nm。XRD分析结果表明,镍镀层为非晶态结构。金属微管可用作载体包埋海洋防污剂或药物,控制它们的释放,可望用于新型功能材料的开发。

Lipid microtubules are prepared with self-assembly method from diacetylenic glycerol phosphatidylhydroxyethanol, a modified lipid molecule. Metallic micromhules are obtained on the template of these lipid tubules by electroless plating of Ni. SEM and TEM examination shows that there is a high yield of microtuhules in the self-assembly from the lipid molecules,and they present a wrapped helical structure with a high aspect ratio. Their average length is 380 μm, and the average diameter is 110 nm. The metallized microtuhules have a fine plating surface with an average length of 120 μm and an average diameter of 210 nm. XRD analysis indicates that the coated Ni on the microtuhule template is in a non-crystalline state. Metallized micro- tubules can be used as a vehicle to encapsulate marine antifouling agents or drugs in its lumen to control their release. Hence, metallized microtubules can be pontential to be developed for novel micro-and nano-meter functional materials.