Bioinspired polyethylene terephthalate nanocone arrays with underwater superoleophobicity and anti-bioadhesion properties
Bioinspired polyethylene terephthalate nanocone arrays with underwater superoleophobicity and anti-bioadhesion properties
复制标题
具有水下超疏油性和抗生物粘附特性的仿生聚对苯二甲酸乙二醇酯纳米锥阵列
DOI：
10.1039/c4nr04471a
复制
发表时间：
2014-11-01
期刊：
影响因子：
6.7
通讯作者：
Yang, Bai
中科院分区：
文献类型：
--
作者：
Liu, Wendong;Liu, Xueyao;Yang, Bai
提出了一种利用胶体光刻技术制备仿生聚对苯二甲酸乙二醇酯（PET）纳米锥阵列的方法。纳米锥的纵横比（AR）可以通过调节蚀刻时间在1至6的范围内进行精细调制。AR值为6的样品具有水下超疏油性，其水下油接触角（OCA）为171.8。所制备的PET纳米锥阵列表现出抗生物粘附行为，当其用作细胞培养的基底时，其抑制了肌动蛋白细胞骨架的形成。此外，用PNIPAAm膜对PET纳米锥阵列进行改性后，其油润湿性受到温度的控制，并且功能化纳米锥阵列的油润湿性可以从OCA约为151的超疏油状态可逆地转变为OCA约为25的亲油状态。由于这种方法的高通量，并行制造和成本效益，这将有利于研究人员将疏油性能引入到各种基板和器件表面。由于PET纳米锥阵列的超疏油性和简单的功能化性质，PET纳米锥阵列是非常有前途的抗粘附、自清洁表面，并且在材料、医学和生物领域具有潜在的应用。
This paper presents a facile method to fabricate bioinspired polyethylene terephthalate (PET) nanocone arrays via colloidal lithography. The aspect ratio (AR) of the nanocones can be finely modulated ranging from 1 to 6 by regulating the etching time. The samples with the AR value of 6 can present underwater superoleophobicity with the underwater oil contact angle (OCA) of 171.8. The as-prepared PET nanocone arrays perform anti-bioadhesion behavior, which inhibits the formation of the actin cytoskeleton when it used as the substrate for cell culture. Moreover, the oil wettability is temperature controlled after modifying the PET nanocone arrays with PNIPAAm film, and the oil wettability of the functionalized nanocone arrays can be transformed from the superoleophobic state with OCA about 151 to the oleophilic state with OCA about 25 reversibly. Due to the high-throughput, parallel fabrication and cost-efficiency of this method, it will be favourable for researchers to introduce oleophobic properties to various substrate and device surfaces. Due to the superoleophobicity and simple functionalizing properties, the PET nanocone arrays are very promising surfaces for anti-adhesion, self-cleaning and have potential applications in material, medical, and biological fields.