亚聚合物合体阵列的 in situ 结构反转形成有序的半孔膜
Yaobang Li1, Xiaolan Tong, Yaning He
1Department of Chemical Engineering, Laboratory for Advanced Materials, Tsinghua University, Beijing 100084, P. R. China.
Journal of the American Chemical Society
|February 16, 2006
概括
研究人员使用一种新的in situ结构反转技术创建了带有球形和圆孔的中孔聚合物薄膜. 这种方法提供了一种新的方法,可以在没有复杂的去除步骤的情况下制造先进的多孔材料.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术纳米技术
背景情况:
- 半孔材料对于催化,分离和药物输送中的应用至关重要.
- 传统的制造方法通常涉及诸如透和去除之类的多步骤过程,这可能是复杂和昂贵的.
- 为中孔结构开发更简单,更直接的制造路径是非常可取的.
研究的目的:
- 展示一种用于制造具有受控孔状几何形状 (球形和圆形) 的中孔聚合物薄膜的新方法.
- 为了研究聚合物合物阵列在现场结构的反转,作为直接通往中孔膜的途径.
- 探索光响应性聚合物的潜力,在创建可调节的半孔结构.
主要方法:
- 以环氧基聚合物为基础的聚合物制剂,含有伪基染色体和碳酸基.
- 在THF-H2O混合物中通过疏水聚合合成聚合物合体球.
- 使用垂直沉积,形成有序的二维体阵列.
- 通过溶剂 (THF) 和球孔反转,将合体阵列转化为中孔膜.
- 通过极化Ar+激光照射,将合体球阵列改造成圆形合体.
主要成果:
- 成功地从合球体阵列中获得了具有有序球形孔的中等孔聚合物薄膜.
- 在反转之前通过将球体阵列转化为圆形合体来获得有序圆孔的中等孔膜.
- 通过结构反转证明了第一次从同聚合物合体阵列中直接形成中孔结构.
- 展示了一种方法,可以绕过在中孔材料制造中透-去除步骤的需要.
结论:
- 聚合物合物阵列的 in situ 结构反转是一种可行的,直接的方法来制造半孔膜.
- 由此产生的半孔膜的孔状几何学可以通过修改前体状阵列 (球体或圆体) 的形状来控制.
- 这种方法提供了一种简化和潜在的更有效的途径,以 mesoporous 材料,打开光响应和结构调节的多孔膜的道路.
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