Department of Micro and Nanotechnology, Technical University of Denmark, Produktionstorvet 423, 2800 Kgs. Lyngby, Denmark.
Macromol Rapid Commun. 2011 Aug 17;32(16):1259-63. doi: 10.1002/marc.201100243. Epub 2011 Jun 20.
We present an efficient method for functionalizing the large polymer-air interface of a gyroid nanoporous polymer. The hydrophilicity of nanoporous cross-linked 1,2-polybutadiene is tuned by thiol-ene photo-grafting of mercaptosuccinic acid or sodium 2-mercaptoethanesulfonate. The reaction is monitored by FT-IR, UV-Vis, contact angle, and gravimetry. Overall quantum yields are calculated for the two thiol-ene "click" reactions in nano-confinement, neatly revealing their chain-like nature. Top-down photolithographic patterning is demonstrated, realizing hydrophilic nanoporous "corridors" exclusively hosting water. The presented approach can be relevant for many applications where, e.g., high control and contrast in hydrophilicity, chemical functionality or refractive index are needed.
我们提出了一种在介观高分子网络的大聚合物-空气界面上进行功能化的有效方法。通过巯基-烯点击反应，将巯基琥珀酸或 2-巯基乙磺酸钠接枝到具有纳米多孔结构的交联 1,2-聚丁二烯上，从而调节纳米多孔交联 1,2-聚丁二烯的亲水性。利用傅里叶变换红外光谱（FT-IR）、紫外可见光谱（UV-Vis）、接触角和重量分析对反应进行了监测。在纳米受限条件下，我们计算了两种巯基-烯“点击”反应的总量子产率，这很好地揭示了它们的链状性质。我们还展示了自上而下的光刻图案化，实现了仅容纳水的亲水性纳米多孔“通道”。这种方法可以应用于许多领域，例如在需要高度控制和对比亲水性、化学功能或折射率的情况下。
