Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072, China.
Langmuir. 2013 Dec 31;29(52):16051-7. doi: 10.1021/la4036908. Epub 2013 Dec 18.
Fabrication of organic thin films with highly dispersed inorganic nanoparticles is a very challenging topic. In this work, a new approach that combines electron-induced molecular self-assembly with simultaneous nanoparticle formation by room temperature electron reduction was developed to prepare peptide thin films with highly dispersed noble metal nanoparticles. Argon glow discharge was employed as the resource of electrons. The peptide motif KLVFF (Aβ16-20) self-assembled into two-dimensional membranes under the influence of hydrated electrons, while the metal ions in solution can be simultaneously reduced by electrons to form nanoparticles. Our TEM imaging reveals that metal nanoparticles were well-distributed in the resulting peptide thin films. Our results also suggest that the size of metal nanoparticles can be tuned by varying the initial concentration of the metal ion. This simple approach can be viewed as a promising strategy to create hybrid thin films that integrate functional inorganics into biomolecule scaffolds.
用高度分散的无机纳米粒子制备有机薄膜是一个极具挑战性的课题。在这项工作中，我们开发了一种新方法，将电子诱导的分子自组装与通过室温电子还原同时形成纳米粒子相结合，用于制备具有高度分散的贵金属纳米粒子的肽薄膜。氩辉光放电被用作电子源。在水合电子的影响下，肽基序 KLVFF（Aβ16-20）自组装成二维膜，而溶液中的金属离子可以同时被电子还原形成纳米粒子。我们的 TEM 成像表明，金属纳米粒子在所得的肽薄膜中均匀分布。我们的结果还表明，通过改变金属离子的初始浓度可以调节金属纳米粒子的尺寸。这种简单的方法可以被视为一种有前途的策略，用于创建将功能无机材料集成到生物分子支架中的混合薄膜。
