Development and Application of Self Patterned - Self Assembled Organic Monolayers on HOPG: Studying Nanoparticle Interactions in Controllable Geometries.

这一建议的智能目标是开发由有机分子在高度定向的热解石墨上制备的自组装单分子膜的自发图案化策略，使用自图案化、自组装单分子膜来控制单组分和多组分纳米粒子系统在HOPG上的组装，并探索图案化纳米粒子系统的光学和磁性随组成和几何形状的变化。如果成功，这将导致在小纳米尺度上自发组装小纳米颗粒的方法。齐姆特教授将使用合成有机化学来设计分子，以允许在石墨(HOPG)上沉积图案化的有机单分子膜。将金属和半导体纳米颗粒连接到有机层可以进一步使图案化的单分子层功能化。这项工作包括创建可与连接基团官能化的1，5-取代菲和三茂铁分子，这反过来将结合金属或半导体纳米颗粒。通过这种方式，可以形成具有完全间隔的金属或半导体纳米颗粒单分子层的高度有序的阵列，并且完全控制颗粒间距在1-4 nm范围内。虽然已经在清洁表面上的有机链图案化方面做了很多研究，但引入的合成化学是非常有创造性的，它将使特定的表面图案控制以及对决定表面形态的属性的详细了解成为可能。有了这个奖项，有机和高分子化学项目支持布朗大学的马修·齐姆特教授的研究，他将开发新的方法，允许制造用于分子电子学和纳米技术的紧密间隔的结构，他的研究将为研究生和本科生提供学科综合培训。

The intellectual objectives of this proposal are to develop strategies for spontaneous patterning of self-assembled monolayers prepared from organic molecules on highly oriented pyrolytic graphite, to use self-patterning, self-assembled monolayers to control assembly of single component and multi-component nanoparticles systems on HOPG and to explore the optical and magnetic properties of patterned nanoparticle systems as a function of composition and geometry. If successful, this will result in methods for spontaneous assembly of small nanoparticles on the small nanometer length scale. Professor Zimmt will use synthetic organic chemistry to design molecules that will permit deposition of patterned organic monolayers on graphite (HOPG). Linking metal and semiconductor nanoparticles to the organic layers can further functionalize the patterned monolayers. This work includes creation of 1,5-substituted anthracenes and triptycenes molecules that can be functionalized with linking groups, which in turn will bind metal or semiconductor nanoparticles. In this way, highly ordered arrays with perfectly spaced metal or semiconductor nanoparticle monolayers can be formed with full control over the interparticle spacing in the 1-4 nm range. Though many studies have been done on patterning of organic chains on clean surfaces, the synthetic chemistry introduced is highly creative, and will enable both specific control of surface patterns, as well as a detailed understanding of the properties that determine surface morphology.With this award, the Organic and Macromolecular Chemistry Program supports the research of Professor Matthew Zimmt of Brown University who will develop new methods that will allow fabrication of closely spaced structures for use in molecular electronics and nanotechnology and whose research will provide discipline-integrated training for graduate students and undergraduates.