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

该提案的智力目标是开发用于在高度定向热解石墨上由有机分子制备的自组装单层的自发图案化的策略，使用自图案化的自组装单层来控制单组分和多组分纳米颗粒系统在HOPG上的组装，并探索图案化的纳米颗粒系统作为组成和几何形状的函数的光学和磁性。如果成功，这将导致在小纳米长度尺度上自发组装小纳米颗粒的方法。Zimmt教授将使用合成有机化学来设计分子，使其能够在石墨（HOPG）上沉积图案化的有机单层。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层功能化。这项工作包括创造1，5-取代的蒽和三蝶烯分子，这些分子可以用连接基团官能化，从而结合金属或半导体纳米颗粒。以这种方式，可以形成具有完美间隔的金属或半导体纳米颗粒单层的高度有序的阵列，其中完全控制1-4 nm范围内的颗粒间间距。虽然许多研究都是关于清洁表面上有机链的图案化，但引入的合成化学具有高度的创造性，可以实现对表面图案的特定控制，以及对决定表面形态的特性的详细了解。有机和高分子化学计划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，它允许制造用于分子电子学和纳米技术的密集结构，其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.