School of Chemistry, ‡School of Physics and Astronomy, University of Nottingham , Nottingham NG7 2RD, United Kingdom.
Acc Chem Res. 2014 Dec 16;47(12):3417-27. doi: 10.1021/ar5001378. Epub 2014 Oct 20.
The arrangement of molecular species into extended structures remains the focus of much current chemical science. The organization of molecules on surfaces using intermolecular interactions has been studied to a lesser degree than solution or solid-state systems, and unanticipated observations still lie in store. Intermolecular hydrogen bonds are an attractive tool that can be used to facilitate the self-assembly of an extended structure through the careful design of target building blocks. Our studies have focused on the use of 3,4,9,10-perylene tetracarboxylic acid diimides (PTCDIs), and related functionalized analogues, to prepare extended arrays on surfaces. These molecules are ideal for such studies because they are specifically designed to interact with appropriate diaminopyridine-functionalized molecules, and related species, through complementary hydrogen bonds. Additionally, PTCDI species can be functionalized in the bay region of the molecule, facilitating modification of the self-assembled structures that can be prepared. Through a combination of PTCDI derivatives, sometimes in combination with melamine, porous two-dimensional arrays can be formed that can entrap guest molecules. The factors that govern the self-assembly processes of PTCDI derivatives are discussed, and the ability to construct suitable target arrays and host-specific molecular species, including fullerenes and transition metal clusters, is demonstrated.
将分子物种排列成扩展结构仍然是当前化学科学的重点。与溶液或固态系统相比，利用分子间相互作用在表面上组织分子的研究程度较低，仍有意外的观察结果有待发现。分子间氢键是一种很有吸引力的工具，可以通过精心设计目标构建块来促进扩展结构的自组装。我们的研究集中在使用 3,4,9,10-苝四羧酸二酰亚胺（PTCDIs）和相关功能化类似物，在表面上制备扩展阵列。这些分子非常适合此类研究，因为它们专门设计为通过互补氢键与适当的二氨基吡啶功能化分子和相关物种相互作用。此外，PTCDI 物种可以在分子的海湾区域进行功能化，从而便于修饰可以制备的自组装结构。通过组合使用 PTCDI 衍生物，有时与三聚氰胺结合，可以形成多孔二维阵列，可捕获客体分子。讨论了控制 PTCDI 衍生物自组装过程的因素，并展示了构建合适的目标阵列和主体特异性分子物种（包括富勒烯和过渡金属簇）的能力。
