Nguyen Thuc-Quyen, Martel Richard, Avouris Phaedon, Bushey Mark L, Brus Louis, Nuckolls Colin
Department of Chemistry, Columbia University, New York, New York 10027 USA.
J Am Chem Soc. 2004 Apr 28;126(16):5234-42. doi: 10.1021/ja031600b.
Intermolecular interactions involving pi-pi interaction and hydrogen bonding are used to create one-dimensional molecular nanostructures of hexasubstituted aromatics. Site-selective steady state fluorescence, time-resolved fluorescence, scanning electron microscopy, and atomic force microscopy measurements detail the intermolecular interactions that drive the aromatic molecules to self-assemble in solution to form well-ordered columnar stacks. These nanostructures, formed in solution, vary in their number, size, and structure depending on the solvent used. In addition, our results indicate that the substituents/ side groups and the proper choice of the solvent can be used to tune the intermolecular interactions. The 1D stacks and their aggregates can be easily transferred by solution casting, thus allowing a simple preparation of molecular nanostructures on different surfaces.
涉及π-π相互作用和氢键的分子间相互作用被用于构建六取代芳烃的一维分子纳米结构。位点选择性稳态荧光、时间分辨荧光、扫描电子显微镜和原子力显微镜测量详细揭示了驱动芳香族分子在溶液中自组装形成有序柱状堆积的分子间相互作用。这些在溶液中形成的纳米结构，其数量、尺寸和结构会因所用溶剂的不同而有所变化。此外，我们的结果表明，取代基/侧基以及溶剂的恰当选择可用于调节分子间相互作用。一维堆积及其聚集体可通过溶液浇铸轻松转移，从而能够在不同表面上简单地制备分子纳米结构。
