Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106, United States.
J Phys Chem B. 2011 Aug 18;115(32):9703-9. doi: 10.1021/jp203703e. Epub 2011 Jul 21.
We report on studies of the tailored self-assembly of the perylene diimide derivative, N,N'-ditridecylperylene-3,4,9,10-tetracarboxylic diimide, into structures with fibrous gel-type, one-dimensional, and two-dimensional morphologies. This approach for producing highly ordered nanostructures of well-defined morphologies utilizes a property of π-conjugated molecules to assemble in poor organic solvents due to π-π interaction between the aromatic cores and takes advantage of the temperature dependence of solubility. The morphology control is based on a fine-tuning of anisotropic, intermolecular solute-solute interactions that are attenuated by the solute-solvent interaction in organic solvents of different chemical structure. We discuss the role of light illumination in the self-assembly process as well as application of ultrasonic treatment as a way of mechanical tailoring of morphology. This approach paves the way toward the molecular-scale tailoring of structural properties of organic semiconducting materials for electronic and optoelectronic applications.
我们报告了对酰亚胺衍生物 N,N'- 二癸基苝-3,4,9,10- 四羧酸二酰亚胺的自组装结构进行纤维凝胶型、一维和二维形态结构的定制研究。这种生产具有明确形态的高度有序纳米结构的方法利用了π 共轭分子的特性，由于芳核之间的π-π 相互作用，它们在不良有机溶剂中自组装，并且利用了溶解度对温度的依赖性。形态控制基于精细调节各向异性的、分子间的溶质-溶质相互作用，这些相互作用在具有不同化学结构的有机溶剂中被溶质-溶剂相互作用削弱。我们讨论了光照射在自组装过程中的作用以及超声处理作为一种机械调整形态的方法。这种方法为电子和光电应用的有机半导体材料的结构性质的分子尺度定制铺平了道路。
