Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven-University of Leuven , Celestijnenlaan 200F, B-3001 Leuven, Belgium.
ACS Nano. 2016 Dec 27;10(12):10706-10715. doi: 10.1021/acsnano.6b05954. Epub 2016 Oct 17.
Nanocorrals with different size, shape, and orientation are created on covalently modified highly oriented pyrolytic graphite surfaces using scanning probe nanolithography, i.e., nanoshaving. Alkylated diacetylene molecules undergo laterally confined supramolecular self-assembly within these corrals. When nanoshaving is performed in situ, at the liquid-solid interface, the orientation of the supramolecular lamellae structure is directionally influenced by the gradual graphite surface exposure. Careful choice of the nanoshaving direction with respect to the substrate symmetry axes promotes alignment of the supramolecular lamellae within the corral. Self-assembly occurring inside corrals of different size and shape reveals the importance of geometric and kinetic constraints controlled by the nanoshaving process. Finally, seed-mediated crystallization studies demonstrate confinement control over nucleation and growth principles.
在共价修饰的高取向热解石墨表面上，使用扫描探针纳米光刻技术（即纳米切削）创建了具有不同大小、形状和取向的纳米围栏。烷基二乙炔分子在这些围栏内进行侧向受限的超分子自组装。当在原位、在固-液界面进行纳米切削时，超分子层状结构的取向会受到逐渐暴露的石墨表面的定向影响。仔细选择相对于基底对称轴的纳米切削方向，可以促进超分子层状结构在围栏内的排列。在不同大小和形状的围栏内进行的自组装揭示了纳米切削过程控制的几何和动力学限制的重要性。最后，种子介导的结晶研究证明了对成核和生长原理的限制控制。
