Control of Fullerene Crystallization from 2D to 3D through Combined Solvent and Template Effects,Journal of the American Chemical Society

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Control of Fullerene Crystallization from 2D to 3D through Combined Solvent and Template Effects
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-11-07 00:00:00 , DOI: 10.1021/jacs.7b08642
Daling Cui ₁ , Maryam Ebrahimi ₁ , Federico Rosei _{1,

2} , Jennifer M. Macleod _{1,

3}

Affiliation

Achieving precise control of molecular self-assembly to form designed three-dimensional (3D) structures is a major goal in nanoscale science and technology. Using scanning tunnelling microscopy and density functional theory calculations, we show that a 2D covalent organic framework (COF-1) can template solution-processed C₆₀ guest molecules to form several solvent-dependent structural arrangements and morphologies via a 2D to 3D growth process. When 1,2,4-tricholorobenzene is used as solvent, C₆₀ molecules form a template-defined close-packed structure. When heptanoic acid is used as solvent, a range of lower density architectures that deviate from the template-defined close packing are observed. We attribute this difference to the co-adsorption of the heptanoic acid solvent molecules, which is only achieved in the presence of the template. This work demonstrates the possibility to precisely control 3D molecular self-assembly through the synergistic combination of template and solvent effects.

中文翻译：

通过组合溶剂和模板效应控制从2D到3D的富勒烯结晶

实现分子自组装的精确控制以形成设计的三维（3D）结构是纳米级科学技术的主要目标。使用扫描隧道显微镜和密度泛函理论计算，我们显示了2D共价有机骨架（COF-1）可以通过2D到3D生长过程对溶液处理的C ₆₀客体分子进行模板化，以形成几种溶剂依赖性的结构排列和形态。当使用1,2,4-三氯苯作为溶剂时，C ₆₀分子形成模板定义的密排结构。当使用庚酸作为溶剂时，会观察到一系列偏离模板定义的紧密堆积的低密度结构。我们将此差异归因于庚酸溶剂分子的共吸附，这仅在模板存在下才能实现。这项工作证明了通过模板和溶剂效应的协同组合来精确控制3D分子自组装的可能性。

更新日期：2017-11-08

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