Centre Énergie, Matériaux et Télécommunications, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada.
Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Québec H3A 0B8, Canada.
Chem Commun (Camb). 2019 Nov 7;55(90):13586-13589. doi: 10.1039/c9cc05674b.
We report on the synthesis of a covalent organic framework based on the low-symmetry 1,3-benzenediboronic acid precursor. Two distinct polymorphs are obtained, a honeycomb network and Sierpiński triangles, as elucidated by scanning tunneling microscopy. Control over polymorph formation was achieved by varying the precursor concentration for on-surface synthesis.
我们报告了一种基于低对称 1,3-苯二硼酸前体的共价有机骨架的合成。通过扫描隧道显微镜阐明，得到了两种不同的多晶型物，即蜂窝网络和 Sierpiński 三角形。通过改变表面合成的前体浓度，可以控制多晶型物的形成。
