A Wavy Two-Dimensional Covalent Organic Framework from Core-Twisted Polycyclic Aromatic Hydrocarbons

authors	Martinez-Abadia, M; Stoppiello, CT; Strutynski, K; Lerma-Berlanga, B; Marti-Gastaldo, C; Saeki, A; Melle-Franco, M; Khlobystov, AN; Mateo-Alonso, A
nationality	International
journal	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
keywords	POROUS MATERIALS; CRYSTALLINE; PLATFORM; STACKING; ELECTRON; DESIGN
abstract	A high degree of crystallinity is an essential aspect in two-dimensional covalent organic frameworks, as many properties depend strongly on the structural arrangement of the different layers and their constituents. We introduce herein a new design strategy based on core-twisted polycyclic aromatic hydrocarbon as rigid nodes that give rise to a two-dimensional covalent organic framework with a wavy honeycomb (chairlike) lattice. The concave-convex self-complementarity of the wavy two-dimensional lattice guides the stacking of framework layers into a highly stable and ordered covalent organic framework that allows a full 3D analysis by transmission electron microscopy revealing its chairlike honeycomb facets and aligned mesoporous channels. Remarkably, the waviness of the framework does not disrupt the interlayer pi-pi stacking that shows charge transporting properties similar to those of planar covalent organic frameworks. The implementation of core-twisted aromatics as building blocks for covalent organic frameworks brings new possibilities in the design of highly ordered organic materials.
publisher	AMER CHEMICAL SOC
issn	0002-7863
isbn	1520-5126
year published	2019
volume	141
issue	36
beginning page	14403
ending page	14410
digital object identifier (doi)	10.1021/jacs.9b07383
web of science category	Chemistry, Multidisciplinary
subject category	Chemistry
unique article identifier	WOS:000486361800052