Premium
Topology‐Templated Synthesis of Crystalline Porous Covalent Organic Frameworks
Author(s) -
Jin Enquan,
Geng Keyu,
Lee Ka Hung,
Jiang Weiming,
Li Juan,
Jiang Qiuhong,
Irle Stephan,
Jiang Donglin
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202004728
Subject(s) - imine , polymerization , covalent bond , conjugated system , topology (electrical circuits) , materials science , template , polymer , covalent organic framework , nanotechnology , carbon fibers , tetragonal crystal system , dynamic covalent chemistry , molecule , chemistry , organic chemistry , catalysis , crystal structure , supramolecular chemistry , mathematics , combinatorics , composite number , composite material
A strategy is presented for the synthesis of crystalline porous covalent organic frameworks via topology‐templated polymerization. The template is based on imine‐linked frameworks and their (001) facets seed the C=C bond formation reaction to constitute 2D sp 2 carbon‐conjugated frameworks. This strategy is applicable to templates with different topologies, enables designed synthesis of frameworks that cannot be prepared via direct polymerization, and creates a series of sp 2 carbon frameworks with tetragonal, hexagonal, and kagome topologies. The sp 2 carbon frameworks are highly luminescent even in the solid state and exhibit topology‐dependent π transmission and exciton migration; these key fundamental π functions are unique to sp 2 carbon‐conjugated frameworks and cannot be accessible by imine‐linked frameworks, amorphous analogues, and 1D conjugated polymers. These results demonstrate an unprecedented strategy for structural and functional designs of covalent organic frameworks.