title: Covalent organic frameworks formed with two types of covalent bonds based on orthogonal reactions.
abstract: Covalent organic frameworks (COFs) are excellent candidates for various applications. So far, successful methods for the constructions of COFs have been limited to a few condensation reactions based on only one type of covalent bond formation. Thus, the exploration of a new judicious synthetic strategy is a crucial and emergent task for the development of this promising class of porous materials. Here, we report a new orthogonal reaction strategy to construct COFs by reversible formations of two types of covalent bonds. The obtained COFs consisting of multiple components show high surface area and high H2 adsorption capacity. The strategy is a general protocol applicable to construct not only binary COFs but also more complicated systems in which employing regular synthetic methods did not work.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, Singapore 637371, Singapore.
authors.forename: Yongfei
authors.initials: Y
authors.lastname: Zeng
authors.forename: Ruyi
authors.initials: R
authors.lastname: Zou
authors.forename: Zhong
authors.initials: Z
authors.lastname: Luo
authors.forename: Huacheng
authors.initials: H
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Yao
authors.forename: Xing
authors.initials: X
authors.lastname: Ma
authors.forename: Ruqiang
authors.initials: R
authors.lastname: Zou
authors.forename: Yanli
authors.initials: Y
authors.lastname: Zhao