A covalent organic polymer containing dative B ← N bonds: synthesis, single crystal structure, and physical properties

Jinghang Wu; Jiahe Liu; Limei Rao; Yunchen Long; Qianfeng Gu; Xin Wang; Lei Zhang; Fangyuan Kang; Lang Jiang; Dangyuan Lei; Qichun Zhang

doi:10.1039/D4QI02121E

A covalent organic polymer containing dative B ← N bonds: synthesis, single crystal structure, and physical properties†

Jinghang Wu,^a Jiahe Liu,^a Limei Rao,^c Yunchen Long,^a Qianfeng Gu,^a Xin Wang,^a Lei Zhang,^a Fangyuan Kang,

^a Lang Jiang,

*^c Dangyuan Lei

*^a and Qichun Zhang

*^ab

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* Corresponding authors

^a Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR 999077, P. R. China
E-mail: qiczhang@cityu.edu.hk, dangylei@cityu.edu.hk

^b Department of Chemistry, Center of Super-Diamond and Advanced Films (COSDAF) & Hong Kong Institute of Energy (HKICE), City University of Hong Kong, Hong Kong SAR 999077, P. R. China

^c Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
E-mail: ljiang@iccas.ac.cn

Abstract

Dative boron ← nitrogen (B ← N) bonds are important in the construction of crystalline covalent organic polymers/frameworks (COPs/COFs). Herein, 9,10-di(4-pyridyl)anthracene (DPA) and 1,4-bis(benzodioxaborolane)benzene (BACT) were employed as building blocks to prepare single crystals of a functional COP (CityU-30). Detailedly, DPA and BACT were connected together through dative B ← N bonds to form zigzag polymer chains, and the neighboring chains interacted with each other through hydrogen bonds to form a pseudo-two-dimensional structure. The observed significant decrease in the fluorescence intensity of CityU-30 compared to that of DPA indicates a pronounced photothermal effect in CityU-30. This research reveals the crucial role of B ← N bonds in designing innovative COPs and guides future materials research studies.

This article is part of the themed collection: Inorganic Chemistry Frontiers 10th Anniversary Collection

Inorganic Chemistry Frontiers

A covalent organic polymer containing dative B ← N bonds: synthesis, single crystal structure, and physical properties†

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A covalent organic polymer containing dative B ← N bonds: synthesis, single crystal structure, and physical properties

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