Carbazolylene‐Ethynylene Macrocycle based Conductive Covalent Organic Frameworks
Carbazolylene‐Ethynylene Macrocycle based Conductive Covalent Organic Frameworks
复制标题
基于咔唑基-乙炔大环的导电共价有机框架
DOI：
10.1002/anie.202303538
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Zhang, Wei
中科院分区：
文献类型：
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作者：
Huang, Shaofeng;Choi, Ji Yong;Xu, Qiucheng;Jin, Yinghua;Park, Jihye;Zhang, Wei
Two covalent organic frameworks consisting of carbazolylene‐ethynylene shape‐persistent macrocycles with azine (MC‐COF‐1) or imine (MC‐COF‐2) linkages were synthesized via imine condensation. The obtained 2D frameworks are fully conjugated which imparts semiconducting properties. In addition, the frameworks showed high porosity with aligned accessible porous channels along the z axis, serving as an ideal platform for post‐synthetic incorporation of I2into the channels to enable electrical conductivity. The resulting MC‐COF‐1 showed an electrical conductivity up to 7.8×10−4S cm−1at room temperature upon I2doping with the activation energy as low as 0.09 eV. Furthermore, we demonstrated that the electrical properties of both MC‐COFs are switchable between electron‐conducting and insulating states by simply implementing doping‐regenerating cycles. The knowledge gained in this study opens new possibilities for the future development of tunable conductive 2D organic materials.
