These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
3 files

Three-Dimensional Large-Pore Covalent Organic Framework with Stp Topology

submitted on 14.06.2020, 04:09 and posted on 16.06.2020, 10:29 by Hui Li,, jiehua ding, Xinyu Guan, Fengqian Chen, Cuiyan Li, Liangkui Zhu, Ming Xue, Yushan Yan, Valentin Valtchev, Shilun Qiu, Qianrong Fang
Three-dimensional (3D) covalent organic frameworks (COFs) are excellent porous crystalline polymers for numerous applications, but their building units and topological nets have been limited. Herein we report the first 3D large-pore COF with stp topology constructed with a 6-connected triptycene-based monomer. The new COF (termed JUC-564) has high surface area (up to 3300 m2 g-1), the largest pore (43 Å) among 3D COFs, and record-breaking low density in crystalline materials (0.108 g cm-3). The large pore size of JUC-564 is confirmed by the incorporation of a large protein. This study expands the structural varieties of 3D COFs as well as their applications for adsorption and separation of large biological molecules.


Email Address of Submitting Author


Jilin University



ORCID For Submitting Author


Declaration of Conflict of Interest

no conflict of interest


Logo branding