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https://doi.org/10.1021/acs.chemmater.8b00117
Title: | Covalent Organic Framework with Frustrated Bonding Network for Enhanced Carbon Dioxide Storage | Authors: | Gao, Qiang Li, Xing Ning, Guo-Hong Xu, Hai-Sen Liu, Cuibo Tian, Bingbing Tang, Wei Loh, Kian Ping |
Keywords: | Science & Technology Physical Sciences Technology Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science DIFFERENT KINDS CONSTRUCTION CRYSTALLINE CAPTURE POLYMER PORES |
Issue Date: | 13-Mar-2018 | Publisher: | AMER CHEMICAL SOC | Citation: | Gao, Qiang, Li, Xing, Ning, Guo-Hong, Xu, Hai-Sen, Liu, Cuibo, Tian, Bingbing, Tang, Wei, Loh, Kian Ping (2018-03-13). Covalent Organic Framework with Frustrated Bonding Network for Enhanced Carbon Dioxide Storage. CHEMISTRY OF MATERIALS 30 (5) : 1762-1768. ScholarBank@NUS Repository. https://doi.org/10.1021/acs.chemmater.8b00117 | Abstract: | © 2018 American Chemical Society. Two-dimensional covalent organic framework (COF) materials can serve as excellent candidates for gas storage due to their high density of periodically arranged pores and channels, which can be tethered with functional groups. However, post-functionalization tends to disturb the structure of the COF; thus, it is attractive to develop synthetic approaches that generate built-in functionalities. Herein, we develop a new strategy for the construction of 2D-COFs with built-in, unreacted periodic bonding networks by solvent-directed divergent synthesis. Tetraphenylethane (TPE), which combines both π-rigidity for stacking and rotational flexibility, is selected as the central core for COF construction. By solvent control, two distinct COF structures could be constructed, arising from a [4 + 4] condensation pathway (TPE-COF-I) or an unusual [2 + 4] pathway (TPE-COF-II). TPE-COF-II contains unreacted linker units arranged around its pores and shows greatly enhanced carbon dioxide adsorption performance (23.2 wt %, 118.8 cm3 g-1 at 1 atm, 273 K), which is among the best COF materials for CO2 adsorption reported to date. | Source Title: | CHEMISTRY OF MATERIALS | URI: | https://scholarbank.nus.edu.sg/handle/10635/167666 | ISSN: | 0897-4756 1520-5002 |
DOI: | 10.1021/acs.chemmater.8b00117 |
Appears in Collections: | Staff Publications Elements |
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