Please use this identifier to cite or link to this item: 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
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