Triazatruxene based covalent organic framework and its quick-response fluorescence-on nature towards electron rich arenes

Two new 2D covalent organic frameworks (COFs) with a regular honeycomb lattice, TAT-COF-1 and TAT-COF-2, were synthesized based on triazatruxene derivatives. The two COFs, especially TAT-COF-2, have a large BET surface area, good crystallinity, moderate to good hydrogen and carbon dioxide adsorption...

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Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2015-01, Vol.3 (39), p.10066-10069
Main Authors: Xie, Yun-Feng, Ding, San-Yuan, Liu, Jun-Min, Wang, Wei, Zheng, Qi-Yu
Format: Article
Language:English
Subjects:
Aromatic compounds
Carbon dioxide
Covalence
Derivatives
Ethanol
Ethyl alcohol
Fluorescence
Honeycomb
Solvents
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Summary:Two new 2D covalent organic frameworks (COFs) with a regular honeycomb lattice, TAT-COF-1 and TAT-COF-2, were synthesized based on triazatruxene derivatives. The two COFs, especially TAT-COF-2, have a large BET surface area, good crystallinity, moderate to good hydrogen and carbon dioxide adsorption abilities and also possess good CO 2 /N 2 selectivity. When suspended in ethanol, the fluorescence of TAT-COF-2 could be enhanced or quenched by different solvents. It also shows a rapid fluorescence-on and fluorescence-off nature towards electron rich and deficient arene vapors, respectively. After being exposed to electron-rich arene vapors, the enhanced fluorescence intensity can be recovered to normal level after 5 minutes in an ambient atmosphere, which means the sample could be reused conveniently for detecting electron rich arene vapors.
ISSN:2050-7526
2050-7534
DOI:10.1039/C5TC02256H