Switching porosity of stable triptycene-based cage via solution-state assembly processes

It is a great challenge to tune the porosity of porous materials. As most porous organic cages are soluble, solution processability can be a possible way to regulate the porosity of such materials. Herein, a triptycene-based cage (TC) is demonstrated to be stable in acid, base or boiling water. Mean...

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Published inRSC advances Vol. 10; no. 15; pp. 9088 - 9092
Main Authors Ma, Hui, Zhai, Tian-Long, Wang, Zhen, Cheng, Guang, Tan, Bien, Zhang, Chun
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 03.03.2020
The Royal Society of Chemistry
Subjects
Assembly
Cages
Chemistry
Crystallization
Dichloromethane
Porosity
Porous materials
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Summary:It is a great challenge to tune the porosity of porous materials. As most porous organic cages are soluble, solution processability can be a possible way to regulate the porosity of such materials. Herein, a triptycene-based cage (TC) is demonstrated to be stable in acid, base or boiling water. Meanwhile, its porosity can be tuned by adjusting the solution-state assembly processes. TC molecules crystallized slowly from solution exhibit nearly no porosity to nitrogen (off-state). While, after rapid precipitating from methanol/dichloromethane solution, the obtained TC (TC-rp) is in a porous state and exhibit a high BET surface area of 653 m g (on-state).
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H. M., T. L. Z. and Z. W. contributed equally to this work.
ISSN:2046-2069
2046-2069
DOI:10.1039/d0ra00128g