Switching porosity of stable triptycene-based cage via solution-state assembly processes. Issue 15 (3rd March 2020)

• Record Type: Journal Article
• Authors: Ma, Hui; Zhai, Tian-Long; Wang, Zhen; Cheng, Guang; Tan, Bien; Zhang, Chun
• Is Part Of: RSC advances. Volume 10:Issue 15(2020)
• Page Start: 9088
• Page End: 9092
• Publication Date: 2020-03-03
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra00128g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Here, a kind of triptycene-based cage is demonstrated to have good chemical stability in acid, base and boiling water. Moreover, its porosity can be tuned by varying the solution-state assembly processes. Abstract : 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 2 g −1 (on-state).