Abstract
It remains a great challenge to design and synthesize a porous material for CO2 capture and sensing simultaneously. Herein, strategy of “cage to frameworks” is demonstrated to synthesize fluorescent porous organic polymer (pTOC) by using tetraphenylethylene‐based oxacalixarene cage (TOC) as the monomer. The networked cages (pTOC) have improved porous properties, including Brunauer–Emmett–Teller surface area and CO2 capture compared with its monomer TOC, because the polymerization overcomes the window‐to‐arene packing modes of cages and turns on their pores. Moreover, pTOC displays prominent reversible fluorescence enhancement in the presence of CO2 in different dispersion systems and fluorescence recovery for CO2 release in the presence of NH3·H2O, and is thus very effective to detect and quantify the fractions of CO2 in a gaseous mixtures.
Highlights
It remains a great challenge to design and synthesize a porous material surface area of 3758 m2 g−1
Organic molecular cages (OMCs)[1,2,3] have attracted great atten- with zinc or sodium ions, but their instability limited their tion in the field of porous organic materials because of their applications in acidic or basic conditions
To overcome the window-to-arene stacking and turn on the pores of tetraphenylethylene-based oxacalixarene cage (TOC), we polymerized TOC into emissive cage-based polymeric framework by Yamamoto-type Ullmann crosscoupling reaction considering the polymerizable groups of chlorine directing toward outside the cage (Scheme 1 and Supporting Information)
Summary
It remains a great challenge to design and synthesize a porous material surface area of 3758 m2 g−1. To overcome the window-to-arene stacking and turn on the pores of TOC, we polymerized TOC into emissive cage-based polymeric framework (pTOC) by Yamamoto-type Ullmann crosscoupling reaction considering the polymerizable groups of chlorine directing toward outside the cage (Scheme 1 and Supporting Information).
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