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Issue 35, 2011
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Targeted synthesis of a porous aromatic framework with a high adsorption capacity for organic molecules

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Abstract

Tetrakis(4-bromophenyl)methane (TBPM) as a tetrahedral unit and a diboronic acid as a linker were selected to couple the phenyl rings into a porous aromatic framework, PAF-11. PAF-11 was polymerized via a Suzuki coupling reaction. A TG analysis showed that PAF-11 is thermally stable up to 400 °C in air. PAF-11 also has a high chemical stability and cannot be dissolved or decomposed in common solvents or concentrated hydrochloric acid. A N2 sorption measurement on activated PAF-11 revealed a surface area of 952 m2 g−1 in the Langmuir model. PAF-11 also shows a considerable adsorption capacity for H2. Interestingly, PAF-11 is a highly hydrophobic material but with a high methanol uptake (654 mg g−1 at saturated vapour pressure and room temperature). PAF-11 also exhibits high adsorption abilities for small aromatic molecules such as benzene and toluene (874 and 780 mg g−1, respectively, at saturated vapour pressure and room temperature) due to its aromatic framework. This ability of PAF-11 could be very useful to eliminate harmful small aromatic molecules produced by industry.

Graphical abstract: Targeted synthesis of a porous aromatic framework with a high adsorption capacity for organic molecules

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Article information


Submitted
06 May 2011
Accepted
22 Jun 2011
First published
03 Aug 2011

J. Mater. Chem., 2011,21, 13498-13502
Article type
Paper

Targeted synthesis of a porous aromatic framework with a high adsorption capacity for organic molecules

Y. Yuan, F. Sun, H. Ren, X. Jing, W. Wang, H. Ma, H. Zhao and G. Zhu, J. Mater. Chem., 2011, 21, 13498
DOI: 10.1039/C1JM11998B

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