Issue 17, 2013

Nitrogen-rich diaminotriazine-based porous organic polymers for small gas storage and selective uptake

Abstract

A series of new nitrogen-rich aminal-linked porous organic polymers (APOPs) has been constructed by cost-effective and simple condensation reactions between diaminotriazine-based tectonics and benzaldehyde. The facile and one-pot approach suggests a platform to incorporate functional groups in their pores to tune the affinity between gas molecules and the frameworks. Due to the chemical functionalization and nitrogen-rich pore surface, the APOPs with a moderate specific surface area (SBET = 724–1402 m2 g−1) exhibit significant gas adsorption and high isosteric heats of adsorption (CO2: up to 4.54 mmol g−1 at 273 K and 1 bar, 33.3 kJ mol−1; H2: up to 8.95 mmol g−1 at 77 K and 1 bar, 9.4 kJ mol−1). The isosteric heats of adsorption (Qst) can be tuned by the selection of polar group functionalized building blocks, and their values can be enhanced from 26.6 to 33.3 kJ mol−1 for CO2, while the increasing of Qst is beneficial for flue gas separation. Indeed, the strong affinity for CO2 within the APOPs gives rise to a higher CO2 uptake at low pressures (0.15 bar) along with good selectivity over N2.

Graphical abstract: Nitrogen-rich diaminotriazine-based porous organic polymers for small gas storage and selective uptake

Supplementary files

Article information

Article type
Paper
Submitted
09 May 2013
Accepted
11 Jun 2013
First published
13 Jun 2013

Polym. Chem., 2013,4, 4690-4696

Nitrogen-rich diaminotriazine-based porous organic polymers for small gas storage and selective uptake

W. Song, X. Xu, Q. Chen, Z. Zhuang and X. Bu, Polym. Chem., 2013, 4, 4690 DOI: 10.1039/C3PY00590A

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