AI Article Synopsis
- A novel polymer called PIM-BTrip-TB was developed from a specific monomer through a polymerization reaction that utilizes Tröger's base formation.
- The polymer shows impressive physical properties, including a high BET surface area of 870 m²/g, good solubility in chloroform, and robust thin films ideal for measuring gas permeability.
- Although the polymer's gas permeability decreases with aging, it significantly enhances selectivity, indicating its potential for efficient gas separation applications.
Article Abstract
A novel polymer of intrinsic microporosity (PIM) was prepared from a diaminobenzotriptycene monomer using a polymerization reaction based on Tröger's base formation. The polymer (PIM-BTrip-TB) demonstrated an apparent Brunauer, Emmet, and Teller (BET) surface area of 870 m g, good solubility in chloroform, excellent molecular mass, high inherent viscosity and provided robust thin films for gas permeability measurements. The polymer is highly permeable (e.g., H = 9980; O = 3290 Barrer) with moderate selectivity (e.g., H/N = 11.0; O/N = 3.6) so that its data lie over the 2008 Robeson upper bounds for the H/N, O/N, and H/CH gas pairs and on the upper bound for CO/CH. On aging, the polymer demonstrates a drop in permeability, which is typical for ultrapermeable polymers, but with a significant increase in gas selectivities (e.g., O = 1170 Barrer; O/N = 5.4).
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| http://dx.doi.org/10.1021/acsmacrolett.5b00439 | DOI Listing |
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