Thiophene-based conjugated microporous polymers: preparation, porosity, exceptional carbon dioxide absorption and selectivity

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Abstract

Thiophene-based conjugated microporous polymers show high CO ₂ uptake ability of 756–817 (60 bar/318 K) and good adsorption selectivity for CO ₂ over N ₂ and CH ₄.

Abstract

The preparation and sorption properties of thiophene-based conjugated microporous polymers (CMPs) have been reported. The BET surface area of these porous polymers varied between 622 and 911 m ² g ⁻¹, and SCMP-COOH@1 showed an excellent CO ₂ uptake capacity of 817 mg g ⁻¹ at 318 K under 60 bar pressure. In addition, SCMPs show good adsorption selectivity for CO ₂ over N ₂ and CH ₄.

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Conjugated microporous polymers: design, synthesis and application.

Yanhong Xu, Shangbin Jin, Hong Xu … (2013)

Conjugated microporous polymers (CMPs) are a class of organic porous polymers that combine π-conjugated skeletons with permanent nanopores, in sharp contrast to other porous materials that are not π-conjugated and with conventional conjugated polymers that are nonporous. As an emerging material platform, CMPs offer a high flexibility for the molecular design of conjugated skeletons and nanopores. Various chemical reactions, building blocks and synthetic methods have been developed and a broad variety of CMPs with different structures and specific properties have been synthesized, driving the rapid growth of the field. CMPs are unique in that they allow the complementary utilization of π-conjugated skeletons and nanopores for functional exploration; they have shown great potential for challenging energy and environmental issues, as exemplified by their excellent performance in gas adsorption, heterogeneous catalysis, light emitting, light harvesting and electrical energy storage. This review describes the molecular design principles of CMPs, advancements in synthetic and structural studies and the frontiers of functional exploration and potential applications.