Microporous Polyisocyanurate and Its Application in Heterogeneous Catalysis

Imidazolium salt-modified porous hypercrosslinked polymers for synergistic CO2 capture and conversion

“…8a,15 To prove this, reactions under low CO 2 pressure (0.2 MPa vis 1 MPa) were carried out. As shown in Table 2, POM3-IM retained more than half of its 15 original catalytic activity at low CO 2 pressure (42% yield vis 78% yield), while PS-IM and homogeneous BMIC almost lost all their catalytic activities (entries 9-11). 42% yield of POM3-IM catalyst at 0.2 MPa is higher than PS-IM (30%) and close to BMIC catalysts (49%) under 1 MPa.…”

“…S12-S16 vs S5-S11, ESI †). 3g The nitrogen content of porous materials from bis-substituted monomers was determined by elemental anaylsis to be among 1.8~2.8 wt% 15 (imidazolium loading 0.6~1.0 mmol/g) (Table S1, ESI †). Polymers synthesized from mono-substituted monomers gave much lower nitrogen loading, especially for POM6-IM.…”

“…Furthermore, epoxides functionalized with alkene or long 10 hydrophobic chain were also suitable substrates for this catalytic system (entries 5-8). Compared with other reported functionalized porous organic polymers (Table S3), 3a, 3h the POM-IM is indeed very promising as a heterogeneous organocatalyst for two respects: the catalysts were synthesized in 15 a simple and easily controllable way, and the reactions proceeded well under relatively mild condition.…”

Nanoporous Polymers: Bridging the Gap between Molecular and Solid Catalysts?

“…12, 13 In analogy to nitrogen‐rich CTF materials with a high concentration of coordination sites, several approaches have been reported involving amines as functional groups. Thus, nitrogen‐rich materials with different degrees of crystallinity are obtained by forming, for example, imine (Scheme ),14 imide,15 aminal,16 hydrazone,17 and isocyanurate18 linkages.…”

“…Recently, a combined density functional theory and spectroscopic study provided insight into the metal coordination environment within the nanoporous catechol‐containing polymers 71. Catalytic activity was shown for a microporous polyisocyanurate that was synthesized from bifunctional isocyanate linkers by a cyclotrimerization reaction catalyzed by a NHC (Scheme ) 18. Although the material does not contain catechol moieties, the methoxy group containing linker in close proximity to the carbonyl groups of the isocyanurate connector was shown to coordinate FeCl 2 .…”