Tetraphenyladamantane-based polyaminals with ultrasmall pore, large specific surface area and abundant CO2-philic aminal groups are successfully synthesized, which exhibit simultaneously high CO2 adsorption capacity of 17.6 wt % (4.0 mmol g–1, 273 K/1.0 bar) selectivities CO2/N2 (104) CO2/CH4 (24). Especially, at the low pressure, e.g., 0.15 bar, uptake K can reach 8.7 (1.97 g–1). The adsorption/selectivity properties superior to most microporous organic polymers (MOPs) reported in...

Two nanoporous semi-cycloaliphatic polyaminal networks (sPANs) show promising applications for capturing toxic gases and contaminants because of remarkably high uptakes SO 2 , NH 3 I .

Sulfur dioxide (SO2), a pervasive air pollutant, poses significant environmental and health risks, necessitating advanced materials for its efficient capture. Nanoporous organic polymers (NOPs) have emerged as promising candidates; however, their development is often hindered by high synthesis temperatures, complex precursors, limited SO2 selectivity. Herein, we report room-temperature, cost-effective of carbazole-based nanoporous (CNOPs) using 1,3,5-trioxane paraldehyde, offering...

Ultramicroporous semicycloaliphatic polyimides with major pore sizes less than 0.5 nm are synthesized through imidization reaction between different aromatic tetraamines and cycloaliphatic dianhydrides. The synergistic role of abundant CO2-philic imide rings the molecular sieving effect ultrasmall pores in polyimide network bring about high adsorption selectivity CO2/CH4 (37.2) CO2/N2 (136.7). In addition, it is interesting to observe that, under ambient condition (298 K/1 bar), n-butane...

This paper presents the first report on employing fluorescent porous organic polymers as sensors for detection of toxic pesticides. Specifically, micro- and mesoporous polyaminals with pendant triphenylamine dibromotriphenylamine chromophore groups are synthesized, which exhibit BET surface area up to 507 m2 g–1, adjustable pore sizes in range from 0.5 36.2 nm can emit bright turquoise light under ultraviolet lamp. Using insecticide (fenitrothion) herbicides (trifluralin glyphosate)...

Four porous poly(Schiff-base)s, PSN-DA, PSN-TAPB, PSN-TAPA and PSN-TAPM, are synthesized via one-pot condensation from 1,3,5,7-tetrakis(4-formylphenyl)adamantane with rod-like m-phenyldiamine, triangular 1,3,5-tris(4-aminophenyl)benzene tris(4-aminophenyl)amine as well tetrahedral tetrakis(4-aminophenyl)methane, respectively. It is found that the variation of geometrical shape building blocks significantly alters surface areas, pore sizes distributions resultant polymers thereby remarkably...

This work reveals that furfural and 2-thenaldehyde can readily react with melamine via "one-step" polycondensation to yield hyper-cross-linked sulfur-, nitrogen- oxygen-rich microporous polyaminals promising applications in adsorption of gases toxic organic vapors.

Microporous polyimides containing a high density of trifluoromethyls or benzophenone with uniform pores are synthesized, which possess uptakes for CO₂and aromatic and aliphatic vapors, exhibiting potential in gas storage recovery toxic organic vapors.

Two triphenylamine-based nanoporous organic polymers were synthesized through the self-condensation of AB 2 monomers. These exhibit promising potential for capturing toxic gases and contaminants due to their highly effective uptake SO .

Tetraphenyladamantane-based porous poly(Schiff base)s with BET surface area (>1000 m(2) g(-1)), CO2 uptake (15 wt%, 273 K/1 bar) and H2 (1.26 77 were synthesized. The structure-directing effect of isomers phenyl diamines on building architecture was investigated.

Carboxyl-, hydroxyl-, and nitro-functionalized porous polyaminals PAN-CP, PCN-HP, PAN-NP are synthesized by using the commercially available 4-carboxylbenzaldehyde, 4-hydroxylbenzaldehyde, 4-nitrobenzaldehyde as monomers to polymerize with melamine, respectively, one-step solution polymerization technique. The effects of functional substituents on CO2 adsorption energy porosity parameters studied. Compared unsubstituted polymer (PAN-P), PAN-CP PAN-HP exhibit increased BET surface areas,...

High adsorption selectivities for benzene and cyclohexane of three covalent triazine frameworks have been prepared via Friedel–Crafts reactions.

Nitrogen-rich microporous polymers are prepared <italic>via</italic> a catalyst-free polymerization reaction using formamide derivatives as monomers, which exhibit outstandingly high CO₂/N₂ selectivity up to 151 and 173 at 273 K under dry humid conditions, respectively.

Monodispersed ultramicroporous semi-cycloaliphatic polyimides (sPIs) were synthesized<italic>via</italic>solution polycondensation and possess high uptakes for CO₂, H₂, aromatic aliphatic vapors, exhibiting potential in gas storage the recovery of toxic organic vapors.

Seeking porphyrin-based nanoporous organic polymers for adsorption and separation of simple molecular gases (e.g., CO2, C2H6, CH4, etc.) is still challenging. Herein, we report three-dimensional polymer (PNOP) networks based on tetrahedral-structured building blocks, which represent ideal materials the adsorption/separation carbon dioxide (CO2). Two PNOP networks, denoted as PNOP-1 PNOP-2, have been prepared successfully by a facile one-pot method using pyrrole with blocks...

Synthetic modulation of pores sizes in polycyanurates from 1.17 to 17.3 nm was achieved by varying geometrical shape, size and number functional groups monomers. The relationships between porous structure adsorptions gases organic hydrocarbons were studied.

This paper presents the sulfonation and silver-ionization modifications using aromatic microporous polyimide (MPI) as precursor to obtain a new Ag+-decorated porous material (MPI-Ag). FTIR, XPS, EDX spectra demonstrate chemical structure of resultant MPI-Ag homogeneously distribution silver ions within network. The evolution porosity parameters elemental compositions postmodified polymers their effects on adsorption/separations C1–C3 hydrocarbons CO2 gas are studied in detail. results show...

The Friedel–Crafts (FC) reaction is a prominent synthetic tool for rapidly constructing complex molecular frameworks, but syntheses of carbazole-based nanoporous organic polymers (CNOPs) via FC hydroxyalkylation are rare. Herein we report the acid-catalyzed synthesis two CNOP networks, prepared (using p-phthalaldehyde) from 1,3,5-tris(9-carbazolyl)benzene and tris[4-(9H-carbazol-9-yl)phenyl]amine. specific surface areas CNOPs ranged 1374 to 1546 m2/g, had hierarchical porous structure with...

The value-added utilization of coal fly ash (CFA) remains a major challenge worldwide, as tens millions tons CFA are stockpiled or landfilled per year in China along, leading to waste resources and environmental pollution. Herein, facile, environmentally friendly, strategy combining modified with polyvinyl chloride (PVC) form CFA/PVC composites, was adopted effectively solve the problems caused by resources. In this process, composites were prepared hot-mixing aluminate coupling agent, PVC...

A nanoporous organic polymer, synthesized from the cycloaliphatic crosslinker 1,3-dibromoadamantane, demonstrates effective adsorption and separation of a benzene/cyclohexane (Bz/Cy) mixture.

Assemblies are widely used in biomedicine, batteries, functional coatings, Pickering emulsifiers, hydrogels, and luminescent materials. Polymerization-induced self-assembly (PISA) is a method for efficiently preparing particles, mainly initiated thermally. However, thermally PISA usually requires significant amount of time energy. Here, we demonstrate the preparation nano-assemblies with controllable morphologies size using ultrasound (20 kHz) assisted ethanol-phase RAFT-PISA three hours....

Investigating the relationship between substituent groups of nanoporous organic polymers and adsorption capacities for SO2, NH3, CO2, I2 is a significant challenge. In this study, four polyaminal networks (NPANs) with methyl or phenyl were prepared, they demonstrated high I2. The NPANs, which referred to as NPAN-1, NPAN-2, NPAN-3, NPAN-4, fabricated via one-pot polycondensation method by using inexpensive p-phthalaldehyde (p-PDA) m-phthalaldehyde (m-PDA) 6-methyl-1,3,5-triazine-2,4-diamine...