Synthesis of cost-effective porous polyimides and their gas storage properties

Luo, Yi; Li, Buyi; Liang, Liyun; Tan, Bien

doi:10.1039/c1cc11466b

Cited by 102 publications

(73 citation statements)

References 32 publications

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“…9a). This adsorption capacity of PCTP-1 was higher than that for the previously reported MOFs and POPs [38][39][40][41][42][43][44][45][46][47][48][49][50][51]. Notable examples include, Zn TEPO-1-3 (69.7-91.9 mg g -1 ) [46], carbon coating mesoporous carbon nitride (134.2 mg g -1 ) [47], and others [48][49][50][51].…”

Section: Resultscontrasting

confidence: 60%

Covalent triazine polymers using a cyanuric chloride precursor via Friedel–Crafts reaction for CO2 adsorption/separation

Puthiaraj

Kim

Ahn

2016

Chemical Engineering Journal

101

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Section: Resultscontrasting

confidence: 60%

Covalent triazine polymers using a cyanuric chloride precursor via Friedel–Crafts reaction for CO2 adsorption/separation

Puthiaraj

Kim

Ahn

2016

Chemical Engineering Journal

101

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“…Calcd for C 69 H 30 N 6 O 6 : C, 73.76; H, 2.91; N, 8.09; O, 9.24. Found: C, 73.46; H, 3.65; N, 9.43; O, n.d. A series of concentrations of melamine in DMSO normally30,15, 6, 3.3, and 2.5 g L −1 were used to synthesize PI networks in order to investigate the "template" effect of DMSO in micropore formation. If it is not specifically indicated, PI-1 mentioned is the PI network synthesized at a concentration of 15 g L −1 .…”

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confidence: 99%

Fluorescent Microporous Polyimides Based on Perylene and Triazine for Highly CO₂-Selective Carbon Materials

2015

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Carbon dioxide (CO 2 ) capture from point sources like coalfired power plants is a potential solution for stabilizing atmospheric CO 2 content to avoid global warming. Sorbents with high and reversible CO 2 uptake, high CO 2 selectivity, good chemical and thermal stability, and low cost are desired for the separation of CO 2 from N 2 in flue or natural gas. We report here, for the first time, on the synthesis of new microporous polyimide (PI) networks from the condensation of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) and 1,3,5-triazine-2,4,6-triamine (melamine) using a Lewis acid catalyst zinc acetate/imidazole complex. These PI network materials, prepared in the absence and presence of dimethyl sulfoxide (DMSO) as weak solvent template, exhibit strong fluorescence. Nitrogencontaining carbons can be accessed from our PI networks via a simple thermal pyrolysis route. The successful construction of new microporous PI networks and derived N-containing carbons is shown here to provide promising CO 2 sorbents with high uptake capacities (15 wt %) combined with exceptional selectivities over N 2 (240), while their fluorescent properties can be exploited for simple sensing.

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“…In this contribution, to induce the hyperbranched polyimide network, the central monomer of tetra(4,6‐diamino‐ s ‐triazine‐2‐yl)tetraphenylmethane (M1) described in Scheme was synthesized by following a method previously reported in the literature . To synthesize the POP, M1 and naphthalenetetracarboxylic dianhydride (NTCDA) were dissolved with a molar ratio of 1:4 in dimethyl sulfoxide (DMSO) . Then, the solution was refluxed for 72 h (Scheme ).…”

Section: Methodsmentioning

confidence: 99%

The Triazine‐based Porous Organic Polymer: Novel Synthetic Strategy for High Specific Surface Area

Park

2017

Bulletin Korean Chem Soc

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Low-density porous materials conjugated with organic compounds have garnered considerable scientific attention, because the diverse pore structures and sizes can be easily tuned by simply changing constructional units, even without varying the synthetic route.1 Among the class of low-density porous materials, porous organic polymers (POPs) are the most cost-effective materials, with high-accessible surface area. Based on the nature of the polymerization, strong covalent bonds with various functionalities such as amide, ester, and imine can be easily formed according to the choice of monomers. Moreover, the polymer can also be hyperbranched depending on the monomer structures together with cross-linking between hyperbranched chains. Therefore, high specific surface area can be achieved, although this strategy generally results in amorphous materials. Recently, several nitrogen-rich POPs based on triazine moiety have been synthesized for CO 2 capture, catalysts, and the precursors of N-doped graphenes.3,4 As nitrogen atoms in adsorbents are strong Lewis base sites, these can provide favorable binding sites for CO 2 and metals which can be utilized for catalysts. However, the high specific surface area with triazine moieties has been achieved by trimerization reaction of dicyano-aromatic compounds under harsh conditions requiring high temperature or super acid solution. In this contribution, to induce the hyperbranched polyimide network, the central monomer of tetra(4,6-diamino-s-triazine-2-yl)tetraphenylmethane (M1) described in Scheme 1 was synthesized by following a method previously reported in the literature. 6 To synthesize the POP, M1 and naphthalenetetracarboxylic dianhydride (NTCDA) were dissolved with a molar ratio of 1:4 in dimethyl sulfoxide (DMSO).7 Then, the solution was refluxed for 72 h (Scheme 1). After completion of the reaction, the resulting solution was suspended in water and filtrated. Lastly, the product was purified with a successive Soxhlet extraction with water, methanol, and ethanol. Finally, half of the resulting POP was dried under vacuum at 100 C, and the other half was soaked in ethanol for 72 h with ethanol replacement every 24 h prior to a supercritical CO 2 drying method. , and 65 ppm. The first peak especially has a shoulder at ca. 170 ppm, and peaks in this region presumably arise from the carbon atoms in triazine rings and the carbon atoms in the carbonyl group of imide. In addition, the resonance at approximately 120~155 ppm can be assigned to the aromatic carbons in benzene moieties. The last peak can be associated to the central C atoms of the triphenylmethane moieties in the resulting polyimide network. Therefore, based on all the above characteristic peaks, it is clearly demonstrated that the desired POP as a new copolymer network was successfully synthesized. The pore structure of the POP was probed by N 2 adsorption/desorption isotherm analyses at 77 K using two aforementioned activation methods (Figure 2(a) and (b)). The isotherms for both polyamide networks represent a ...

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Synthesis of cost-effective porous polyimides and their gas storage properties

Abstract: Porous polyimide (PI) networks with surface area up to 660 m(2) g(-1) were synthesized by planar structure monomers without detrimental catalysts.

Cited by 102 publications

References 32 publications

Covalent triazine polymers using a cyanuric chloride precursor via Friedel–Crafts reaction for CO2 adsorption/separation

Covalent triazine polymers using a cyanuric chloride precursor via Friedel–Crafts reaction for CO2 adsorption/separation

Fluorescent Microporous Polyimides Based on Perylene and Triazine for Highly CO₂-Selective Carbon Materials

The Triazine‐based Porous Organic Polymer: Novel Synthetic Strategy for High Specific Surface Area

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Synthesis of cost-effective porous polyimides and their gas storage properties

Abstract: Porous polyimide (PI) networks with surface area up to 660 m(2) g(-1) were synthesized by planar structure monomers without detrimental catalysts.

Cited by 102 publications

References 32 publications

Covalent triazine polymers using a cyanuric chloride precursor via Friedel–Crafts reaction for CO2 adsorption/separation

Covalent triazine polymers using a cyanuric chloride precursor via Friedel–Crafts reaction for CO2 adsorption/separation

Fluorescent Microporous Polyimides Based on Perylene and Triazine for Highly CO2-Selective Carbon Materials

The Triazine‐based Porous Organic Polymer: Novel Synthetic Strategy for High Specific Surface Area

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Fluorescent Microporous Polyimides Based on Perylene and Triazine for Highly CO₂-Selective Carbon Materials