Porous Organic Polymers Based on Propeller-Like Hexaphenylbenzene Building Units

Chen, Qi; Luo, Min; Wang, Tao; Wang, Jinxiang; Zhou, Ding; Han, Ying; Zhang, Chang-Shan; Yan, Chao‐Guo; Han, Bao‐Hang

doi:10.1021/ma200915f

Cited by 115 publications

(79 citation statements)

References 41 publications

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“…We found exceptional CO 2 /CH 4 selectivities of 52.5 and 62.7 at 1 bar, 298 K for pre-GNF and GNF-1. GNF-1 showed the highest CO 2 /CH 4 selectivity compared to recently reported nitrogen containing nanoporous polymers such as, Li-POPs 29 , PAF-30 (24.3-30.2) 26 , ALP (4-8) 52 and NPOFs (3)(4)(5)(6)(7)(8)(9)(10)(11)(12) 55 . The CO 2 /CH 4 selec- tivity of GNF-1 is also very high compared to the activated carbon (3.7) 56 , thus showing clearly the promise of our bottom-up approach for the preparation of carbon-based frameworks.…”

Section: Gas Sorption Studies Of Pre-gnf and Gnf-1mentioning

confidence: 76%

“…In particular, C-C bond formation reactionsnamely, Pd-catalyzed Sonogashira-Hagira [6][7][8][9][10][11] and SuzukiMiyura cross-coupling reactions, 12,13 Ni-catalyzed Yamamototype Ullmann reaction, 14-21 cyclotrimerization [22][23][24] and FriedelCrafts reactions 25 -played a significant role in the synthesis of several nanoporous polymers, including, conjugated microporous polymers (CMPs), 6-9, 12, 16 porous aromatic frameworks (PAFs), 14,15,17,22,26,27 porous polymer networks (PPNs), 18,20 porous organic polymers (POPs) [28][29][30][31] and hypercrosslinked polymers (HCPs). 25,[32][33][34] Especially, PAFs and PPNs showed exceptional surface areas up to 6461 m 2 g -1 along with good physicochemical stability.…”

Section: Introductionmentioning

confidence: 99%

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Bottom-up Approach for the Synthesis of a Three-Dimensional Nanoporous Graphene Nanoribbon Framework and Its Gas Sorption Properties

Byun

Coskun

2015

Chem. Mater.

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We present a new polymerization strategy, that is catalyst-free Diels-Alder cycloaddition polymerization and subsequent FeCl 3 -catalyzed intramolecular cyclodehydrogenation reaction, to introduce graphene nanoribbons up to 2 nm in length and 1.1 nm in width into a graphene nanoribbon framework (GNF). The first graphene nanoribbon framework showed high thermal stability up to 400 o C in air with relatively narrow pore size distribution and exhibited BET surface area of 679 m 2 g -1 . GNF possesses high affinity for H 2 (Q st 7.7 kJ mol -1 , 1.03 wt% at 77 K, 1 bar), CO 2 (Q st = 28.7 kJ mol -1 , 94.6 mg g -1 at 273 K, 1 bar), and CH 4 (Q st = 24. 1 kJ mol -1 , 11.5 mg g -1 at 273 K, 1 bar). The enhancement in gas affinities was attributed to the unique combination of large π-surface area arising from graphene nanoribbons and small pores (~5.8 Å) in GNF. The application of GNF can also be extended to natural gas purification process with exceptional CO 2 /CH 4 (5:95) selectivity of 62.7, which is being the highest value reported to date at 298 K. Unlike previous studies which focus mostly on increasing the affinity of CO 2 towards the sorbent in order to tune CO 2 /CH 4 selectivity, our approach takes advantage of the kinetic diameter difference between CO 2 (3.30 Å) and CH 4 (3.80 Å), thus offering low-cost efficient alternative for natural gas purification process.

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Section: Gas Sorption Studies Of Pre-gnf and Gnf-1mentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Bottom-up Approach for the Synthesis of a Three-Dimensional Nanoporous Graphene Nanoribbon Framework and Its Gas Sorption Properties

Byun

Coskun

2015

Chem. Mater.

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“…Extension of the linkage among the D4R building block would effectively increase the pore size of the structure to mesoporous range while maintain the topology. Palladium-catalyzed cross-coupling reactions [43] such as Sonogashira reaction and Suzuki reaction, are well developed for synthesis of POFs materials [44][45][46][47], which are verified to be powerful ways to realize these ''blueprints''. In this work, we presented synthesis and properties of a new micro-mesoporous PAF material, PAF-12.…”

Section: Introductionmentioning

confidence: 99%

Targeted synthesis of micro–mesoporous hybrid material derived from octaphenylsilsesquioxane building units

Jing

Sun

Ren

et al. 2013

Microporous and Mesoporous Materials

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“…因此, 我们首先探究了这两种多孔材料的氢气吸附性能, 图 6 是两种聚合物在 77 K 条件下的氢气吸附等温线, 由吸附等温线可知当绝对压力达到 [36] , 仅低于部分比表面积较高, 吸附性能也较优异的材料如 CPOP-1 [37] . 由于具有更高的比表面积, TrpPOP-1 与同类型多孔聚合物 PECONF-1 (～8.2 wt%)和 PECONF-2 (～12.5 wt%)相比, Table 1 Porosity properties and gas uptake capacities of polymers )的吸附热大小相当 [30] .…”

Section: Triptycene-based Microporous Poly(diaminophosphazene)unclassified

Triptycene-Based Microporous Poly(diaminophosphazene)

Li¹,

Li²,

Chen³

et al. 2015

Acta Chim. Sinica

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Porous materials have recently drawn much attention owing to their potential applications in gas storage, separations, and heterogeneous catalysis. As a D 3h -symmetric rigid structure, triptycene and its derivatives can be used as suitable building blocks to prepare porous materials with high porosities. Based on the air-stable hexaammoniumtriptycene hexachloride and hexachlorocyclotriphosphazene, porous polymers (TrpPOP-1 and TrpPOP-2) were prepared via one-step polymerization through N-P linkage. The two polymers were characterized at the molecular level by 13 C NMR and 31 P NMR as well as IR. The two polymers possess type I nitrogen gas sorption isotherm according to the IUPAC classification. Both TrpPOP-1 and TrpPOP-2 show permanent microporous nature with the Brunauer-Emmett-Teller specific surface area of 790 and 640 m 2 •g -1 and exhibit narrow pore size distribution, with dominant pore size locating at 0.59 and 0.63 nm, respectively. Porous polymers with a narrow pore distribution may interact attractively with small gas molecules through improved molecular interaction. Their gas (hydrogen and carbon dioxide) adsorption capacities were measured based on the obtained gas physisorption isotherms. The hydrogen uptake of TrpPOP-1 is 1.30 wt% at 77 K and 1.0 bar, and the carbon dioxide uptake is up to 16.2 wt% at 273 K and 1.0 bar. The higher carbon dioxide loading capacity of TrpPOP-1 may be attributed to its higher charge density at the nitrogen sites of networks that can facilitate local-dipole/quadrupole interactions with carbon dioxide. Meanwhile, the adsorption capacity of the obtained materials for poisonous and harmful organic vapors such as formaldehyde was also investigated. TrpPOP-2 shows a better formaldehyde uptake, which is 5.5 mg•g -1 at 298 K. Formaldehyde, as a volatile organic compound, is a major air pollutant indoor, therefore, the uptake performance of TrpPOP-2 for formaldehyde would be very promising to remove harmful indoor air pollutant in the environment.

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Porous Organic Polymers Based on Propeller-Like Hexaphenylbenzene Building Units

Cited by 115 publications

References 41 publications

Bottom-up Approach for the Synthesis of a Three-Dimensional Nanoporous Graphene Nanoribbon Framework and Its Gas Sorption Properties

Bottom-up Approach for the Synthesis of a Three-Dimensional Nanoporous Graphene Nanoribbon Framework and Its Gas Sorption Properties

Targeted synthesis of micro–mesoporous hybrid material derived from octaphenylsilsesquioxane building units

Triptycene-Based Microporous Poly(diaminophosphazene)

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