Synthesis of conjugated microporous polymers for gas storage and selective adsorption

Shi, Qian; Sun, Hanxue; Yang, Ruixia; Zhu, Zhaoqi; Liang, Weidong; Tan, Dazhi; Yang, Baoping; Deng, Wei

doi:10.1007/s10853-015-9191-x

Cited by 23 publications

(9 citation statements)

References 44 publications

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“…The TGA curves (Figure 2c) show that HBPBA-D and TBBPA-D were stable up to 345–372 °C prior to decomposition. The residual weight of the two materials at 800 °C accounted for 67–72 wt % of their original weight, which is superior to many adamantane-based microporous polymers [26,27]. All the products were insoluble in strong acidic/basic solutions as well as many organic solvents such as THF, DMF, chloroform, and acetone.…”

Section: Resultsmentioning

confidence: 99%

Adamantane-Based Micro- and Ultra-Microporous Frameworks for Efficient Small Gas and Toxic Organic Vapor Adsorption

et al. 2019

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Microporous organic polymers and related porous materials have been applied in a wide range of practical applications such as adsorption, catalysis, adsorption, and sensing fields. However, some limitations, like wide pore size distribution, may limit their further applications, especially for adsorption. Here, micro- and ultra-microporous frameworks (HBPBA-D and TBBPA-D) were designed and synthesized via Sonogashira–Hagihara coupling of six/eight-arm bromophenyl adamantane-based “knots” and alkynes-type “rod” monomers. The BET surface area and pore size distribution of these frameworks were in the region of 395–488 m2 g−1, 0.9–1.1 and 0.42 nm, respectively. The as-made prepared frameworks also showed good chemical ability and high thermal stability up to 350 °C, and at 800 °C only 30% mass loss was observed. Their adsorption capacities for small gas molecules such as CO2 and CH4 was 8.9–9.0 wt % and 1.43–1.63 wt % at 273 K/1 bar, and for the toxic organic vapors n-hexane and benzene, 104–172 mg g−1 and 144–272 mg g−1 at 298 K/0.8 bar, respectively. These are comparable to many porous polymers with higher BET specific surface areas or after functionalization. These properties make the resulting frameworks efficient absorbent alternatives for small gas or toxic vapor capture, especially in harsh environments.

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Section: Resultsmentioning

confidence: 99%

Adamantane-Based Micro- and Ultra-Microporous Frameworks for Efficient Small Gas and Toxic Organic Vapor Adsorption

et al. 2019

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“…The CO 2 ‐uptake capacity was investigated by volumetric method under low pressure at 273 and 298 K, as seen in Figure c,d. The maximum CO 2 uptake of BQCMP‐1 is 68.1 mg g −1 (1.55 mmol g −1 ) at 273 K and 46.7 mg g −1 (1.06 mmol g −1 ) at 298 K, nearly to that of tube‐liked CMPs and BCMPs (66.4–67.3 mg g −1 ) . DQCMP‐1 has a CO 2 uptake with 48.1 mg g −1 (1.09 mmol g −1 ) at 273 K and 37.7 mg g −1 (0.86 mmol g −1 ) at 298 K, due to its lower BET surface area and microporous surface area.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Properties of Conjugated Microporous Polymers Bearing Pyrazine Moieties with Macroscopically Porous 3D Networks Structures

Zang

Zhu

et al. 2016

Macro Materials & Eng

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The N‐containing conjugated microporous polymers (CMPs) are synthesized by 2,5‐dibromopyrazine or its isomeric pyridazine monomer and 1,3,5‐triethynylbenzene via the Pd(0)/Cu(I)‐catalyzed Sonogashira–Hagihara cross‐coupling polycondensation. The resulting CMPs exhibit diverse porosity and morphology, which reveals macroscopically porous 3D networks for BQCMP‐1, agglomerated and amorphous structure for DQCMP‐1, arising from the variation of isomeric monomer. In addition, metal ions adsorption capacity of Zn(II), Cr(VI), Ni(II) have been investigated due to the good porosity of CMPs. Compared with Zn(II) and Cr(VI), the adsorption capacity of Ni(II) for BQCMP‐1 and DQCMP‐1 is maximal, which is 272 mg g−1 and 559 mg g−1. Our study may provide a useful guidance to manipulate CMPs by varying the constitution of isomeric monomer.

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“…PAF powders synthesized in previous reports using these building blocks are reported as BCMP-2. 49 One conceptual difference between PAF-1 and BCMP-2 is that PAF-1 is based on a homocoupling of a single reactant whereas BCMP-2 is based on the heterocoupling of two distinct reactants. Nonetheless, our approach for the synthesis of uniform homocoupled films easily accommodated the synthesis of heterocoupled 3D PAFs (Figures S8 and S9).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

All-Carbon-Linked Continuous Three-Dimensional Porous Aromatic Framework Films with Nanometer-Precise Controllable Thickness

Ratsch

Yang

et al. 2020

J. Am. Chem. Soc.

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Inherently porous materials that are chemically and structurally robust are challenging to construct. Conventionally, dynamic chemistry is thought to be needed for the formation of uniform porous organic frameworks, but dynamic bonds can limit the stability of these materials. For this reason, all-carbon-linked frameworks are expected to exhibit higher stability performance than more traditional porous frameworks. However, the limited reversibility of carbon−carbon bondforming reactions has restricted the exploration of these materials. In particular, the challenges associated with producing uniform thin films of all-carbon-linked frameworks has inhibited the study of these materials in applications where well-defined films are required. Here, we synthesize continuous and homogeneous films of two different all-carbon-linked three-dimensional porous aromatic frameworks with nanometer-precision thickness (PAF-1 and BCMP-2). This was accomplished by kinetically promoting surface reactivity while suppressing homogeneous nucleation. Through connection of the PAF film to a gold substrate via a self-assembled monolayer and use of flow conditions to continually introduce monomers, smooth and continuous PAF films can be grown with controlled thickness. This strategy allows traditional transition metal mediated carbon−carbon cross-coupling reactions to form porous, organic thin films. We expect that the chemical principles uncovered in this study will enable the synthesis of a variety of chemically and structurally diverse carbon− carbon-linked frameworks as high-quality films, which are inaccessible by conventional methods.

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Synthesis of conjugated microporous polymers for gas storage and selective adsorption

Cited by 23 publications

References 44 publications

Adamantane-Based Micro- and Ultra-Microporous Frameworks for Efficient Small Gas and Toxic Organic Vapor Adsorption

Adamantane-Based Micro- and Ultra-Microporous Frameworks for Efficient Small Gas and Toxic Organic Vapor Adsorption

Synthesis and Properties of Conjugated Microporous Polymers Bearing Pyrazine Moieties with Macroscopically Porous 3D Networks Structures

All-Carbon-Linked Continuous Three-Dimensional Porous Aromatic Framework Films with Nanometer-Precise Controllable Thickness

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