Anionic porous polymers with tunable structures and catalytic properties

Zhao, Wuxue; Zhang, Fan; Yang, Lingyun; Bi, Shuai; Wu, Dongqing; Yao, Yefeng; Wagner, Manfred; Graf, Robert; Zhuang, Xiaodong; Feng, Xinliang

doi:10.1039/c6ta04917f

Cited by 33 publications

(23 citation statements)

References 72 publications

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“…The specific surface areas of OB‐POP‐1–4 were 669, 750, 564, and 834 m 2 g −1 . For all polymers, hysteresis was observed between the adsorption and desorption curves at relatively low pressure, probably because of the deformation and swelling of the polymer networks containing flexible vinyl linkers . The pore size of OB‐POP‐1 was less than 5 nm according to its N 2 sorption analysis and nonlocal DFT calculation (Figure S7, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Substantial Cyano‐Substituted Fully sp²‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Lan

Paasch

et al. 2017

Adv Funct Materials

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149

112

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Polymeric semiconductors are emerging as a kind of competitive photocatalysts for hydrogen evolution due to their well-tunable structures, versatile functionalization, and low-cost processibility. In this work, a series of conjugated porous polymers with substantial cyano-substituted fully sp 2 -carbon frameworks are efficiently synthesized by using electron-deficient tricyanomesitylene as a key building block to promote an organic base-catalyzed Knoevenagel condensation with various aldehyde-substituted arenes. The resulting porous polymers feature donor-acceptor structures with π-extended conjugation, rendering them with distinct semiconducting properties. They possess hierarchically porous structures, nanoscale morphologies, and intriguing wettability. These promising physical characters, finely tailorable by varying the arene units, are essentially relevant to the abundant cynao substituents over the whole frameworks. The as-prepared porous polymers exhibit excellent visible-light-driven photocatalytic activity for water-splitting hydrogen evolution with apparent quantum yield up to 2.0% at 420 nm or 1.9% at 470 nm, among the highest values yet reported for porous polymerbased photocatalysts, also representing the first example of such kinds of catalysts formed through a metal-free-catalyzed carbon-carbon coupling reaction.

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Section: Resultsmentioning

confidence: 99%

Substantial Cyano‐Substituted Fully sp²‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Lan

Paasch

et al. 2017

Adv Funct Materials

Self Cite

149

112

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“…After loading the network with cobalt cations the network proved to be very active for homocoupling reactions of Grignard magnesium aryl compounds. 212 …”

Section: Anionic Microporous Polymersmentioning

confidence: 99%

Trends and challenges for microporous polymers

et al. 2017

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“…For excellent performance, hybrid carbon materials require two crucial features: (i) adequate dispersion of transition metal nanoparticles on the carbon materials; [17, 18] and (ii) a hierarchical porous structure with a controllable micro/mesoporous size distribution [19–21] . Ionic porous polymers featuring porous scaffolds, rational heteroatom building blocks, and different ionic types have demonstrated their ability to function as ideal precursors of materials for various applications in gas storage, selective catalysis, and energy storage and conversion [22–25] . Moreover, transition metal sources can be loaded in the framework of ionic porous polymers through electrostatic interaction and subsequently confined to grow into transition metal nanoparticles with uniform distribution through hydrothermal or pyrolysis treatment [23] .…”

Section: Introductionmentioning

confidence: 99%

Self‐Assembly Approach Towards MoS₂‐Embedded Hierarchical Porous Carbons for Enhanced Electrocatalytic Hydrogen Evolution

Liu

Wang

Liu

et al. 2020

Chemistry A European J

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Transition metal‐based nanoparticle‐embedded carbon materials have received increasing attention for constructing next‐generation electrochemical catalysts for energy storage and conversion. However, designing hybrid carbon materials with controllable hierarchical micro/mesoporous structures, excellent dispersion of metal nanoparticles, and multiple heteroatom‐doping remains challenging. Here, a novel pyridinium‐containing ionic hypercrosslinked micellar frameworks (IHMFs) prepared from the core–shell unimicelle of s‐poly(tert‐butyl acrylate)‐b‐poly(4‐bromomethyl) styrene (s‐PtBA‐b‐PBMS) and linear poly(4‐vinylpyridine) were used as self‐sacrificial templates for confined growth of molybdenum disulfide (MoS2) inside cationic IHMFs through electrostatic interaction. After pyrolysis, MoS2‐anchored nitrogen‐doped porous carbons possessing tunable hierarchical micro/mesoporous structures and favorable distributions of MoS2 nanoparticles exhibited excellent electrocatalytic activity for hydrogen evolution reaction as well as small Tafel slope of 66.7 mV dec−1, low onset potential, and excellent cycling stability under acidic condition. Crucially, hierarchical micro/mesoporous structure and high surface area could boost their catalytic hydrogen evolution performance. This approach provides a novel route for preparation of micro/mesoporous hybrid carbon materials with confined transition metal nanoparticles for electrochemical energy conversion.

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Anionic porous polymers with tunable structures and catalytic properties

Abstract: A series of boron-containing conjugated polymers with hierarchical porous structures have been preparedviaSonogashira–Hagihara coupling for catalysing stoichiometric homo-coupling reactions of aryl Grignard regents with size selectivity.

Cited by 33 publications

References 72 publications

Substantial Cyano‐Substituted Fully sp²‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Substantial Cyano‐Substituted Fully sp²‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Trends and challenges for microporous polymers

Self‐Assembly Approach Towards MoS₂‐Embedded Hierarchical Porous Carbons for Enhanced Electrocatalytic Hydrogen Evolution

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Anionic porous polymers with tunable structures and catalytic properties

Abstract: A series of boron-containing conjugated polymers with hierarchical porous structures have been preparedviaSonogashira–Hagihara coupling for catalysing stoichiometric homo-coupling reactions of aryl Grignard regents with size selectivity.

Cited by 33 publications

References 72 publications

Substantial Cyano‐Substituted Fully sp2‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Substantial Cyano‐Substituted Fully sp2‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Trends and challenges for microporous polymers

Self‐Assembly Approach Towards MoS2‐Embedded Hierarchical Porous Carbons for Enhanced Electrocatalytic Hydrogen Evolution

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Product

Resources

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Substantial Cyano‐Substituted Fully sp²‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Substantial Cyano‐Substituted Fully sp²‐Carbon‐Linked Framework: Metal‐Free Approach and Visible‐Light‐Driven Hydrogen Evolution

Self‐Assembly Approach Towards MoS₂‐Embedded Hierarchical Porous Carbons for Enhanced Electrocatalytic Hydrogen Evolution