Hierarchically Porous Poly(ionic liquid) – Organic Cage Composite Membrane for Efficient Iodine Capture

Zhao, Xue-Jing; Liu, Sihua; Sun, Jian‐Ke

doi:10.1002/chem.202201199

Cited by 5 publications

(2 citation statements)

References 73 publications

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“…These thermal-responsive access and pores in SCMP are expected to achieve effective iodine capture and locking (Figure C). In addition, the pore distribution (Figure S5) showed that there was a hierarchical pore structure (micropore, mesopore, and macropore) in SCMP, which is conducive to the diffusion of gaseous molecules in the material …”

Section: Resultsmentioning

confidence: 99%

Thermal-Responsive Conjugated Micropore Polymers for Smart Capture of Volatile Iodine

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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The capture of radioiodine is crucial for nuclear security and environmental protection due to its volatility and superior environmental fluidity. Herein, we propose a strategy of “temperature-dependent gate” based on a swellable conjugated microporous polymer (SCMP) to significantly improve the capture of volatile iodine. The SCMP is constructed via the Buchwald–Hartwig coupling reaction of building monomers containing amines. It possesses a hierarchical pore structure with restricted pores, which can be “opened” and “closed” by changing the temperature. By virtue of the thermal-responsive pore structure, it reaches adsorption equilibrium for iodine in 2 h with a capacity of 4.3 g g–1 at 90 °C and retains 92.8% adsorbed iodine at room temperature. The SCMP also exhibits a high adsorption capacity up to 3.5 g g–1 for dissolved iodine within 10 min, as well as good radiation resistance and high selectivity for iodine against moisture, VOCs, and HNO3 vapor. The mechanism is clarified for effective iodine capture and caging based on the relationship between temperature and the pore structure. This work develops not only a strategy to enhance the capture of gaseous and dissolved iodine but also a new adsorption mechanism for iodine capture, which can be extended to the separation and caging of resources or volatile pollutants in other fields.

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Section: Resultsmentioning

confidence: 99%

Thermal-Responsive Conjugated Micropore Polymers for Smart Capture of Volatile Iodine

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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“…Aiming to elucidate the adsorption mechanism, various spectral studies were performed, which demonstrated the excellent ability for iodine capture originating from the strong interaction between adsorbed iodine species and nitrogen-rich groups. During the same year, the group utilized POC-10 to synthesize four additional cage-based COFs [87] and developed them as effective adsorbents for capturing iodine vapor.…”

Section: Gas Phase Adsorption and Separationmentioning

confidence: 99%

Organic cage-based frameworks: from synthesis to applications

Cui,

Yang,

Sun

2024

Chem Synth

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The investigation of organic cage-based frameworks (OCFs) has attracted increasing attention over the past decade due to their versatile synthetic methods and broad property range resulting from the unique combination of porous organic cages (POCs) with diverse framework materials, including porous organic polymers (POPs), metal-organic frameworks (MOFs), and supramolecular organic frameworks (SOFs). Nevertheless, a comprehensive summary of the research advancements in OCFs remains elusive in the literature. This review addresses this gap by providing a detailed overview of the development of OCF-based materials from both synthetic and applicative perspectives. The discussion begins with systematically exploring design principles and common strategies for elaborating OCFs, achieved by rational selection of bond-forming routes suitable for various POC monomers, including covalent bonds, coordination bonds, and supramolecular interactions. Subsequently, the review highlights the functional attributes derived from the distinctive structural features of OCFs, showcasing their task-specific applications in adsorption/separation, catalysis, membrane technology, and other fields. Lastly, the article summarizes the opportunities and challenges anticipated as the exploration of the OCF family continues to advance in material science.

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Conjugated Poly(ionic liquid)‐Based Nanoporous Membrane for Rapid Moisture Response

Zhang

Tan

et al. 2023

Macromol. Rapid Commun.

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Stimuli‐responsive nanoporous materials represent a newly emerging category of functional materials, for which instant and significant response behavior is strongly demanded but still challenging. Herein, a new kind of conjugated poly(ionic liquid)s (PILs) synthesized via a simple one‐pot spontaneous nucleophilic substitution and polymerization between 4,4'‐vinylenedipyridine and propargyl bromide is reported. A nanoporous membrane actuator is further developed via ionic complexation between the current PIL and trimesic acid. The actuator carries a gradient density in the hydrophobicity content along the membrane cross‐section, which results in a fast response to moisture.

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Hierarchically Porous Poly(ionic liquid) – Organic Cage Composite Membrane for Efficient Iodine Capture

Cited by 5 publications

References 73 publications

Thermal-Responsive Conjugated Micropore Polymers for Smart Capture of Volatile Iodine

Thermal-Responsive Conjugated Micropore Polymers for Smart Capture of Volatile Iodine

Organic cage-based frameworks: from synthesis to applications

Conjugated Poly(ionic liquid)‐Based Nanoporous Membrane for Rapid Moisture Response

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