Nitrogen-rich porous organic cages with high acetylene storage and separation performance

Feng, Lijuan; Xie, Yifei; Wang, Wenjing; Su, Kongzhao; Yuan, Daqiang

doi:10.1039/d3ta04154a

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta04154a

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Nitrogen-rich porous organic cages with high acetylene storage and separation performance

Lijuan Feng,

Yifei Xie,

Wenjing Wang

et al.

Abstract: Searching for porous materials that can safely store and efficiently separate acetylene (C2H2), a commonly used petrochemical feedstock with highly explosive properties, is a pressing and significant task. Nitrogen-rich porous...

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Cited by 8 publications

References 60 publications

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Porous Organic Cage as an Efficient Platform for Industrial Radioactive Iodine Capture

Liu,

Zhang,

Shui

et al. 2024

Angewandte Chemie

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Herein, we firstly develop porous organic cage (POC) as an efficient platform for highly effective radioactive iodine capture under industrial operating conditions (typically ≥ 150 °C, ≤ 150 ppmv of I2). Due to the highly dispersed and readily accessible binding sites as well as sufficient accommodating space, the constructed NKPOC‐DT‐(I‐)Me (NKPOC = Nankai porous organic cage) demonstrates a record‐high I2 uptake capacity of 48.35 wt% and extraordinary adsorption capacity of unit ionic site (~1.62) at 150 °C and 150 ppmv of I2. The I2 capacity is 3.5, 1.6, and 1.3 times higher than industrial silver‐based adsorbents Ag@MOR and benchmark materials of TGDM and 4F‐iCOF‐TpBpy‐I‐ under the same conditions. Furthermore, NKPOC‐DT‐(I‐)Me exhibits remarkable adsorption kinetics (k1 = 0.013 min−1), which is 1.2 and 1.6 times higher than TGDM and 4F‐iCOF‐TpBpy‐I‐ under the identical conditions. NKPOC‐DT‐(I‐)Me thus sets a new benchmark for industrial radioactive I2 adsorbents. This work not only provides a new insight for effectively enhancing the adsorption capacity of unit functional sites, but also advances POC as an efficient platform for radioiodine capture in industry.

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Porous Organic Cage as an Efficient Platform for Industrial Radioactive Iodine Capture

Liu,

Zhang,

Shui

et al. 2024

Angewandte Chemie

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Bioinspired “Intermolecular Pocket” in Soft Molecular Crystal of Porous Organic Cage Exhibiting Reversible Guest Recognition

Zhang,

Lei,

et al. 2024

Angewandte Chemie

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Porous Organic Cages (POCs) have gathered a lot of attention in sorts of fields. Previous studies often focused on the functionalization of their intrinsic porosity, while the utilization of the extrinsic porosity has been seldom reported. To date, the rational construction of functionalized extrinsic porosity in POCs is a serious challenge, which still relies on trial and error. Inspired by hydrophobic proteins, in the contribution, a POC (namely NKPOC‐DS) is obtained with hydrophobic “intermolecular pocket” as extrinsic porosity constructed through the assembly of disulfide bonds with hydrophobic groups, facilitating strong supramolecular interactions as confirmed by Electrostatic Potential (ESP) maps and single‐crystal X‐ray diffraction analysis. Notably, NKPOC‐DS exhibits a unique C2H6‐selective "breathing behaviour" due to the presence of softness in its extrinsic porosity, which does not extend to other gases such as C2H4, CH4, CO2, N2, and H2. Such specific recognition of C2H6 thus provides NKPOC‐DS with the ability to preferentially adsorb C2H6 from a C2H6/C2H4 mixture. The innovative approach of biomimicry in the design of functional POCs provides new insights into manipulating the packing of cages, paving the way for potential applications in guest recognition and adsorption separations.

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Porous Organic Cage as an Efficient Platform for Industrial Radioactive Iodine Capture

Liu,

Zhang,

Shui

et al. 2024

Angew Chem Int Ed

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Nitrogen-rich porous organic cages with high acetylene storage and separation performance

Abstract: Searching for porous materials that can safely store and efficiently separate acetylene (C2H2), a commonly used petrochemical feedstock with highly explosive properties, is a pressing and significant task. Nitrogen-rich porous...

Cited by 8 publications

References 60 publications

Porous Organic Cage as an Efficient Platform for Industrial Radioactive Iodine Capture

Porous Organic Cage as an Efficient Platform for Industrial Radioactive Iodine Capture

Bioinspired “Intermolecular Pocket” in Soft Molecular Crystal of Porous Organic Cage Exhibiting Reversible Guest Recognition

Porous Organic Cage as an Efficient Platform for Industrial Radioactive Iodine Capture

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