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Fine-tuning optimal porous coordination polymers using functional alkyl groups for CH4 purification

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Abstract

Nano-porous coordination polymers (nano-PCPs), as a new class of crystalline material, have become a lucrative topic in coordination chemistry due to the facile tunability of their functional pore environments. However, elucidating the pathways for the rational design and preparation of nano-PCPs with various integrated properties for feasible gas separation remains a great challenge. Here, we demonstrate a new route to achieve nano-PCPs with an integrated pore system and physical properties using a reticular chemistry strategy. By optimizing the position and length of the shortest two alkyl groups in the channels, unprecedented phenomena of improved surface area, gas uptake, gas selectivity, thermal stability and chemical stability were observed in the PCPs, especially in NTU-14, the structure with a pendant ethyl group. Furthermore, the high performance of adsorption- and membrane-based separation makes NTU-14 a promising medium for CH4 purification from a mixture at room temperature.

Graphical abstract: Fine-tuning optimal porous coordination polymers using functional alkyl groups for CH4 purification

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Publication details

The article was received on 30 Mar 2017, accepted on 02 Jul 2017 and first published on 05 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA02760E
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Fine-tuning optimal porous coordination polymers using functional alkyl groups for CH4 purification

    F. Cheng, Q. Li, J. Duan, N. Hosono, S. Noro, R. Krishna, H. Lyu, S. Kusaka, W. Jin and S. Kitagawa, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA02760E

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