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Flexible porous organic polymers constructed using C(sp3)-C(sp3) coupling reactions and their high methane-storage capacity.

ABSTRACT: Carbon-carbon coupling is a basic design principle for the synthesis of porous organic polymers, which are widely used in gas adsorption/separation, photocatalysis, energy storage, etc. However, the C(sp3)-C(sp3) coupling reaction to construct porous organic polymers remains an important yet elusive objective due to its low reactivity and unknown side reactions. Herein, we report that nickel bis(1,5-cyclooctadiene) (Ni(COD)2), which was a famous catalyst for C(sp2)-C(sp2) coupling reactions, enables highly efficient C(sp3)-C(sp3) homo-coupling reactions to construct porous linear crystalline polymers and flexible three-dimensional porous aromatic frameworks (PAFs) under mild reaction conditions. The resulting linear polymers generated with dibromomethyl arenes have good crystallinity and high melting points (T m = 286 °C) due to controllability of reaction sites. Furthermore, the PAFs (PAF-64, PAF-65 and PAF-66) stemmed from tri-/tetra-bromomethyl arenes show high surface area (S BET = 390 m2 g-1) and high methane-storage capacity (up to 313 cm3 cm-3) because of their flexible frameworks. This work sheds new light on the construction of novel porous polymers through C(sp3)-C(sp3) coupling reactions and the development of methane-storage materials.

SUBMITTER: Zhou S 

PROVIDER: S-EPMC11253196 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature

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Flexible porous organic polymers constructed using C(sp<sup>3</sup>)-C(sp<sup>3</sup>) coupling reactions and their high methane-storage capacity.

Zhou Shuang S   Qiu Tianyu T   Wang He H   Tang Boyan B   Su Yang Y   Nan Tianhao T   Dong Junchao J   Wang Zihao Z   Liu Dongtao D   Zhu Guangshan G  

Chemical science 20240607 28

Carbon-carbon coupling is a basic design principle for the synthesis of porous organic polymers, which are widely used in gas adsorption/separation, photocatalysis, energy storage, <i>etc.</i> However, the C(sp<sup>3</sup>)-C(sp<sup>3</sup>) coupling reaction to construct porous organic polymers remains an important yet elusive objective due to its low reactivity and unknown side reactions. Herein, we report that nickel bis(1,5-cyclooctadiene) (Ni(COD)<sub>2</sub>), which was a famous catalyst f  ...[more]

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