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  • Catalytically-active porous assembly with dynamic pulsating motion for efficient exchange of products and reagents
  • 来源:黄哲钢教授个人网站 2020-07-02
  • Despite recent advances in the use of porous materials as efficient heterogeneous catalysts

    which operate through effectively trapping reagents in a well-defined space, continuously

    uptaking reagents to substitute products in the cavity for efficient product turnover still

    remains challenging. Here, a porous catalyst is endowed with ‘breathing’ characteristics by

    thermal stimulus, which can enable the efficient exchange of reagents and products through

    reversible stacking from inflated aromatic hexamers to contracted trimeric macrocycles. The

    contracted super-hydrophobic tubular interior with pyridine environment exhibits catalytic

    activity towards a nucleophilic aromatic substitution reaction by promoting interactions

    between concentrated reagents and active sites. Subsequent expansion facilitates the

    exchange of products and reagents, which ensures the next reaction. The strategy of

    mesoporous modification with inflatable transition may provide a new insight for construction

    of dynamic catalysts.








  • [来源:中国聚合物网]
  • 了解更多请进入: 黄哲钢教授个人网站
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