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[Prof. Kimoon Kim] Gigantic Porphyrinic Cages

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작성자 최고관리자 댓글 조회 작성일 20-10-28 17:08

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Gigantic Porphyrinic Cages

Jaehyoung Koo, Ikjin Kim, Younghoon Kim, Dasol Cho, In-Chul Hwang, Rahul Dev Mukhopadhyay, Hayoung Song, Young Ho Ko, Avinash Dhamija, Hochan Lee, Wooseup Hwang, Seungha Kim, Mu-Hyun Baik*, and Kimoon Kim*

 Due to the existing challenges in the syntheses of covalently-linked large organic cages, the potential benefits of such gigantic structures have comparatively been less explored. Here we present a one-pot, template-free strategy to construct porphyrin-based gigantic organic cages P12L24, built with 12 square-shaped porphyrins (P) and 24 bent linkers (L). Single crystal X-ray analysis of P12L24 revealed a cuboctahedron structure with a diameter of ~5.3 nm reminiscent of the COPII protein with a cuboctahedral geometry. To the best of our knowledge, it represents the largest, pure organic synthetic cage reported so far. By virtue of its large voids facilitating mass transport of substrates, 3a efficiently catalyzes the photooxidation of dihydroxynaphthalene derivatives in a heterogeneous setting, corroborating the benefits of these structures. Additionally, we demonstrate the insertion of a linear guest molecule into Zn-metallated cage Zn-3b in solution, which may facilitate the synthesis of multivariate gigantic cages in the future.   https://www.cell.com/chem/fulltext/S2451-9294(20)30523-4  

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