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. 2024 May 13;63(20):e202403062.
doi: 10.1002/anie.202403062. Epub 2024 Mar 15.

A Conjugated Phenylene Nanocage with a Guest-Adaptive Deformable Cavity

Jingxuan Yang  1   2 , Liang-Liang Mao  1 , Hongyan Xiao  3 , Guohui Zhang  4 , Shaoguang Zhang  4 , Lei Kang  5   2 , Zheshuai Lin  5   2 , Chen-Ho Tung  1   2 , Li-Zhu Wu  1   2 , Huan Cong  1   2
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A Conjugated Phenylene Nanocage with a Guest-Adaptive Deformable Cavity

Jingxuan Yang et al. Angew Chem Int Ed Engl. .

Abstract

The highly strained, phenylene-derived organic cages are typically regarded as very rigid entities, yet their deformation potential and supramolecular properties remain underexplored. Herein, we report a pliable conjugated phenylene nanocage by synergistically merging rigid and flexible building blocks. The anisotropic cage molecule contains branched phenylene chains capped by a calix[6]arene moiety, the delicate conformational changes of which endow the cage with a remarkably deformable cavity. When complexing with fullerene guests, the cage showcases excellent guest-adaptivity, with its cavity volume capable of swelling by as much as 85 %.

Keywords: calixarenes; guest-adaptivity; host–guest systems; oligoparaphenylenes; organic cages.

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