Stabilization of the hindered urea bond through de-tert-butylation. 2021

Yingfeng Yang, and Hanze Ying, and Yunchao Jia, and Yingying Chen, and Jianjun Cheng
Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. jianjunc@illinois.edu.

We report the discovery of an acid-assisted de-tert-butylation reaction that can instantly "turn off" the dynamicity of hindered urea bonds (HUBs) and thus broaden their applications. The reaction is demonstrated to be widely applicable to different hindered urea substrates, leading to improved chemical stabilities and mechanical properties of HUB-containing materials.

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