fig1

Figure 1. (A) Schematic illustration of the synthesis of OCF-1 through the Sonogashira reaction^[36]. Copyright 2011, American Chemical Society; (B) Schematic illustration of the synthesis of OCF-5 through the Ullmann reaction^[40]. Copyright 2018, Wiley-VCH; (C) Schematic illustration of the synthesis of OCF-6 and OCF-7 through the Ullmann reaction^[41]. Copyright 2021, American Chemical Society; (D) Schematic illustration of the synthesis of OCF-8, OCF-9, and OCF-10 through the nucleophilic substitution reaction^[42]. Copyright 2015, American Chemical Society. OCF: Organic cage-based framework.