fig17
![Organic cage-based frameworks: from synthesis to applications](https://image.oaes.cc/74e79632-7081-4c1b-98a9-2b93b3d8c8af/cs4001.fig.17.jpg)
Figure 17. (A) Schematic illustration of the synthesis of OCF-49 by mixing POC-14 and Nafion; (B) PXRD patterns, (C) water-retention capacity, and (D) proton-transfer ability of OCF-49 as the mass fraction of the POCs increased from 3 to 7 wt%. (A-D) were reproduced with permission[100]. Copyright 2018, American Chemical Society. OCF: Organic cage-based framework; POC: porous organic cage; PXRD: powder X-ray diffraction.