Extended Data Fig. 3: Porosity characterization of the four different nanocrystals.
From: H-bonded organic frameworks as ultrasound-programmable delivery platform

a, Single-component sorption isotherms of nitrogen at 77 K of HOF-TATB, indicating the framework flexibility. b, Single-component sorption isotherms of CO2 at 195 K of HOF-BTB (no nitrogen adsorption is observed at 77 K), indicating framework flexibility. c, Single-component sorption isotherms of nitrogen at 77 K of HOF-101. d, Single-component sorption isotherms of nitrogen at 77 K of HOF-102. n = 3 independent experiments for each sample.