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. 2018 Sep 21;4(9):eaau1698. doi: 10.1126/sciadv.aau1698

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Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — (A and B) Diffuse reflectance infrared Fourier transform (DRIFT) and ¹³C CP/MAS spectra of films. (C and D) N₂ and CO₂ adsorption (solid symbols) and desorption (open symbols) isotherms of the films at 77 and 298 K, respectively. The samples were prepared under the following conditions: 1.5 wt % BTA and 0.5 wt % TFB for 60 min (see details in Materials and Methods).