Sol-gel processing of a covalent organic framework for the generation of hierarchically porous monolithic adsorbents by Carrington, ME, Rampal, N, Madden, DG, O’Nolan, D, Casati, NPM, Divitini, G, Martín-Illán, JÁ, Tricarico, M, Cepitis, R, Çamur, C, Curtin, T, Silvestre-Albero, J, Tan, J-C, Zamora, F, Taraskin, S, Chapman, KW, Fairen-Jimenez, D