PXRD, TGA, XPS, additional structural figures, gas sorption data, dye molecules, crystallographic data, FT-IR spectra of dyes, the comparison of the maximum adsorption amounts for dyes are available in the supporting information of this article. CCDC 2086796 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/data_request/cif, or by emailing data_request@ccdc.cam.ac.uk, or by contacting The Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: +44 1223 336033.