Example 4
M21, M32, M43 and M55 were synthesized according to procedure reported in the literature [36-39]. M1 and other starting reagents were purchased from Aldrich and Alfa-Aesar, and used as received without further purification. Thermogravimetric analysis (TGA) data were collected on Mettle-Toledo TGA-DSC-1 with heating rate 10° C./min from 30° C. to 900° C. under N2 atmosphere. Solid state nuclear magnetic resonance (NMR) data were collected on Bruker Advance-400 Solids NMR spectrometer. N2 adsorption data were collected on a Micrometrics ASAP 2020 surface area and pore size analyzer.