The structure and thermal response characteristics of the separate inorganic glass and agZIF-62 were confirmed by PXRD, FTIR, TGA and DSC (Figure ). The blends were synthesised according to the schematic in Figure . Initially, powders of both glasses were ballmilled to produce a physical mixture before pelletisation and heating to 400 °C. This working temperature (Tw) exceeded the Tgs of the agZIF-62 (Tg = 334 °C) and the inorganic glass, enabling both glasses to enter a relatively low viscosity regime to facilitate liquid phase mixing before cooling to room temperature.