previous methodology (Fig. ). agZIF-UC-7 was selected because of its relatively low Tg (273 °C), which lowers the working temperature (Tw) for composite synthesis where Tw must exceed Tg of the glass. Specifically, we disperse UiO-66, [Zr6O4(OH)4 (BDC)6 ⋅ xH2O] (UiO = Universitetet i Oslo; BDC = 1,4-benzene dicarboxylic acid) into the glass matrix; UiO-66 was selected because of its high surface area (1050 m 2 g -1 ) and thermal stability (stable up to 500 °C). ZIF-UC-7 was synthesised solvothermally following previous synthetic procedures to obtain orange crystals (Fig. ) and powder X-ray diffraction (PXRD) confirm its crystalline structure (Fig. , Table ). CHN analysis and acid digested solution state H NMR spectroscopy confirm the [Zn(Im)1.75(pur)0.25] formula, in agreement with the reported composition (Table , Fig. ). Thermogravimetric analysis (TGA) of the crystalline ZIF-UC-7 shows a thermal decomposition temperature (Td) of 521 °C (Fig. ). Differential scanning calorimetry (DSC) was used to confirm the melting temperature (Tm) and Tg (Fig. ). The first DSC upscan of crystalline ZIF-UC-7 shows a Tm of 336.7 °C and the second DSC scan shows a Tg of 273.1 °C, in line with the reported value. agZIF-UC-7 was prepared by melt-quenching; the PXRD pattern shows no Bragg peaks, confirming its amorphous nature (Fig. and Fig. ). DSC analysis on agZIF-UC-7 shows Tgs of 277 and 278 °C in the first and second upscans respectively (Fig. ). TGA shows a Td of ~507 °C (Fig. ). Fouriertransform infrared spectroscopy (FTIR) and 1 H NMR spectroscopy of acid-digested agZIF-UC-7 and ZIF-UC-7 solutions confirm that the chemical features of ZIF-UC-7 were preserved after melt-quenching (Fig. ).