Sensitivity of the glass transition and melting in a metal-organic framework to ligand chemistry

The effect of substituting linkers with electron-donating moieties for part of the conventional ones on the melting and glass transition behaviours of ZIF-62 was investigated by calorimetry and X-ray diffraction. Specifically, substituting 5,6-dimethylbenzimidazole for benzimidazole in ZIF-62 increases both T-m and T-g. The structural origin of this effect was explained.

Automated summary

The study investigated the effects of substituting some linkers with electron-donating moieties for ZIF-62 on its melting and glass transition behaviors, finding that replacing part of the traditional linkers increases both the melting temperature and glass transition temperature of the material, with the structural origin of this effect explained.