Materials
All the materials were purchased from Sigma Aldrich unless otherwise
stated. For the synthesis of different variations of zeolitic
imidazolate frameworks (ZIF-62) the following chemicals were used: zinc
nitrate hexahydrate
(Zn(NO3)2·6H2O),
imidazole (Im), benzimidazole (bIm), All these chemicals were used as is
without further purification. The following solvents were used either
for chemical synthesis, dispersing synthesised particles, or washing:
methanol and N, N-dimethylformamide (DMF). All these solvents were used
as is without further purification. Polymers for the synthesis of mixed
matrix membranes were purchased and used directly from suppliers.
6FDA-DAM ((4,4’-Hexafluoroisopropylidene) diphthalic dianhydride (6FDA)
and 2,4,6-trimethyl-1,3-diaminobenzene (DAM)) is a type of polyimide
that was obtained from Akron Polymer Sytems (USA) at a molecular weight
of ~370k.