TY  - JOUR
AU  - Velazquez Garcia, Jose
AU  - Del los Santos Valladares, Luis
AU  - Barnes, Crispin H. W.
AU  - König, Sandra
AU  - Froeba, Michael
AU  - Baran, Volodymyr
AU  - Knjo, Bassima
AU  - Khademhir, Faegheh
AU  - Ekineken, Aliyenur
AU  - Hain, Fabienne
AU  - Carstensen, Evke
AU  - Spillner, Tom
AU  - Asprilla Herrera, Lina Maria
AU  - Lukaszczyk, Weronika
AU  - Techert, Simone
TI  - Neutral and Ionic Co(II) Metal-Organic Frameworks with 2-Methylimidazole and Trimesate: Design and Evaluation for Molecule Encapsulation and Slow Release
JO  - Dalton transactions
VL  - 54
SN  - 0300-9246
CY  - London
PB  - Soc.
M1  - PUBDB-2025-00270
SP  - 4449 - 4460
PY  - 2025
AB  - Two Co(II) mixed-ligand metal-organic frameworks (MOFs) based on 2-methylimidazole and trimesate were synthesised at room temperature. The structure and properties of the two MOFs, named material Deutsches Elektronen Synchrotron-1 and -2 (mDESY-1 and mDESY-2), were verified by single crystal X-ray diffraction (SCXRD), powder X-ray diffraction (PXRD), SQUID magnetic susceptibility and N2 adsorption. The structural analysis indicates that mDESY-1 is a 3D ionic framework with 2-methyl-1H-imidazol-3-ium counterions residing in its pores, while mDESY-2 is a 2D neutral framework isostructural to ITH-1, with water as a co-crystallising solvent. PXRD data demonstrates that mDESY-1 exhibits better crystallinity than mDESY-2. Magnetic measurements indicate that both MOFs are paramagnetic with a weak ferromagnetic transition above room temperature. Although both structures suggest the presence of voids, N2 adsorption data confirms that these voids are not accessible in either MOF. Nevertheless, mDESY-1 was capable of encapsulating azobenzene during synthesis, which was observed via SCXRD. The encapsulated molecules were then slowly released in ethanol, with a release of up to 30mg of azobenzene per g of MOF in a period of 60 days.
LB  - PUB:(DE-HGF)16
C6  - pmid:39812590
UR  - <Go to ISI:>//WOS:001398581300001
DO  - DOI:10.1039/D4DT02679A
UR  - https://bib-pubdb1.desy.de/record/622232
ER  -