VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • The effect of the solvent on the dimensionality of the Mg-MOF framework
    Rangus, Mojca, 1978- ...
    MOF materials have been growing increasingly popular because of their vast potential in applications. In an attempt to synthesise new structures, the emphasis was also put on the variation of the ... solvents. Previous study of the influence of solvent on the structure and dimensionality has shown that the solvent can play an important role in the structure formation. We used 1H, 13C and 25Mg liquid and solid-state NMR spectroscopy to observe the framework formation of four new magnesium tri carboxylates. The solvent plays an important role in the dimensionality of the system and different H20:EtOH ratios result in OD, 1D, 2D or 3D phases. By NMR we were able to observe the assembly of individual building blocks into coordination polymers during the synthesis procedure. We determined that the crucial difference in the framework formation takes place already in the initial mixture of the reagents. 1,3,5-benzenetricarboxylic acid reacts with Mg ionsand forms an unordered structure that closely resembles the final crystalline product. By 25Mg NMR spectroscopy we determined that interaction of magnesium ions with the solvent is very important in determining the dimensionality because the same magnesium complexes that are present in the final compounds are already formed in the solution.
    Vrsta gradiva - prispevek na konferenci
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 4820506