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    Université de Fribourg

    Bimetallic salen-based compounds and their potential applications

    Finelli, Alba ; Abram, Sarah-Luise ; Hérault, Nelly ; Crochet, Aurélien ; Fromm, Katharina M.

    In: Crystal Growth & Design, 2020, vol. 20, no. 8, p. 4945–4958

    The new bimetallic coordination compounds [LNiAg(NO3)], [LCuMn(NO3)2], [LCuCu(NO3)2], [LCuZn(NO3)2], and [{LCuBi(NO3)3}(ACN)] have been synthesized from a salen-type ligand L containing two distinct coordination sites to accommodate (different) metal ions M1 and M2. In the solid state, the formation of 1:1 compounds (LCu:M2) is always observed, but interactions between the compounds lead to ...

    Université de Fribourg

    Sequential multiple-target sensor: In3+, Fe2+, and Fe3+ discrimination by an anthracene-based probe

    Finelli, Alba ; Chabert, Valentin ; Hérault, Nelly ; Crochet, Aurélien ; Kim, Cheal ; Fromm, Katharina M.

    In: Inorganic Chemistry, 2019, vol. 58, no. 20, p. 13796–13806

    Indium is a nonphysiological toxic metal widely used in industry. While misunderstood, its toxicity is proposed to be linked to a perturbation of Fe3+ homeostasis through the binding of In3+ ions to essential iron metalloproteins such as transferrins. Therefore, the monitoring of In3+ and Fe3+ in biological environments is of prime interest for both basic research and diagnosis. Here we...

    Université de Fribourg

    Compartmentalization of alkaline-earth metals in salen-type Cu- and Ni-complexes in solution and in the solid state

    Finelli, Alba ; Hérault, Nelly ; Crochet, Aurélien ; Fromm, Katharina M.

    In: ACS Omega, 2019, vol. 4, no. 6, p. 10231–10242

    The precise arrangement of metal ions in type and number by a ligand represents an important challenge in biology as well as in materials science. The preorganization of different metal ions such as alkaline-earth and transition-metal ions is of particular interest for the design of catalysts or precursors of oxides. This study is based on a Ω- shaped salen-derived ligand comprising N2O2 and...

    Université de Fribourg

    Threading salen-type Cu- and Ni-complexes into one-dimensional coordination polymers: solution versus solid state and the size effect of the alkali metal ion

    Finelli, Alba ; Hérault, Nelly ; Crochet, Aurélien ; Fromm, and Katharina M.

    In: Crystal Growth & Design, 2018, vol. 18, no. 2, p. 1215–1226

    Compartmentalization of metal ions is crucial in biology as well as in materials science. For the synthesis of single source precursors, the preorganization of different metal ions is of particular interest for the low-temperature generation of mixed metal oxides. On the basis of a potentially Ω-shaped salen-type ligand providing an N2O2 as well as an O2O2 coordination site, mixed metal...