A Nanosized Molybdenum Oxide Wheel with a Unique Electronic‐Necklace Structure: STM Study with Submolecular Resolution

Abstract

Immer zu zweit: Rastertunnelmikroskopie/‐spektroskopie (STM/STS) ergibt für den riesigen radförmigen Mo154‐Cluster eine einzigartige Lokalisierung der Zustände in jedem der 14 identischen Kompartimente seiner halskettenartigen Struktur (siehe Bild). Jedes Kompartiment enthält zwei delokalisierte Elektronen. Damit unterscheidet sich dieses System von konventionellen Quantenpunkten mit vollständig freien Elektronen oder exzitonischen Zuständen.

An Unstable Paramagnetic Isopolyoxomolybdate Intermediate Non‐Homogeneously Reduced at Different Sites and Trapped in a Host Based on Chemical Adaptability

“…Apart from the presence of two different types of paramagnetic Mo V groups/centers, there is another interesting result, namely that each of the two {Mo 5 O 6 } compartments (Figure 1 and Figure S1) acts as electronic sink for two spin‐coupled 4d electrons, comparable to the scenario of the 14 corresponding compartments in the discrete diamagnetic {Mo 154 }‐type wheel 4. 5a,b (Note: the environments of the compartments are different in both cases causing small changes in the electronic structure.) The Mo V centers have been unambiguously identified on the basis of bond valence sum calculations, DFT calculations, and EPR spectra (see Tables 1 and 2, Figures 1 and 3, and Figure S4). …”

An integrated giant polyoxometalate complex for photothermally enhanced catalytic oxidation

“…Although the {Mo 154 } cluster was pointed out to have unusual potentials (41)(42)(43), the detailed applications are still under development due to the unsatisfied stability. A rapid elimination of coordination of water molecules made the {Mo 154 } cluster unstable.…”

Synergistically enhanced photothermal transition of a polyoxometalate/peptide assembly improved the antibiofilm and antibacterial activities

“…18,19 They have been used as antibacterial 20 and antiviral agents, 21 magnetic contrast agents, 22 and even protein inhibitors. 23 Recently, Mo-containing POMs showed particular interesting transitions of intervalence charge transfer (IVCT) between the contained metal ions, 24 endowing them with promising photothermal conversion ability and enabling them to be efficient PTT agents. [25][26][27] Particularly, the giant big wheel Mo 154 , with a well-defined, wheel-shaped and elegant structure, exhibited a powerful efficiency of photothermal conversion (30.9%).…”