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   https://doi.org/10.1021/acs.chemmater.8b02749  

   Devlin, Kasey P.; Kazem, Nasrin; Zaikina, Julia V.; Cooley, Joya A.; Badger, Jackson R.; Fettinger, James C.; Taufour, Valentin; Kauzlarich, Susan M. (September 2018, Chemistry of Materials)
2. Discovery of n-Type Zintl Phases RbAlSb ₄ , RbGaSb ₄ , CsAlSb ₄ , and CsGaSb ₄

   https://doi.org/10.1021/acsaem.0c00048  

   Ortiz, Brenden R.; Gorai, Prashun; Braden, Tara; Bensen, Erik A.; Wilson, Stephen D.; Stevanović, Vladan; Toberer, Eric S. (March 2020, ACS Applied Energy Materials)
3. Magnetism and Thermoelectric Properties of the Zintl Semiconductor: Eu ₂₁ Zn ₄ As ₁₈

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4. Catalytic, Spectroscopic, and Theoretical Studies of Fe ₄ S ₄ -Based Coordination Polymers as Heterogenous Coupled Proton–Electron Transfer Mediators for Electrocatalysis

   https://doi.org/10.1021/jacs.4c03726  

   Jiang, Ningxin; Darù, Andrea; Kunstelj, Špela; Vitillo, Jenny G; Czaikowski, Maia E; Filatov, Alexander S; Wuttig, Anna; Gagliardi, Laura; Anderson, John S (May 2024, Journal of the American Chemical Society)

   Iron–sulfur clusters play essential roles in biological systems, and thus synthetic [Fe4S4] clusters have been an area of active research. Recent studies have demonstrated that soluble [Fe4S4] clusters can serve as net H atom transfer mediators, improving the activity and selectivity of a homogeneous Mn CO2 reduction catalyst. Here, we demonstrate that incorporating these [Fe4S4] clusters into a coordination polymer enables heterogeneous H atom transfer from an electrode surface to a Mn complex dissolved in solution. A previously reported solution-processable Fe4S4-based coordination polymer was successfully deposited on the surfaces of different electrodes. The coated electrodes serve as H atom transfer mediators to a soluble Mn CO2 reduction catalyst displaying good product selectivity for formic acid. Furthermore, these electrodes are recyclable with a minimal decrease in activity after multiple catalytic cycles. The heterogenization of the mediator also enables the characterization of solution-phase and electrode surface species separately. Surface enhanced infrared absorption spectroscopy (SEIRAS) reveals spectroscopic signatures for an in situ generated active Mn–H species, providing a more complete mechanistic picture for this system. The active species, reaction mechanism, and the protonation sites on the [Fe4S4] clusters were further confirmed by density functional theory calculations. The observed H atom transfer reactivity of these coordination polymer-coated electrodes motivates additional applications of this composite material in reductive H atom transfer electrocatalysis. 

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5. Bandshift Luminescence Thermometry Using Mn ⁴⁺ :Na ₄ Mg(WO ₄ ) ₃ Phosphors

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   Amarasinghe, Dinesh K.; Rabuffetti, Federico A. (November 2019, Chemistry of Materials)

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