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1. Combinatorial synthesis and characterization of thin film Al _1−x RE _x N (RE = Pr ³⁺ and Tb ³⁺ ) heterostructural alloys

   https://doi.org/10.1039/D4TC02868F  

   Paudel, Binod; Mangum, John S; Rom, Christopher L; Egbo, Kingsley; Lee, Cheng-Wei; Guthrey, Harvey; Allen, Sean; Haegel, Nancy M; Yazawa, Keisuke; Brennecka, Geoff L; et al (December 2024, Journal of Materials Chemistry C)

   High-throughput combinatorial synthesis of Al_1−xRE_xN (RE = Pr, Tb) thin films with 0 <x< 0.4 was performed to assess composition-phase-property relationships in an emerging materials family. 

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2. The Majority Theorem for the Single ( p  = 1) Median Problem and Local Spatial Autocorrelation

   https://doi.org/10.1111/gean.12321  

   Griffith, Daniel A.; Chun, Yongwan; Kim, Hyun (March 2022, Geographical Analysis)

   Except for about a half dozen papers, virtually all (co)authored by Griffith, the existing literature lacks much content about the interface between spatial optimization, a popular form of geographic analysis, and spatial autocorrelation, a fundamental property of georeferenced data. The popularp‐median location‐allocation problem highlights this situation: the empirical geographic distribution of demand virtually always exhibits positive spatial autocorrelation. This property of geospatial data offers additional overlooked information for solving such spatial optimization problems when it actually relates to their solutions. With a proof‐of‐concept outlook, this paper articulates connections between the well‐known Majority Theorem of the 1‐median minisum problem and local indices of spatial autocorrelation; the LISA statistics appear to be the more useful of these later statistics because they better embrace negative spatial autocorrelation. The relationship articulation outlined here results in the positing of a new proposition labeled the egalitarian theorem. 

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3. Measurement of in-medium modification of energy-space structure of jets via γ and π⁰ triggered hadrons in Au+Au collisions at RHIC

   https://doi.org/10.1051/epjconf/202429611011  

   Connors, Megan (June 2024, EPJ Web of Conferences)

   Bellwied, R; Geurts, F; Rapp, R; Ratti, C; Timmins, A; Vitev, I (Ed.)

   Since the discovery of the jet quenching at RHIC, the in-medium interaction of hard scattered partons with the nuclear medium created by highenergy heavy-ion collisions has been an excellent tool to understand not only the transport properties of the medium but also its time evolution towards hadronization. The multi-differential measurement of the high momentum twoparticle correlations can probe a particular space-time window as a function of energy transfer. Comparing the correlations with the prompt photon-triggered hadron spectra, one can extract the property of the medium from various aspects and contribute to distinct models. The PHENIX experiment at RHIC has collected its highest statistics of theγ and π⁰ triggered hadron events in Au+Au collisions at √s_NN= 200 GeV in the RHIC Year-2014 run, and measured not only the inclusive spectra of the triggered hadrons but also the angle and energy dependent I_AA and D_AA. We will discuss the in-medium modification of the energy-space structure of the jets at the RHIC energies with the results obtained. 

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4. Distinctive Photomechanical Shape Change of p ‐Phenylenediacrylic Acid Dimethyl Ester Single Crystals Induced by a Spatially Heterogeneous Photoreaction

   https://doi.org/10.1002/anie.202420243  

   Kitagawa, Daichi; Tomoda, Rei; Ramos, Sebastian_A; Beran, Gregory_J_O; Bardeen, Christopher_J; Kobatake, Seiya (December 2024, Angewandte Chemie International Edition)

   Abstract Understanding photoreaction dynamics in crystals is important for predicting the dynamic property changes accompanying these photoreactions. In this work, we investigate the photoreaction dynamics ofp‐phenylenediacrylic acid dimethyl ester (p‐PDAMe) in single crystals that show reaction front propagation, in which the photoreaction proceeds heterogeneously from the edge to the center of the crystal. Moreover, we find thatp‐PDAMesingle crystals exhibit a distinctive crystal shape change from a parallelogram to a distorted shape resembling a fluttering flag, then to a rectangle as the photoreaction proceeds. Density functional theory calculations predict the crystal structure after the photoreaction, providing a reasonable explanation of the distinctive crystal shape change that results from the spatially heterogeneous photoreaction. These results prove that the spatially heterogeneous photoreaction dynamics have the ability to induce novel crystal shape changes beyond what would be expected based on the equilibrium reactant and product crystal shapes. 

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5. Lewis Acidity of the SbCl ₃ / o ‐chloranil System

   https://doi.org/10.1002/anie.202505893  

   Şit, Ferit; Hunter, Nathanael_H; Maltz, Logan_T; Gabbaï, François_P (May 2025, Angewandte Chemie International Edition)

   Abstract While SbCl₃is typically inert toward oxidation byortho‐quinones, we useo‐chloranil to show that the outcome of such reactions may be altered by the presence of a donor such as triphenylphosphine oxide, which readily traps the SbCl₃(cat^Cl) synthon (cat^Cl = tetrachlorocatecholate) in the form of the corresponding adduct Ph₃PO→SbCl₃(cat^Cl). The same reaction in the presence of a chloride salt affords the corresponding antimonate anion [Cl₄Sb(cat^Cl)]⁻. Computational studies indicate that the putative SbCl₃(cat^Cl) synthon has a higher chloride ion affinity than SbCl₅, suggesting significant Lewis acidity. This property is further demonstrated by the use of the SbCl₃/o‐chloranil system for both THF polymerization and a Friedel–Crafts‐type alkylation of benzene using 1‐fluorooctane. Finally, the reaction ofE‐stilbene witho‐chloranil in the presence of SbCl₃affords the corresponding benzodioxene, suggesting that SbCl₃may also operate as a redox‐active catalyst. 

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