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1. Rearrangement of a Ge( ii ) aryloxide to yield a new Ge( ii ) oxo-cluster [Ge 6 (μ 3 -O) 4 (μ 2 -OC 6 H 2 -2,4,6-Cy 3 ) 4 ](NH 3 ) 0.5 : main group aryloxides of Ge( ii ), Sn( ii ), and Pb( ii ) [M(OC 6 H 2 -2,4,6-Cy 3 ) 2 ] 2 (Cy = cyclohexyl)

   https://doi.org/10.1039/D3DT00906H  

   McLoughlin, Connor P. ; Kaseman, Derrick C. ; Fettinger, James C. ; Power, Philip P. ( July 2023 , Dalton Transactions)

   Spontaneous Ge₆O₈cluster formation under ambient conditions using dispersion enhanced aryloxo ligands.

    

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2. In situ Raman spectroscopy of pressure‐induced phase transformations in polycrystalline Tb PO 4 , Dy PO 4 , and Gd x Dy (1−x) PO 4

   https://doi.org/10.1111/jace.15374  

   Musselman, Matthew A. ; Wilkinson, Taylor M. ; Haberl, Bianca ; Packard, Corinne E. ( January 2018 , Journal of the American Ceramic Society)
3. Separation of C2–C4 hydrocarbons from methane by zeolite MFI hollow fiber membranes fabricated from 2D nanosheets

   https://doi.org/10.1002/aic.17048  

   Min, Byunghyun ; Korde, Akshay ; Yang, Shaowei ; Kim, Youngjo ; Jones, Christopher W. ; Nair, Sankar ( September 2020 , AIChE Journal)

   Separation of higher hydrocarbons from methane is an important and energy‐intensive operation in natural gas processing. We present a detailed investigation of thin and oriented MFI zeolite membranes fabricated from 2D MFI nanosheets on inexpensive α‐alumina hollow fiber supports, particularly for separation ofn‐butane, propane, and ethane (“natural gas liquids”) from methane. These membranes display high permeances and selectivities for C₂–C₄hydrocarbons over methane, driven primarily by stronger adsorption of C₂–C₄hydrocarbons. We study the separation characteristics under unary, binary, ternary, and quaternary mixture conditions at 298 K and 100–900 kPa feed pressures. The membranes are highly effective in quaternary mixture separation at elevated feed pressures, for example allowingn‐butane/methane separation factors of 170–280 andn‐butane permeances of 710–2,700 GPU over the feed pressure range. We parametrize and apply multicomponent Maxwell–Stefan transport equations to predict the main trends in separation behavior over a range of operating conditions.

    

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4. Simultaneous Mapping of T1 and T2 Using Cardiac Magnetic Resonance Fingerprinting in a Cohort of Healthy Subjects at 1. 5T

   https://doi.org/10.1002/jmri.27155  

   Hamilton, Jesse I. ; Pahwa, Shivani ; Adedigba, Joseph ; Frankel, Samuel ; O'Connor, Gregory ; Thomas, Rahul ; Walker, Jonathan R. ; Killinc, Ozden ; Lo, Wei‐Ching ; Batesole, Joshua ; et al ( March 2020 , Journal of Magnetic Resonance Imaging)

   Cardiac MR fingerprinting (cMRF) is a novel technique for simultaneous T₁and T₂mapping.

   To compare T₁/T₂measurements, repeatability, and map quality between cMRF and standard mapping techniques in healthy subjects.

   Prospective.

   In all, 58 subjects (ages 18–60).

   cMRF, modified Look–Locker inversion recovery (MOLLI), and T₂‐prepared balanced steady‐state free precession (bSSFP) at 1.5T.

   T₁/T₂values were measured in 16 myocardial segments at apical, medial, and basal slice positions. Test–retest and intrareader repeatability were assessed for the medial slice. cMRF and conventional mapping sequences were compared using ordinal and two alternative forced choice (2AFC) ratings.

   Pairedt‐tests, Bland–Altman analyses, intraclass correlation coefficient (ICC), linear regression, one‐way analysis of variance (ANOVA), and binomial tests.

   Average T₁measurements were: basal 1007.4±96.5 msec (cMRF), 990.0±45.3 msec (MOLLI); medial 995.0±101.7 msec (cMRF), 995.6±59.7 msec (MOLLI); apical 1006.6±111.2 msec (cMRF); and 981.6±87.6 msec (MOLLI). Average T₂measurements were: basal 40.9±7.0 msec (cMRF), 46.1±3.5 msec (bSSFP); medial 41.0±6.4 msec (cMRF), 47.4±4.1 msec (bSSFP); apical 43.5±6.7 msec (cMRF), 48.0±4.0 msec (bSSFP). A statistically significant bias (cMRF T₁larger than MOLLI T₁) was observed in basal (17.4 msec) and apical (25.0 msec) slices. For T₂, a statistically significant bias (cMRF lower than bSSFP) was observed for basal (–5.2 msec), medial (–6.3 msec), and apical (–4.5 msec) slices. Precision was lower for cMRF—the average of the standard deviation measured within each slice was 102 msec for cMRF vs. 61 msec for MOLLI T₁, and 6.4 msec for cMRF vs. 4.0 msec for bSSFP T₂. cMRF and conventional techniques had similar test–retest repeatability as quantified by ICC (0.87 cMRF vs. 0.84 MOLLI for T₁; 0.85 cMRF vs. 0.85 bSSFP for T₂). In the ordinal image quality comparison, cMRF maps scored higher than conventional sequences for both T₁(all five features) and T₂(four features).

   This work reports on myocardial T₁/T₂measurements in healthy subjects using cMRF and standard mapping sequences. cMRF had slightly lower precision, similar test–retest and intrareader repeatability, and higher scores for map quality.

   2

   Stage 1 J. Magn. Reson. Imaging 2020;52:1044–1052.

    

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5. Synthesis of SnO2 / TiO2 micro belt fibers from polymer composite precursors and their applications in Li‐ion batteries*

   https://doi.org/10.1002/pen.25799  

   Gonzalez, Gabriel ; Hasan, Md Toukir ; Ramirez, Daniel ; Parsons, Jason ; Alcoutlabi, Mataz ( February 2022 , Polymer Engineering & Science)