More Like this

1. Solid-State End-On to Side-On Isomerization of (N═N) 2– in {[(R 2 N) 3 Nd] 2 N 2 } 2– (R = SiMe 3 ) Connects In Situ Ln III (NR 2 ) 3 /K and Isolated [Ln II (NR 2 ) 3 ] 1– Dinitrogen Reduction

   https://doi.org/10.1021/jacs.2c06716  

   Chung, Amanda B. ; Rappoport, Dmitrij ; Ziller, Joseph W. ; Cramer, Roger E. ; Furche, Filipp ; Evans, William J. ( September 2022 , Journal of the American Chemical Society)
2. High-Resolution X-ray Photoelectron Spectroscopy of Organometallic (C 5 H 4 SiMe 3 ) 3 Ln III and [(C 5 H 4 SiMe 3 ) 3 Ln II ] 1– Complexes (Ln = Sm, Eu, Gd, Tb)

   https://doi.org/10.1021/jacs.1c06980  

   Huh, Daniel N. ; Bruce, Jared P. ; Ganesh Balasubramani, Sree ; Ciccone, Sierra R. ; Furche, Filipp ; Hemminger, John C. ; Evans, William J. ( October 2021 , Journal of the American Chemical Society)
3. [Ga 3+ 8 Sm 3+ 2 , Ga 3+ 8 Tb 3+ 2 ] Metallacrowns are Highly Promising Ratiometric Luminescent Molecular Nanothermometers Operating at Physiologically Relevant Temperatures

   https://doi.org/10.1002/chem.202003239  

   Salerno, Elvin V. ; Zeler, Justyna ; Eliseeva, Svetlana V. ; Hernández‐Rodríguez, Miguel A. ; Carneiro Neto, Albano N. ; Petoud, Stéphane ; Pecoraro, Vincent L. ; Carlos, Luís D. ( September 2020 , Chemistry – A European Journal)

   Nanothermometry is the study of temperature at the submicron scale with a broad range of potential applications, such as cellular studies or electronics. Molecular luminescent‐based nanothermometers offer a non‐contact means to record these temperatures with high spatial resolution and thermal sensitivity. A luminescent‐based molecular thermometer comprised of visible‐emitting Ga³⁺/Tb³⁺and Ga³⁺/Sm³⁺metallacrowns (MCs) achieved remarkable relative thermal sensitivity associated with very low temperature uncertainty ofS_r=1.9 % K⁻¹andδT<0.045 K, respectively, at 328 K, as an aqueous suspension of polystyrene nanobeads loaded with the corresponding MCs. To date, they are the ratiometric molecular nanothermometers offering the highest level of sensitivity in the physiologically relevant temperature range.

    

   more » « less
4. Evaluating electrochemical accessibility of 4f n 5d 1 and 4f n+1 Ln( ii ) ions in (C 5 H 4 SiMe 3 ) 3 Ln and (C 5 Me 4 H) 3 Ln complexes

   https://doi.org/10.1039/D1DT02427B  

   Trinh, Michael T. ; Wedal, Justin C. ; Evans, William J. ( October 2021 , Dalton Transactions)

   The reduction potentials (reported vs. Fc + /Fc) for a series of Cp′ 3 Ln complexes (Cp′ = C 5 H 4 SiMe 3 , Ln = lanthanide) were determined via electrochemistry in THF with [ n Bu 4 N][BPh 4 ] as the supporting electrolyte. The Ln( iii )/Ln( ii ) reduction potentials for Ln = Eu, Yb, Sm, and Tm (−1.07 to −2.83 V) follow the expected trend for stability of 4f 7 , 4f 14 , 4f 6 , and 4f 13 Ln( ii ) ions, respectively. The reduction potentials for Ln = Pr, Nd, Gd, Tb, Dy, Ho, Er, and Lu, that form 4f n 5d 1 Ln( ii ) ions ( n = 2–14), fall in a narrow range of −2.95 V to −3.14 V. Only cathodic events were observed for La and Ce at −3.36 V and −3.43 V, respectively. The reduction potentials of the Ln( ii ) compounds [K(2.2.2-cryptand)][Cp′ 3 Ln] (Ln = Pr, Sm, Eu) match those of the Cp′ 3 Ln complexes. The reduction potentials of nine (C 5 Me 4 H) 3 Ln complexes were also studied and found to be 0.05–0.24 V more negative than those of the Cp′ 3 Ln compounds. 

   more » « less
5. Efficient Removal of Cs + and Sr 2+ Ions by Granulous (Me 2 NH 2 ) 4/3 (Me 3 NH) 2/3 Sn 3 S 7 ·1.25H 2 O/Polyacrylonitrile Composite

   https://doi.org/10.1021/acsami.1c01983  

   Li, Jilong ; Jin, Jiance ; Zou, Yanmin ; Sun, Haiyan ; Zeng, Xi ; Huang, Xiaoying ; Feng, Meiling ; Kanatzidis, Mercouri G. ( March 2021 , ACS Applied Materials & Interfaces)

   null (Ed.)