S
Samantha I. Johnson
Researcher at Pacific Northwest National Laboratory
Publications - 32
Citations - 840
Samantha I. Johnson is an academic researcher from Pacific Northwest National Laboratory. The author has contributed to research in topics: Catalysis & Hydrogen atom abstraction. The author has an hindex of 15, co-authored 27 publications receiving 588 citations. Previous affiliations of Samantha I. Johnson include University of Colorado Boulder & California Institute of Technology.
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Journal ArticleDOI
Influence of the Triel Elements (M = Al, Ga, In) on the Transport Properties of Ca_5M_2Sb_6 Zintl Compounds
Alex Zevalkink,Gregory Pomrehn,Samantha I. Johnson,Jessica Swallow,Zachary M. Gibbs,G. Jeffrey Snyder +5 more
TL;DR: In this article, the effects of M-site substitutions on the effective mass and band gap are reflected in measurements of the high temperature electronic properties of Ca_5M_2Sb_6 samples (M = Al, Ga, and In).
Journal ArticleDOI
Proton–hydride tautomerism in hydrogen evolution catalysis
Luis M. Aguirre Quintana,Samantha I. Johnson,Sydney L. Corona,Walther Villatoro,William A. Goddard,Michael K. Takase,David G. VanderVelde,Jay R. Winkler,Harry B. Gray,James D. Blakemore,James D. Blakemore +10 more
TL;DR: An important role for close metal–ligand cooperation in promoting hydrogen–evolution catalysis is suggested and a key intermediate is isolated and characterized in the 2e− + 2H+ → H2 reaction catalyzed by η5-pentamethylcyclopentadienyl (Cp*) Rh(κ2-2,2′-bipyridyl)
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Mechanism of Catalytic O2 Reduction by Iron Tetraphenylporphyrin.
Michael L. Pegis,Daniel J. Martin,Catherine F. Wise,Anna C. Brezny,Samantha I. Johnson,Lewis E. Johnson,Neeraj Kumar,Simone Raugei,James M. Mayer +8 more
TL;DR: These results are the first example of oxygen reduction by iron tetraphenylporphyrin where the pre-equilibria among ferric, ferrous, and ferric-superoxide intermediates have been quantified under catalytic conditions.
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Catalytic Silylation of N2 and Synthesis of NH3 and N2H4 by Net Hydrogen Atom Transfer Reactions Using a Chromium P4 Macrocycle
TL;DR: The first discrete molecular Cr-based catalysts for the reduction of N2 are reported, and the first example of NH3 formation from the reaction of a terminally bound N2 ligand with a traditional H atom source, TEMPOH is found.
Journal ArticleDOI
Oxidation of Ammonia with Molecular Complexes
TL;DR: This perspective evaluates the challenges of designing molecular catalysts for oxidation of ammonia, and highlights recent key contributions to realiz-ing the goals of viable energy storage and retrieval based on the N-H bonds of ammonia in a carbon-free energy cycle.