Magnesium‐Ion Batteries: High‐Rate and Long Cycle‐Life Alloy‐Type Magnesium‐Ion Battery Anode Enabled Through (De)magnesiation‐Induced Near‐Room‐Temperature Solid–Liquid Phase Transformation (Adv. Energy Mater. 45/2019)
- Award ID(s):
- 1840672
- PAR ID:
- 10200729
- Date Published:
- Journal Name:
- Advanced Energy Materials
- Volume:
- 9
- Issue:
- 45
- ISSN:
- 1614-6832
- Page Range / eLocation ID:
- 1970180
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
More Like this
-
Contrary to the understanding that divalent cations only result in under-estimation of gene quantification via DNA hybridization-based assays, we have discovered that Mg 2+ could cause either under or over-estimation at different concentrations. Its switchable inhibitory behavior is likely due to its rigid first solvation (hydrated) shell and hence it is inclined to form non-direct binding with DNA. At low concentrations, it caused under-estimation by occupying the hybridization sites. At high concentrations, it caused probe, signaling and target DNA to aggregate non-specifically via Coulomb forces. By quantifying target DNAs at a range of Mg 2+ concentrations using a gene quantification assay (NanoGene assay), a Mg 2+ inflection concentration of ∼10 −3 M was observed for both target ssDNA and dsDNA. Field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), and Fourier transform infrared spectroscopy (FT-IR) were employed to observe Mg 2+ -induced non-specific binding in the complexes that mimicked the presence of target DNA. Together with two other divalent cations Ca 2+ and Cu 2+ , they were further examined via zeta potential measurements as well as NanoGene assay. This study revealed the importance of Mg 2+ in achieving accurate gene quantification. Through a better mechanistic understanding of this phenomenon, it will be possible to develop strategies to mitigate the impact of Mg 2+ on DNA hybridization-based gene quantification.more » « less
-
Gas-phase ion-ion reactions between tris-1,10-phenantholine metal dications, [(phen)3M]2+ (where M = Ni and Mg), and the tetraphenylborate anion yield the ion-pairs {[(phen)3M]2+[BPh4]-}+. The ion-pairs undergo transmetalation upon loss of a phen ligand to give the organometallic complexes [(phen)2M(Ph)]+. DFT calculations, used to determine the energy barriers for the transmetalation reactions and the hydrolysis reactions, are entirely consistent with the experimental results.more » « less
An official website of the United States government

