skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Title: 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
Author(s) / Creator(s):
; ; ; ; ; ;
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
  1. 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
  2. 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