These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Superprotonic Conductivity of MOFs Confining Zwitterionic Sulfamic Acid as Proton Source and Conducting Medium.
    Author: Sharma A, Lim J, Lee S, Han S, Seong J, Bin Baek S, Soo Lah M.
    Journal: Angew Chem Int Ed Engl; 2023 Jul 17; 62(29):e202302376. PubMed ID: 37160648.
    Abstract:
    A few metal-organic frameworks (MOFs), which typically use strong acids as proton sources, display superprotonic conductivity (≈10-1  S cm-1 ); however, they are rare due to the instability of MOFs in highly acidic conditions. For the first time, we report superprotonic conductivity using a moderately acidic guest, zwitterionic sulfamic acid (HSA), which is encapsulated in MOF-808 and MIL-101. HSA acts not only as a proton source but also as a proton-conducting medium due to its extensive hydrogen bonding ability and zwitterion effect. A new sustained concentration gradient method results in higher HSA encapsulation compared to conventional methods, producing 10HSA@MOF-808-(bSA)2 and 8HSA@MIL-101. These MOFs show impressive superprotonic conductivity of 2.47×10-1 and 3.06×10-1  S cm-1 , respectively, at 85 °C and 98 % relative humidity, and maintain stability for 7 days.
    [Abstract] [Full Text] [Related] [New Search]