---
res:
  bibo_abstract:
  - Proton exchange membranes (PEMs) are essential for fuel cells, yet conventional
    materials like Nafion suffer from humidity dependence and limited thermal stability.
    This study introduces sulfonated phenylene-bridged periodic mesoporous organosilicas
    (PMOs) as promising inorganic–organic hybrid PEMs, synthesized via surfactant-templating
    with varying alkyl chain lengths for different mesopore sizes. Post-synthetic
    functionalization involves nitration of phenylene moieties, reduction to amines,
    and ring-opening of propane or butane sultones to graft sulfonic acid groups via
    flexible spacers, achieving homogeneous distribution along pore walls. Post-functionalization
    is confirmed by powder X-ray diffraction (PXRD), revealing preserved 2D hexagonal
    p6mm ordering and phenylene stacking. N2 physisorption shows type IV isotherms
    with reduced pore volumes and pore sizes. 1H NMR is used to quantify functionalization
    degrees. Impedance spectroscopy on pressed pellets demonstrates proton conductivities
    up to 2 × 10−3 S cm−1 at 30 °C and 90% RH, depending on the functionalization
    degree, confirming sulfonic acid-mediated conduction.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Tobias
      foaf_name: Wagner, Tobias
      foaf_surname: Wagner
  - foaf_Person:
      foaf_givenName: Michael
      foaf_name: Tiemann, Michael
      foaf_surname: Tiemann
      foaf_workInfoHomepage: http://www.librecat.org/personId=23547
    orcid: 0000-0003-1711-2722
  bibo_doi: 10.3390/nano16030203
  bibo_issue: '3'
  bibo_volume: 16
  dct_date: 2026^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2079-4991
  dct_language: eng
  dct_publisher: MDPI AG@
  dct_title: Proton-Conducting Sulfonated Periodic Mesoporous Organosilica@
...