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Guest‐Assisted Proton Conduction in the Sulfonic Mesoporous MIL‐101 MOF
Author(s) -
DevautourVinot Sabine,
Sanil Eriyakkadan S.,
Geneste Amine,
Ortiz Vanessa,
Yot Pascal G.,
Chang JongSan,
Maurin Guillaume
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201900608
Subject(s) - proton , mesoporous material , conductivity , sulfonic acid , electrolyte , relative humidity , materials science , solid state , thermal conduction , electrical conductor , fast ion conductor , chemical engineering , polymer chemistry , chemistry , electrode , composite material , organic chemistry , catalysis , thermodynamics , physics , quantum mechanics , engineering
Post‐synthesis modification of MIL‐101(Cr)‐NO 2 was explored in order to decorate the organic backbone by propyl‐sulfonic groups, with the aim to incorporate mobile and acidic protons for solid‐state proton electrolyte applications. The resulting solid switched from insulating towards proton superconductive behavior under humidity, while the conductivity recorded at 363 K and 95 % relative humidity reached 4.8×10 −3 S cm −1 . Propitiously, the impregnation of the material by strong acidic molecules (H 2 SO 4 ) further boosted the proton conductivity performances up to the remarkable σ value of 1.3×10 −1 S cm −1 at 363 K/95 % RH, which reaches the performances of the best proton conductive MOF reported so far.