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Phosphonated Hexaphenylbenzene: A Crystalline Proton Conductor
Author(s) -
JiménezGarcía Lucía,
Kaltbeitzel Anke,
Pisula Wojciech,
Gutmann Jochen S.,
Klapper Markus,
Müllen Klaus
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200902116
Subject(s) - supramolecular chemistry , electrolyte , materials science , proton , bar (unit) , polymer chemistry , conductor , molecule , chemistry , chemical engineering , electrode , organic chemistry , physics , composite material , quantum mechanics , meteorology , engineering
Well stacked : Organic crystals of small molecules constitute an alternative to common polymeric electrolytes (Nafion 117) and inorganic crystals that are employed as proton exchange membranes in fuel cell systems. A phosphonic acid containing hexaphenylbenzene forms a columnar supramolecular array and exhibits a high and constant intrinsic conductivity of 3.2×10 −3 S cm −1 from 120 to 180 °C under 1 bar H 2 O atmosphere (see picture).