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Metalo Hydrogen‐Bonded Organic Frameworks (MHOFs) as New Class of Crystalline Materials for Protonic Conduction
Author(s) -
Chand Santanu,
Pal Shyam Chand,
Pal Arun,
Ye Yingxiang,
Lin Quanjie,
Zhang Zhangjing,
Xiang Shengchang,
Das Madhab C.
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201805177
Subject(s) - polyoxometalate , metal organic framework , materials science , hydrogen bond , ionic bonding , polymer , hydrogen , inorganic chemistry , polymer chemistry , chemical engineering , chemistry , organic chemistry , molecule , composite material , ion , adsorption , engineering , catalysis
Recently, proton conduction has been a thread of high potential owing to its wide applications in fuel‐cell technology. In the search for a new class of crystalline materials for protonic conductors, three metalo hydrogen‐bonded organic frameworks (MHOFs) based on [Ni(Imdz) 6 ] 2+ and arene disulfonates (MHOF1 and MHOF2) or dicarboxylate (MHOF3) have been reported (Imdz=imidazole). The presence of an ionic backbone with charge‐assisted H‐bonds, coupled with amphiprotic imidazoles made these MHOFs protonic conductors, exhibiting conduction values of 0.75×10 −3 , 3.5×10 −4 and 0.97×10 −3 S cm −1 , respectively, at 80 °C and 98 % relative humidity, which are comparable to other crystalline metal‐organic framework, coordination polymer, polyoxometalate, covalent organic framework, and hydrogen‐bonded organic framework materials. This report initiates the usage of MHOF materials as a new class of solid‐state proton conductors.