Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 22, Pages 6662-6666Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201802632
Keywords
coordination polymers; fuel cells; H-bonding; proton conduction; templates
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Funding
- SERB, New Delhi [ECR/2015/000041]
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Three coordination polymers (CPs) have been synthesized based on a [Co(bpy)(H2O)(4)](2+) chain (bpy=4,4'-bipyridine) by a template approach. The frameworks are neutralized by different templated polycarboxylate anions (furan di-carboxylate (fdc) in Co-fdc, benzene tri-carboxylate (btc) in Co-tri and benzene tetra-carboxylate (btec) in Co-tetra). These templates with different degrees of protonation and ionic carrier concentration played significant role on crystal packing as well as formation of well-directed H-bonded networks which made these CPs perform well in proton conduction (PC). The PC value reaches to 1.49x10(-1) Scm(-1) under 80 degrees C and 98% relative humidity (R.H.) for Co-tri, which is the highest among CPs/MOFs/COFs and is an example of conductivity in the order of 10(-1) Scm(-1). Co-tri and Co-tetra are excellent proton conductors at mild temperature (40 degrees C) and 98% R.H. (conductivities up to 2.92x10(-2) and 1.38x10(-2) Scm(-1), respectively).
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