Abstract
A porous metal-organic framework (MOF), [Ni2(dobdc)(H 2O)2] 6H2O (Ni2(dobdc) or Ni-MOF-74; dobdc4-=2,5-dioxido-1,4-benzenedicarboxylate) with hexagonal channels was synthesized using a microwave-assisted solvothermal reaction. Soaking Ni2(dobdc) in sulfuric acid solutions at different pH values afforded new proton-conducting frameworks, H+@Ni2(dobdc). At pH1.8, the acidified MOF shows proton conductivity of 2.2×10 -2Scm-1 at 80°C and 95% relative humidity (RH), approaching the highest values reported for MOFs. Proton conduction occurs via the Grotthuss mechanism with a significantly low activation energy as compared to other proton-conducting MOFs. Protonated water clusters within the pores of H+@Ni2(dobdc) play an important role in the conduction process.
| Original language | English |
|---|---|
| Pages (from-to) | 8383-8387 |
| Number of pages | 5 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 53 |
| Issue number | 32 |
| DOIs | |
| Publication status | Published - 2014 Aug 4 |
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ASJC Scopus subject areas
- Chemistry(all)
- Catalysis
Cite this
PH-dependent proton conducting behavior in a metal-organic framework material. / Phang, Won Ju; Lee, Woo Ram; Yoo, Kicheon; Ryu, Dae Won; Kim, Bongsoo; Hong, Chang Seop.
In: Angewandte Chemie - International Edition, Vol. 53, No. 32, 04.08.2014, p. 8383-8387.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - PH-dependent proton conducting behavior in a metal-organic framework material
AU - Phang, Won Ju
AU - Lee, Woo Ram
AU - Yoo, Kicheon
AU - Ryu, Dae Won
AU - Kim, Bongsoo
AU - Hong, Chang Seop
PY - 2014/8/4
Y1 - 2014/8/4
N2 - A porous metal-organic framework (MOF), [Ni2(dobdc)(H 2O)2] 6H2O (Ni2(dobdc) or Ni-MOF-74; dobdc4-=2,5-dioxido-1,4-benzenedicarboxylate) with hexagonal channels was synthesized using a microwave-assisted solvothermal reaction. Soaking Ni2(dobdc) in sulfuric acid solutions at different pH values afforded new proton-conducting frameworks, H+@Ni2(dobdc). At pH1.8, the acidified MOF shows proton conductivity of 2.2×10 -2Scm-1 at 80°C and 95% relative humidity (RH), approaching the highest values reported for MOFs. Proton conduction occurs via the Grotthuss mechanism with a significantly low activation energy as compared to other proton-conducting MOFs. Protonated water clusters within the pores of H+@Ni2(dobdc) play an important role in the conduction process.
AB - A porous metal-organic framework (MOF), [Ni2(dobdc)(H 2O)2] 6H2O (Ni2(dobdc) or Ni-MOF-74; dobdc4-=2,5-dioxido-1,4-benzenedicarboxylate) with hexagonal channels was synthesized using a microwave-assisted solvothermal reaction. Soaking Ni2(dobdc) in sulfuric acid solutions at different pH values afforded new proton-conducting frameworks, H+@Ni2(dobdc). At pH1.8, the acidified MOF shows proton conductivity of 2.2×10 -2Scm-1 at 80°C and 95% relative humidity (RH), approaching the highest values reported for MOFs. Proton conduction occurs via the Grotthuss mechanism with a significantly low activation energy as compared to other proton-conducting MOFs. Protonated water clusters within the pores of H+@Ni2(dobdc) play an important role in the conduction process.
KW - metal-organic frameworks
KW - proton conducting materials
KW - protonated water clusters
UR - http://www.scopus.com/inward/record.url?scp=84905373939&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84905373939&partnerID=8YFLogxK
U2 - 10.1002/anie.201404164
DO - 10.1002/anie.201404164
M3 - Article
AN - SCOPUS:84905373939
VL - 53
SP - 8383
EP - 8387
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 32
ER -