Phang, Won Ju Lee, Woo Ram Yoo, Kicheon Ryu, Dae Won Kim, BongSoo Hong, Chang Seop 2024-01-20T09:03:51Z 2024-01-20T09:03:51Z 2021-09-05 2014-08-04 1433-7851 https://pubs.kist.re.kr/handle/201004/126485 A porous metal-organic framework (MOF), [Ni-2-(dobdc)(H2O)2]center dot 6H(2)O (Ni-2(dobdc) or Ni-MOF-74; dobdc(4) = 2,5-dioxido-1,4-benzenedicarboxylate) with hexagonal channels was synthesized using a microwave-assisted solvothermal reaction. Soaking Ni-2(dobdc) in sulfuric acid solutions at different pH values afforded new proton-conducting frameworks, H@Ni-2(dobdc). At pH 1.8, the acidified MOF shows proton conductivity of 2.2 x 10(-2) S cm(-1) at 80 degrees 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@Ni-2(dobdc) play an important role in the conduction process. English John Wiley & Sons Ltd. COORDINATION POLYMER TRANSPORT pH-Dependent Proton Conducting Behavior in a Metal-Organic Framework Material Article 10.1002/anie.201404164 1 Angewandte Chemie International Edition, v.53, no.32, pp.8383 - 8387 Angewandte Chemie International Edition 53 32 8383 8387 scie scopus 000340522700020 2-s2.0-84905373939 Chemistry, Multidisciplinary Chemistry Article COORDINATION POLYMER TRANSPORT metal-organic frameworks proton conducting materials protonated water clusters