Cooperative Crystallization of Heterometallic Indium-Chromium Metal-Organic Polyhedra and Their Fast Proton Conductivity
Metal–organic polyhedra (MOPs) or frameworks (MOFs) based on Cr3+ are notoriously difficult to synthesize, especially as crystals large enough to be suitable for characterization of the structure or properties. It is now shown that the co‐existence of In3+ and Cr3+ induces a rapid crystal growth of...
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Published in | Angewandte Chemie (International ed.) Vol. 54; no. 27; pp. 7886 - 7890 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
26.06.2015
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
Edition | International ed. in English |
Subjects | |
Online Access | Get full text |
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Summary: | Metal–organic polyhedra (MOPs) or frameworks (MOFs) based on Cr3+ are notoriously difficult to synthesize, especially as crystals large enough to be suitable for characterization of the structure or properties. It is now shown that the co‐existence of In3+ and Cr3+ induces a rapid crystal growth of large single crystals of heterometallic In‐Cr‐MOPs with the [M8L12] (M=In/Cr, L=dinegative 4,5‐imidazole‐dicarboxylate) cubane‐like structure. With a high concentration of protons from 12 carboxyl groups decorating every edge of the cube and an extensive H‐bonded network between cubes and surrounding H2O molecules, the newly synthesized In‐Cr‐MOPs exhibit an exceptionally high proton conductivity (up to 5.8×10−2 S cm−1 at 22.5 °C and 98 % relative humidity, single crystal).
In3+ befriending Cr3+: Indium and chromium ions drag each other into unprecedented heterometallic In‐Cr‐MOP (metal–organic polyhedra) crystals. These have a high proton conductivity (5.8×10−2 S cm−1) at 22.5 °C and 98 % relative humidity for a single crystal. |
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Bibliography: | ArticleID:ANIE201503095 ark:/67375/WNG-M1D3KGV3-N istex:E9F007BE89C0C1A5D651FDE1FC7F64A3277491B7 The work is supported by the US Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under award No. DE-FG02-13ER46972. US Department of Energy - No. DE-FG02-13ER46972 The work is supported by the US Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under award No. DE‐FG02‐13ER46972. ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1433-7851 1521-3773 |
DOI: | 10.1002/anie.201503095 |