Structural Transitions of the Metal-Oxide Nodes within Metal-Organic Frameworks: On the Local Structures of NU-1000 and UiO-66

Ana E. Platero-Prats; Andreas Mavrandonakis; Leighanne C. Gallington; Yangyang Liu; Joseph T. Hupp; Omar K. Farha; Christopher J. Cramer; Karena W. Chapman

doi:10.1021/jacs.6b00069

Structural Transitions of the Metal-Oxide Nodes within Metal-Organic Frameworks: On the Local Structures of NU-1000 and UiO-66

Ana E. Platero-Prats, Andreas Mavrandonakis, Leighanne C. Gallington, Yangyang Liu, Joseph T. Hupp, Omar K. Farha, Christopher J. Cramer, Karena W. Chapman

Research output: Contribution to journal › Article › peer-review

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Abstract

In situ pair distribution function (PDF) analyses and density functional theory (DFT) computations are used to probe local structural transitions of M₆O₈ nodes found in two metal organic frameworks (MOFs), NU-1000 and UiO-66, for M = Zr, Hf. Such transitions are found to occur without change to the global framework symmetry at temperatures within a range relevant to many potential MOF applications. For the particular M₆(O)₈ nodes studied here, the observed distortions can be mapped to polymorphic forms known for bulk ZrO₂. In the MOF framework, however, node distortions are found to occur at substantially lower temperature than analogous distortions in bulk ZrO₂ owing to the nanoscale nature of the former.

Original language	English (US)
Pages (from-to)	4178-4185
Number of pages	8
Journal	Journal of the American Chemical Society
Volume	138
Issue number	12
DOIs	https://doi.org/10.1021/jacs.6b00069
State	Published - Apr 20 2016

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© 2016 American Chemical Society.

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title = "Structural Transitions of the Metal-Oxide Nodes within Metal-Organic Frameworks: On the Local Structures of NU-1000 and UiO-66",

abstract = "In situ pair distribution function (PDF) analyses and density functional theory (DFT) computations are used to probe local structural transitions of M6O8 nodes found in two metal organic frameworks (MOFs), NU-1000 and UiO-66, for M = Zr, Hf. Such transitions are found to occur without change to the global framework symmetry at temperatures within a range relevant to many potential MOF applications. For the particular M6(O)8 nodes studied here, the observed distortions can be mapped to polymorphic forms known for bulk ZrO2. In the MOF framework, however, node distortions are found to occur at substantially lower temperature than analogous distortions in bulk ZrO2 owing to the nanoscale nature of the former.",

author = "Platero-Prats, {Ana E.} and Andreas Mavrandonakis and Gallington, {Leighanne C.} and Yangyang Liu and Hupp, {Joseph T.} and Farha, {Omar K.} and Cramer, {Christopher J.} and Chapman, {Karena W.}",

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AU - Platero-Prats, Ana E.

AU - Mavrandonakis, Andreas

AU - Gallington, Leighanne C.

AU - Liu, Yangyang

AU - Hupp, Joseph T.

AU - Farha, Omar K.

AU - Cramer, Christopher J.

AU - Chapman, Karena W.

PY - 2016/4/20

Y1 - 2016/4/20

N2 - In situ pair distribution function (PDF) analyses and density functional theory (DFT) computations are used to probe local structural transitions of M6O8 nodes found in two metal organic frameworks (MOFs), NU-1000 and UiO-66, for M = Zr, Hf. Such transitions are found to occur without change to the global framework symmetry at temperatures within a range relevant to many potential MOF applications. For the particular M6(O)8 nodes studied here, the observed distortions can be mapped to polymorphic forms known for bulk ZrO2. In the MOF framework, however, node distortions are found to occur at substantially lower temperature than analogous distortions in bulk ZrO2 owing to the nanoscale nature of the former.

AB - In situ pair distribution function (PDF) analyses and density functional theory (DFT) computations are used to probe local structural transitions of M6O8 nodes found in two metal organic frameworks (MOFs), NU-1000 and UiO-66, for M = Zr, Hf. Such transitions are found to occur without change to the global framework symmetry at temperatures within a range relevant to many potential MOF applications. For the particular M6(O)8 nodes studied here, the observed distortions can be mapped to polymorphic forms known for bulk ZrO2. In the MOF framework, however, node distortions are found to occur at substantially lower temperature than analogous distortions in bulk ZrO2 owing to the nanoscale nature of the former.

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Structural Transitions of the Metal-Oxide Nodes within Metal-Organic Frameworks: On the Local Structures of NU-1000 and UiO-66

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Energy Frontier Research Center For Inorganometallic Catalyst Design (DE-SC0012702)

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Structural Transitions of the Metal-Oxide Nodes within Metal-Organic Frameworks: On the Local Structures of NU-1000 and UiO-66

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Bibliographical note

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Energy Frontier Research Center For Inorganometallic Catalyst Design (DE-SC0012702)

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