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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.7b03846
|2 doi
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|a pubmed24n0943.xml
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Palmer, Rebecca H
|e verfasserin
|4 aut
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| 245 |
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|a Electroactive Ferrocene at or near the Surface of Metal-Organic Framework UiO-66
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 10.09.2018
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|a Date Revised 10.09.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Here, we describe the installation of a ferrocene derivative on and within the archetypal metal-organic framework (MOF), UiO-66, by solvent-assisted ligand incorporation. Thin films of the resulting material show a redox peak characteristic of the Fc/Fc+ couple, as measured by cyclic voltammetry. Consistent with restriction of redox reactivity solely to Fc molecules sited at or near the external surfaces of MOF crystallites, chronoamperometry measurements indicate that less than 20% of the installed Fc molecules are electrochemically active. Charge-transport diffusion coefficients, DCT, of 6.1 ± 0.8 × 10-11 and 2.6 ± 0.2 × 10-9 cm2/s were determined from potential step measurements, stepping oxidatively and reductively, respectively. The 40-fold difference in DCT values contrasts with the expectation, for simple systems, of identical values for oxidation-driven versus reduction-driven charge transport. The findings have implications for the design of MOFs suitable for delivery of redox equivalents to framework-immobilized electrocatalysts and/or delivery of charges from a chromophoric MOF film to an underlying electrode, processes that may be central to MOF-facilitated conversion of solar energy to chemical or electrical energy
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 700 |
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|a Liu, Jian
|e verfasserin
|4 aut
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|a Kung, Chung-Wei
|e verfasserin
|4 aut
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|a Hod, Idan
|e verfasserin
|4 aut
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|a Farha, Omar K
|e verfasserin
|4 aut
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|a Hupp, Joseph T
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 34(2018), 16 vom: 24. Apr., Seite 4707-4714
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:34
|g year:2018
|g number:16
|g day:24
|g month:04
|g pages:4707-4714
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|u http://dx.doi.org/10.1021/acs.langmuir.7b03846
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