Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surface

Water-insoluble phosphine-surface-stabilised rhodium clusters [Rh6 (PR3)6 H12] [BAr4F]2 (R = cyclohexyl, ArF = (3,5-CF3)2C6H3) can be immobilised onto suitable glassy carbon, graphite, or tin-doped indium oxide (ITO) electrode surfaces. When immersed into alcohol/aqueous electrolyte media, they disp...

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Main Authors: Hiney, R, Marken, F, Raithby, P, Weller, A
Format: Journal article
Language:English
Published: 2009
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author Hiney, R
Marken, F
Raithby, P
Weller, A
author_facet Hiney, R
Marken, F
Raithby, P
Weller, A
author_sort Hiney, R
collection OXFORD
description Water-insoluble phosphine-surface-stabilised rhodium clusters [Rh6 (PR3)6 H12] [BAr4F]2 (R = cyclohexyl, ArF = (3,5-CF3)2C6H3) can be immobilised onto suitable glassy carbon, graphite, or tin-doped indium oxide (ITO) electrode surfaces. When immersed into alcohol/aqueous electrolyte media, they display stable voltammetric responses consistent with the formation of organic microdroplet | aqueous electrolyte two-phase conditions which are similar to those observed in corresponding anhydrous (CH2Cl2) solution phase. This results in an electrode surface that is straightforwardly modified with cluster materials that can uptake or release dihydrogen depending on their redox-state. The results presented herein lead to a slight re-evaluation of the originally reported hydrogen store and release cycle for this system. © 2009 Elsevier B.V. All rights reserved.
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spelling oxford-uuid:6fc18d1c-06b1-426c-9ca4-68b0605a173a2022-03-26T19:32:41ZAqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surfaceJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6fc18d1c-06b1-426c-9ca4-68b0605a173aEnglishSymplectic Elements at Oxford2009Hiney, RMarken, FRaithby, PWeller, AWater-insoluble phosphine-surface-stabilised rhodium clusters [Rh6 (PR3)6 H12] [BAr4F]2 (R = cyclohexyl, ArF = (3,5-CF3)2C6H3) can be immobilised onto suitable glassy carbon, graphite, or tin-doped indium oxide (ITO) electrode surfaces. When immersed into alcohol/aqueous electrolyte media, they display stable voltammetric responses consistent with the formation of organic microdroplet | aqueous electrolyte two-phase conditions which are similar to those observed in corresponding anhydrous (CH2Cl2) solution phase. This results in an electrode surface that is straightforwardly modified with cluster materials that can uptake or release dihydrogen depending on their redox-state. The results presented herein lead to a slight re-evaluation of the originally reported hydrogen store and release cycle for this system. © 2009 Elsevier B.V. All rights reserved.
spellingShingle Hiney, R
Marken, F
Raithby, P
Weller, A
Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surface
title Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surface
title_full Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surface
title_fullStr Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surface
title_full_unstemmed Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surface
title_short Aqueous-organic biphasic redox-chemistry of high-hydride content rhodium clusters: Towards immobilisation of redox-switchable H-2 binding materials on a surface
title_sort aqueous organic biphasic redox chemistry of high hydride content rhodium clusters towards immobilisation of redox switchable h 2 binding materials on a surface
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AT markenf aqueousorganicbiphasicredoxchemistryofhighhydridecontentrhodiumclusterstowardsimmobilisationofredoxswitchableh2bindingmaterialsonasurface
AT raithbyp aqueousorganicbiphasicredoxchemistryofhighhydridecontentrhodiumclusterstowardsimmobilisationofredoxswitchableh2bindingmaterialsonasurface
AT wellera aqueousorganicbiphasicredoxchemistryofhighhydridecontentrhodiumclusterstowardsimmobilisationofredoxswitchableh2bindingmaterialsonasurface