Electrochemistry and photoelectrochemistry of transition metal complexes in well-ordered surface layers

Daiting Rong, Hun Gi Hong, Yeong Il Kim, Jonathan S. Krueger, James E. Mayer, Thomas E. Mallouk

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Two methods for preparing organized, multicomponent assemblies of electroactive complexes are described. Using a cationic silane reagent, a thin layer of zeolite or pillared clay particles can be tethered to an electrode surface. The silane provides a binding site for anionic complexes such as Fe(CN) 6 4- and Mo(CN) 8 4- , while the zeolite or clay component binds electroactive cations such as Os(bpy) 3 2+ , Ru(bpy) 3 2+ , and metallocenes. These assemblies act as rectifiers electrochemically because of spatial ordering of their electroactive anionic and cationic components. Clay-modified electrodes containing Ru(bpy) 3 2+ and Mo(CN) 8 4- or Fe(CN) 6 4- can also act as photodiodes, because of efficient electron transfer quenching of photoexcited Ru(bpy) 3 2+ by the film-bound anions. Another strategy for preparing organized electroactive films on surfaces involves the sequential adsorption of the components of the zirconium phosphonate structure from aqueous solution. Films produced in this way are morphologically similar to Langmiur-Blodgett multilayers. By incorporating both organic phosphonate and inorganic phosphate groups into the film, pillared materials with molecular sieving properties can be synthesized. These films bind electroactive cations smaller than the pillar height (ca 10 Å) and exclude larger cations. Spatially organized cation/anion electrode assemblies can thus be prepared which also act as current rectifiers.

Original languageEnglish (US)
Pages (from-to)237-248
Number of pages12
JournalCoordination Chemistry Reviews
Volume97
Issue numberC
DOIs
StatePublished - Jan 1 1990

Fingerprint

photoelectrochemistry
Coordination Complexes
Electrochemistry
electrochemistry
Metal complexes
Transition metals
surface layers
transition metals
Cations
Positive ions
assemblies
clays
Silanes
Zeolites
cations
Organophosphonates
Clay
rectifiers
silanes
Electrodes

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Rong, Daiting ; Hong, Hun Gi ; Kim, Yeong Il ; Krueger, Jonathan S. ; Mayer, James E. ; Mallouk, Thomas E. / Electrochemistry and photoelectrochemistry of transition metal complexes in well-ordered surface layers. In: Coordination Chemistry Reviews. 1990 ; Vol. 97, No. C. pp. 237-248.
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Electrochemistry and photoelectrochemistry of transition metal complexes in well-ordered surface layers. / Rong, Daiting; Hong, Hun Gi; Kim, Yeong Il; Krueger, Jonathan S.; Mayer, James E.; Mallouk, Thomas E.

In: Coordination Chemistry Reviews, Vol. 97, No. C, 01.01.1990, p. 237-248.

Research output: Contribution to journalArticle

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