TY - JOUR
T1 - Design of novel molecular wires for realizing long-distance electron transfer
AU - Albers, Willem M.
AU - Lekkala, Jukka O.
AU - Jeuken, Lars
AU - Canters, Gerard W.
AU - Turner, Anthony P.F.
PY - 1997
Y1 - 1997
N2 - Novel heteroarene oligomers,
consisting of two pyridinium groups, linked by thiophene units of
variable length, “thienoviologens”, are described as promising
candidates for molecular wires. Two representative thienoviologens were
coated by adsorption from micromolar concentrations in ethanol onto
octadecylmercaptan (ODM)-coated gold electrodes and induced a gradual
restoration of the electrochemistry with hexacyanoferrate as a function
of molecular wire concentration. Glucose oxidase and choline oxidase
showed strong adsorption to these conductive layers, but showed striking
differences in adsorption to the different thienoviologen layers. The
measurements support the hypothesis that the molecules are incorporated
in the ODM layer in a different fashion. Also the complex formation of
an engineered azurin redox protein with water-soluble pyridyl ligands is
presented in relation to a possible application of the thienoviologens
as conductive spacers, in which the contact with the redox protein is
achieved via complex formation with a free pyridine nitrogen.
AB - Novel heteroarene oligomers,
consisting of two pyridinium groups, linked by thiophene units of
variable length, “thienoviologens”, are described as promising
candidates for molecular wires. Two representative thienoviologens were
coated by adsorption from micromolar concentrations in ethanol onto
octadecylmercaptan (ODM)-coated gold electrodes and induced a gradual
restoration of the electrochemistry with hexacyanoferrate as a function
of molecular wire concentration. Glucose oxidase and choline oxidase
showed strong adsorption to these conductive layers, but showed striking
differences in adsorption to the different thienoviologen layers. The
measurements support the hypothesis that the molecules are incorporated
in the ODM layer in a different fashion. Also the complex formation of
an engineered azurin redox protein with water-soluble pyridyl ligands is
presented in relation to a possible application of the thienoviologens
as conductive spacers, in which the contact with the redox protein is
achieved via complex formation with a free pyridine nitrogen.
U2 - 10.1016/S0302-4598(96)05150-1
DO - 10.1016/S0302-4598(96)05150-1
M3 - Article
SN - 0302-4598
VL - 42
SP - 25
EP - 33
JO - Bioelectrochemistry and Bioenergetics
JF - Bioelectrochemistry and Bioenergetics
IS - 1
ER -