TY - JOUR
T1 - An Au nanoparticle/bisbipyridinium cyclophane-functionalized ion- sensitive field-effect transistor for the sensing of adrenaline
AU - Kharitonov, Andrei B.
AU - Shipway, Andrew N.
AU - Willner, Itamar
PY - 1999/12/1
Y1 - 1999/12/1
N2 - A film consisting of polyethyleneimine (PEI), Au nanoparticles (12 ± 1 nm) and coadsorbed cyclobis(paraquat-p-phenylene) (1) was assembled as a sensing interface on the Al23 insulating layer of an ion-sensitive field- effect transistor (ISFET). Adrenaline (2) was sensed by the functionalized ISFET with a detection limit of 1 x 10-6 M. The sensing ability of the nanostructured device for the analysis of adrenaline originates from the preconcentration of the analyte in the cyclophane by π-π donor-acceptor interactions. Analysis of adrenaline is accomplished by the measurement of the source-drain current, I(sd), or by the gate-source voltage, V(gs). The sensing device is reusable (at least 100 cycles) and exhibits high stability.
AB - A film consisting of polyethyleneimine (PEI), Au nanoparticles (12 ± 1 nm) and coadsorbed cyclobis(paraquat-p-phenylene) (1) was assembled as a sensing interface on the Al23 insulating layer of an ion-sensitive field- effect transistor (ISFET). Adrenaline (2) was sensed by the functionalized ISFET with a detection limit of 1 x 10-6 M. The sensing ability of the nanostructured device for the analysis of adrenaline originates from the preconcentration of the analyte in the cyclophane by π-π donor-acceptor interactions. Analysis of adrenaline is accomplished by the measurement of the source-drain current, I(sd), or by the gate-source voltage, V(gs). The sensing device is reusable (at least 100 cycles) and exhibits high stability.
UR - http://www.scopus.com/inward/record.url?scp=0033485585&partnerID=8YFLogxK
U2 - 10.1021/ac990997s
DO - 10.1021/ac990997s
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C2 - 10596219
AN - SCOPUS:0033485585
SN - 0003-2700
VL - 71
SP - 5441
EP - 5443
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 23
ER -