
November 11, 2014 15:52 PSP Book - 9in x 6in 11-Serge-Cosnier-c11
314 Transduction of Biochemical Reactions by Use of Quantum Dots
Figure 11.4 Spatially resolved readout of a sensor surface with different
biochemical systems immobilized by illumination of the respective elec-
trode area.
but also by the presence of substances that can act as electron
donors or acceptors. This means, under fixed potential conditions
concentration analysis is possible by photocurrent measurements.
Such a reaction scheme is illustrated in Fig. 11.2.
In comparison to an unmodified electrode the QD electrode
provides an additional tool to regulate a certain kind of reaction— ...