sensors inmicrofluidic chips suchas OLEDs [9–11] and OPDs [12,13]
for a decade. For instance, fluorescence sensors (e.g., dye concentration
detection [14], multi-analyte sensing [15], immuno-assay
[16]) with both an OLED and OPD in a microfluidic chip have been
published. The great potential of organic optoelectronic devices
for all these new applications has been summarized by Williams
et al. [17]. We have previously demonstrated that organic optoelectronic
devices could be used for cell sensing [18]. Here, we will as the fabrication of dye-based absorption filters for fluorescence
measurements will be described. Finally, an example of application
for phytoplankton fluorescence detection into a microfluidic chip
will be presented.
present a detailed study of OLED and OPD characteristics needed
for a fluorescence sensor.
At the same time, it will be shown that dye-based absorption
filters, originally developed by RJ Wallace for astronomical observations
[19] and then used for optical cameras as display filters
[20], can be suitable for fluorescence detection in a microfluidic
platform. In fact, they present all properties required for integration
of optical filters: low autofluorescence, high transmittance for
the desired wavelengths associated with a greater attenuation of
unwanted wavelengths and low manufacturing cost.
Here we will present the integration of a fluorescent sensor into
a microfluidic chip using organic optoelectronic components and
absorption filters. We will show how to modulate and enhance
organic optoelectronic device characteristics to be assembled into
a microfluidic platform. Two examples of OLEDs and OPDs as well