ABSTRACT
As an exemplary proof-of-concept demonstration, rather nontraditional optoelectronic devices in analytical sciences were successfully used for oxygen determination. This chapter introduces the potential use of these color imaging devices as economic analytical instruments. It focuses on the sensing based on photoluminescence. The chapter focuses on luminescent materials showing peak excitation and emission wavelengths in the visible range. It summarizes how a color charge-coupled devices (CCD) camera and simple color analysis can serve as a reliable analytical instrument. In general, the CCD cameras, especially the cooled monochromatic ones, are highly sensitive and low-noise imaging devices compared to their complementary metal–oxide–semiconductor counterpart, enabling them more suitable for high-quality imaging in scientific research. Organic dyes are the most widely used reporters in fluorescence sensing because of their economical cost and easy modification of their structures that can diversify spectral properties. The green fluorescent protein is a naturally fluorescent protein that was first extracted from a jellyfish species called Aequorea victoria.
