Absorption phosphorescence devices

Fiber-optic biosensors are analytical devices in which a fiber optic device serves as a transduction element. The usual aim of fiber-optic biosensors is to produce a signal proportional to the concentration of target analyte to which the biological element reacts. Fiber-optic biosensors are based on the transmission of light along silica glass fiber, or POF to the site of analysis. They can be used in combination with different types of spectroscopic technique, e.g. absorption, fluorescence, phosphorescence, or surface plasmon resonance (SPR) (14). 

It is believed that the molecules of these metalated complexes are totally planar. This allows a better 7t-conjugation across the main chain. The ligands are strongly fluorescent but may become phosphorescent when the platinum atom is introduced in the backbone. These optical properties are tracked back to Ttn transitions by a two-photon absorption. The potential for the use of such metallopolymers for electrophospho-rescent polymer light-emitting devices has been discussed [75]. 

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