Electrogenerated chemiluminescence phenomena

The existence of the inverted region accounts for the phenomenon of electrogenerated chemiluminescence (Chapter 18) and has also been seen by other means for several electron-transfer reactions in solution. 

The electrogenerated chemiluminescence (eel) is therefore specific of the triplet-triplet annihilation for A-type compounds. In such processes, the triplet formation, on which the eel phenomenon is based is in competition with the expected reactions already established for redox catalysis, namely homogeneous electron exchange reactions (SET and then disproportionation reactions) ... 

Chemiluminescence can also be produced by electrochemical oxidation or reduction (electrogenerated chemiluminescence). Ruthenium and osmium chelates show the ability to emit light when undergoing an electrochemical process. Based on this phenomenon, an electroluminescence immunoassay has been developed using a ruthenium(II) tris(bipyridyl) chelate as a label. 

Electrochemilutninescence (also called electrogenerated chemiluminescence and abbreviated ECU) is a light-emitting phenomenon whereby... 

There are some less widely studied types of inorganic photochemical systems. There is the phenomenon of photochromism, in which a system is driven one way by light and returns either thermally or photochemically. An example for us was the family of transition metal dithizonate complexes [51]. Photochemistry and calorimetry may be combined in photocalorimetry, to obtain enthalpies of reactions which are not clean or are not obtainable at all thermally [52], Similar information can be obtained from the photoacoustic effect [53]. Another interesting phenomenon is that of chemiluminescence, that is, the chemical production of an excited state reaction product, and the related process of electrogenerated chemiluminescence. This type of emission can be detected even when... 

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