Electrogenerated chemiluminescence.
In electrogenerated chemiluminescence, also known as electrochemiluminescence (ECL), electrochemically generated intermediates undergo a highly exergonic reaction to produce an electronically excited state that then emits light. These electron-transfer reactions are sufficiently exergonic to allow the excited states of luminophores, including polycyclic aromatic hydrocarbons and metal complexes, to be created without photoexcitation. For example, oxidation of [Ru(bpy)(3)](2+) in the presence of tripropylamine results in light emission that is analogous to the emission produced by photoexcitation. This review highlights some of the most exciting recent developments in this field, including novel ECL-generating transition metal complexes, especially ruthenium and osmium polypyridine systems; ECL-generating monolayers and thin films; the use of nanomaterials; and analytical, especially clinical, applications.
Forster
Robert J
RJ
Biomedical Diagnostics Institute, National Center for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland. Robert.Forster@dcu.ie
Bertoncello
Paolo
P
Keyes
Tia E
TE
D056831:Coordination Complexes / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods*; D049449:Luminescence; D049329:Nanostructures / Q000737:chemistry; D017892:Osmium Compounds / Q000737:chemistry; D017975:Ruthenium Compounds / Q000737:chemistry
D056831:Coordination Complexes; D017892:Osmium Compounds; D017975:Ruthenium Compounds