Enhanced Electrogenerated Chemiluminescence in Thermoresponsive Microgels

The electrochemistry, photoluminescence and electrogenerated chemiluminescence of thermoresponsive redox microgels were investigated. For the first time, reversible ECL enhancement is demonstrated in stimuli-responsive 100-nm microgel particles. Such an unexpected amplification reached 2 orders of m...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2013-04, Vol.135 (15), p.5517-5520
Main Authors: Pinaud, Florent, Russo, Lorenzo, Pinet, Sandra, Gosse, Isabelle, Ravaine, Valérie, Sojic, Neso
Format: Article
Language:English
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Summary:The electrochemistry, photoluminescence and electrogenerated chemiluminescence of thermoresponsive redox microgels were investigated. For the first time, reversible ECL enhancement is demonstrated in stimuli-responsive 100-nm microgel particles. Such an unexpected amplification reached 2 orders of magnitude, and it is intrinsically correlated with the collapse of the microgel particles. The swell–collapse transition decreases the average distance between adjacent redox sites and favors the electron-transfer processes in the microgels resulting in the enhanced ECL emission.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja401011j