Enhanced Electrogenerated Chemiluminescence in Thermoresponsive
Microgels
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Abstract
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