Fluorescence quantum yield of poly(3-octylthiophene) upon electrochemical doping

The in situ optical absorption and fluorescence of poly(3-octylthiophene) (POT) upon electrochemical doping were studied. Fluorescence from the undoped POT was observed in the acetonitrile electrolyte. It was quenched by the electrochemical doping. The effect of a dopant molecule on the intensity change of the fluorescence is 7.5 times greater than the one for the optical absorption. Thus, the fluorescence quantum yield decreased after electrochemical doping. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 3111–3115, 2006

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