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Fluorescence image of Heck reactions run on poly-4-bromostyrene-block-cinnamoyloxyethyl methacrylate. The reactions were run by cycling selected electrodes on at −2.4 V for 0.5 s and then off for 0.1 s. Lower left: reaction run time = 3 min (300 cycles). Lower right: reaction run time = 6 min (600 cycles). Upper middle: reaction run time = 9 min (900 cycles). Middle: reaction run time = 18 min (1800 cycles).
