Fig. 3: Reversible switching of PBTTT nanoantennas.
From: Doped semiconducting polymer nanoantennas for tunable organic plasmonics
a Flourine and b Carbon XPS spectra of PBTTT films after doping, after acetonitrile de-doping, and 120 °C temperature de-doping. The doping levels can be estimated by the F/C atomic composition ratio as summarized in Table S2. The intensities are normalized based on the intensity of the carbon signal. c, d Measured extinction for a thin PBTTT film on glass for (c) acetonitrile de-doping and d 120 °C temperature de-doping. e, f Measured extinction for PBTTT nanodisks on glass (thickness = 95 nm, diameter = 394 nm) for e acetonitrile de-doping and f 120 °C temperature de-doping.
