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Baseline corrected and normalized infrared absorption spectra of SFNs, RA and RA-SFNs. Spectra are normalized to an absorbance of 1 at the maximum of the amide III band at 1229 cm−1. The RA spectrum is normalized to an absorbance of 1 at 1281 cm−1. All samples were measured as a dry film obtained from a 30% ethanol dispersion. Orange dots indicate the baseline points.
