Extended Data Fig. 2: Solute-correlated (SC) spectra of aqueous alcohol solutions in literature and from our measurement.
From: Water structure and electric fields at the interface of oil droplets
a, Raman-MCR SC spectra (solid curves) obtained from ~0.5 M aqueous methanol solutions at temperatures between 20 °C and 100 °C6. b, Raman-MCR SC spectra (solid curves) obtained from ~0.5 M aqueous solutions of deuterated ethanol at temperatures between 2 °C and 100 °C6. c, Raman spectra of pure water (dashed black curve) and 0.5 M aqueous 1-propanol (solid black curve) at 20 °C, as well as the resulting Raman-MCR SC spectrum (blue curve) of 1-propanol6. The inset shows an expanded view of the dangling OH bands obtained at various temperatures, each normalized by dividing the SC spectrum by the corresponding CH band area. d, Raman-MCR decomposition for 1 M tert-butyl alcohol (TBA) at 20 °C50. e-h, SC spectra measured from our instrument of (e) 0.5 M methanol, (f) 0.5 M ethanol, (g) 0.5 M 2-propanol, (h) 0.5 M t-butanol.
