Fig.3

Fig.3

Fig. 3 1H NMR spectra of humulene (bottom), polyhumulene (center) and poly (hydrohumulene) (top). Insets: details of the range between 5.7 and 4.8 ppm. Spectra recorded at 400 MHz in CDCl3 (C2D2Cl4 and 120 °C for poly (hydrohumulene)).