Fig. 4: Characterization of monomer 1 and polymer 2.
From: Gram-scale selective telomerization of isoprene and CO2 toward 100% renewable materials
a 1H NMR spectrum of lactone 1 (500 MHz, CDCl3). b 1H NMR spectrum of 2 (500 MHz, CDCl3). c FTIR spectrum of 2. d SEC trace of 2. e Possible polymer structures.
