Fig. 2

Synthesis and characterization of H-LPAEs via the linear oligomer combination branched strategy. (a) GPC traces of O-LPAE_B4−S4−ac during the polymerization process. (b) GPC traces of H-LPAE_{B4−S4−TMPTA−ac} during the polymerization process. (c) GPC traces of H-LPAEs different compositions. (d) and (e)¹ H NMR spectra of LPAE_B4−S4 and H-LPAE_{B4−S4−TMPTA} before (d) and after (e) end-capping and purification