Figure 4.
1H-NMR spectra of di-PPG chain extended samples UP2-DI-0.34, UP2-DI-0.54, UP2-DI-0.74 and UP2-DI-0.94 at a chemical shift range from 4.9 to 5.1 ppm.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.