Figure 39.
Synthetic route of shape-memory polyurethanes (SMPU) containing coumarin moieties. Reprinted from [202], Copyright (2019), with permission from Elsevier.
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.