Extended Data Fig. 1: Swelling kinetics of PUF.

In the absence of TBD, the PUF reaches swelling equilibria at 25 °C and 120 °C, which proves that it does not dissolve in DMF.

In the absence of TBD, the PUF reaches swelling equilibria at 25 °C and 120 °C, which proves that it does not dissolve in DMF.