Table 5. Solvent tests of PI filmsa.
| Monomer | MeOH | EtOH | Act | CHCl3 | CH2Cl2 | Tol | THF | Py | DMF | DMSO | NMP | DMAc | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (I) BPADA | BZ | × | × | × | × | × | × | × | △ | ◎ | ◎ | △ | ◎ |
| FDN | × | △ | ○ | △ | △ | ○ | △ | ◎ | ◎ | ◎ | ◎ | ◎ | |
| APS | × | △ | × | △ | × | × | × | ◎ | ◎ | ◎ | ◎ | ◎ | |
| AHP | × | △ | ○ | △ | △ | ○ | △ | ◎ | ◎ | ◎ | ◎ | ◎ | |
| (II) HBPDA | BZ | × | × | × | ○ | × | × | △ | ◎ | ◎ | ◎ | ◎ | ◎ |
| FDN | △ | △ | ○ | ○ | △ | ○ | ○ | ◎ | ◎ | ◎ | ◎ | ◎ | |
| APS | × | △ | △ | ○ | △ | × | △ | ◎ | ◎ | ◎ | ◎ | ◎ | |
| AHP | △ | △ | ○ | ○ | △ | ○ | △ | ◎ | ◎ | ◎ | ◎ | ◎ | |
◎: excellent, ○: good, △: poor,×: very poor. Act: acetone, Tol: toluene, THF: tetrahydrofuran, Py: pyridine, DMF: N,N′-dimethylformamide, DMSO: dimethyl sulfoxide, NMP: N-methyl-2-pyrrolidone, DMAc: N,N′-dimethylacetamide.