
9: TRIAZOLE POLYMERS 223
Table 9.2 Monomer Reactivity Ratios of 1-Vinyl-1,2,4-triazole (1)
with Various Comonomers (2) in DMF [10,6]
Monomer (2) r
1
r
2
2-Hydroxyethyl methacrylate 0.09 2.40
Methyl methacr ylate 0.62 1.48
2,2,3,3-Tetrafluoropropyl methacrylate 0.23 1.77
2,2,3,3,4,4,5,5-Octafluoropropyl methacrylate 0.25 2.42
CH O
3
N
N
N
O
O
POCl
3
CH O
3
N
N
N
Cl
Cl
NCOCH O
3
NH2NH2COOEt
Figure 9.4 Synthesis of 3,5-dichloro-4-(4-methoxy-
phenyl)-4H-1,2,4-triazole [11].
this class is used in the construction of organic light-
emitting devices either as such or pendant on poly-
mers. The major advantage of dendrimers over analo-
gous heterocyclic polymers is that their electronic ...