Chemistry Reference
In-Depth Information
O
Cl
N
N
O
O
O
O
m
n
O
N
N
-vinyl carbazole).
Polyacetylene derivatives exhibit unique characteristics such as semiconductivity, high gas per-
meability, helix inversion, and nonlinear optical properties [
253
]. Attempts were made, therefore, to
incorporate carbazole into polyacetylene in hope of attaining enhance properties [
253
].
These dyes were then shown to sensitize photo-conductivity of poly(
N
n
N
N
It was found [
122
] that the current conducted by this polymer during irradiation is 40-50 times
higher than it is in the dark. On the other hand, the electron mobility of the di-
-butylcarbazolepo-
lyacetylene (shown above) is lower than in poly(vinyl carbazole). This was attributed to the bulkiness
of the butyl groups [
254
].
Siloxanes with pendant carbazole groups were synthesized by Strohriegl [
254
] by the following
technique:
t
Si
Si
O
x+2
x
O
N
N
The material, however, did not turn out to be photoconductive. The photo-conductivity of
copolymers was also investigated. Copolyacrylates with pendant donor and acceptor chromophores,
