Chemistry Reference
In-Depth Information
In the ionothermal synthesis of triazine-based porous polymers, the ratio of
catalyst to monomer affects the polymerization degree significantly, giving rise
to a series of networks with different pore volumes, surface areas, and pore size
distributions. For example, the porous triazine network PAF-16 was synthesized
from a mixture of tetrakis(4-cyanophenyl)silica and anhydrous ZnCl
2
with differ-
ent proportions at 400 °C [
41
]. The use of 1-equivalent ZnCl
2
leads to the for-
mation of a polymer with a surface area of 190 m
2
g
−
1
, which increases to 979
and 1,900 m
2
g
−
1
when a 5-equivalent catalyst and 10-equivalent catalyst are
employed. Additionally, in the ionothermal synthesis of triazine-based porous
polymers, the reaction temperature also plays an important role in affecting the
porosity. For example, trimerization of 1,4-dicyanobenzene is performed at differ-
ent temperatures (400, 500, 600, and 700 °C), the BET surface area increases from
920 to 1,600, 1,750, and 2,530 m
2
g
−
1
, respectively [
8
].
As a basic synthetic method, the Suzuki coupling reaction was used for the pro-
duction of four polymeric frameworks (Fig.
2.23
), referred to as EOF-6, EOF-7,
Fig. 2.23
Syntheses of EOF-6 to EOF-9. Reprinted with permission from Ref. [
64
]. Copyright
2010, Royal Society of Chemistry
