Chemistry Reference
In-Depth Information
6.2 Light-Harvesting
Conjugated microporous polymers (CMPs) have attracted much attention as they are
able to elaborate integration of
π
-electronic components to the conjugated frame-
work system and remain permanent porous structures at the same time [
3
-
5
]. Thus
the energy donating CMPs with highly dense
π
-electronic components could be
employed as antennae for the collection of photons. Additionally, energy-accepting
counterparts could be spatially confined by the inherent pores of CMPs. Therefore,
an unprecedented donor-acceptor system could be created for energy transduction
mediated by CMP networks.
In 2010 Jiang et al. described the synthesis of light-harvesting CMP with rapid
and highly efficient flow of light energy [
6
]. The polyphenylene-based CMP
(PP-CMP) was synthesized through Suzuki coupling reaction (Fig.
6.1
a). In
comparison with the linear polyphenylene, PP-CMP is an inherent porous struc-
ture which consists of conjugated three-dimensional polyphenylene scaffolds. It
possesses large surface area which is up to 1,083 m
2
g
−
1
. It is a blue photolu-
minescence emitting compound, which is capable of excitation energy migration
over the framework. Interestingly, the porous structure of PP-CMP results in a
Fig. 6.1 a
Structure
representation of PP-CMP
and coumarin 6 and
b
schematic representation
of energy funneling from
PP-CMP to spatially confined
coumarin 6. Reprinted with
permission from Ref. [
6
].
Copyright 2010, American
Chemical Society
