Chemistry Reference
In-Depth Information
Chapter 3
Synthetic Post-modification of Porous
Organic Frameworks
Abstract
POFs are constructed by organic building units via polymerization
reactions. To satisfy the proposed requirements, original organic monomers could
be designed and prepared using the powerful synthetic strategy of organic chemis-
try. Therefore, special functional groups could be attached to the POF skeletons. In
this chapter, we introduce some typical and successful strategies that are utilized
for synthetic post-modification of POFs. One effective strategy is the rational use
of POFs containing active sites such as azide and alkyne for click chemistry, ion
exchange, metallization of -OH and -COOH. Another is using the phenyl ring
of POFs, which is a good precursor of the preparation of many functional groups
containing compounds.
Keywords
Post-modification
·
Reactive sites
·
Click reaction
·
Ion exchange
·
Metallization
·
Phenyl rings
·
Functional groups
3.1 Introduction
Nowadays, hundreds of POFs have been successfully designed and synthesized
[
1
]. The construction of POFs is based on the building units, also called mono-
mers. Monomers could be rationally designed and prepared to satisfy the proposed
requirements owing to synthetic features of organic chemistry (Fig.
3.1
). Therefore,
special functional groups could be attached to the building units. As a result, POFs
with reactive sites are obtained. To change the porosity of the resulting POF materi-
als, synthetic post-modification should be performed (Fig.
3.1
). In this chapter, we
introduce some typical and successful strategies.
